subzero.com 800.222.7820 400 Service Manual General Information 2 Installation Information 10 Controls & Operation 30 Sealed System 136 Air Flow & Fan Blade Spacing 156 Component Access & Removal 164 Troubleshooting Guide 220 Technical Data 260 Wiring Diagrams 269 General Information Wine Storage (400- 2 ) Series INTRODUCTION This Technical Service Manual has been compiled to provide the most recent service information for 400-2 Series units. This information will enable the service technician to troubleshoot and diagnose malfunctions, perform neces- sary repairs, and return a unit to proper operational condition. The service technician should read the complete instructions contained in this manual before initiating any repairs on a 400-2 Series unit. IMPORTANT SAFETY INFORMATION TECHNICAL ASSISTANCE Below are Product Safety Labels used in this manual. If you should have any questions regarding a Sub-Zero The "Signal Words" used are WARNING or CAUTION. appliance and/or this manual, please contact: When reviewing this manual, please note these differ- ent Product Safety Labels placed at the beginning of Sub-Zero, Inc. certain sections of this manual. You must follow the ATTN: Service Department instructions given in the boxes of the Product Safety P.O. Box 44988 Labels in order to avoid personal injury and/or product Madison, WI 53744-4988 damage. Customer Assistance The sample Product Safety Labels below illustrate the Phone #: (800) 222 - 7820 precautions that should be taken when the signal word Facsimile #: (608) 441 - 5887 is observed. Technical Assistance (For Technicians in Customer’s Homes Only) INDICATES THAT HAZARDOUS OR UNSAFE PRAC- Phone #: (800) 919 - 8324 TICES COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH. Parts / Warranty Claims Phone #: (800) 404 - 7820 Facsimile #: (608) 441 - 5886 Indicates that hazardous or unsafe practices could Service Department e-mail Address: result in minor personal injury, and/or product dam- customerservice@subzero.com age, and/or property damage. Main Office Hours: In addition, please pay attention to the signal word 8:00 AM to 5:00 PM Central Time “NOTE”, which highlights information that is especially Monday through Friday important for the topic being covered. (24/7 Phone Coverage) This manual is designed to be used by Authorized Service Personnel only. Sub-Zero Freezer Co., Inc. assumes no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than Authorized Service Technicians. Information and images contained in this manual are the copyright property of Sub-Zero Freezer Company, Inc. Neither this manual nor any information or images contained herein may be copied or used in whole or in part without the express written consent of Sub-Zero Freezer Company, Inc. © Sub-Zero Freezer Company, Inc, all rights reserved. #3758410 - Revision C - May,2014 1-2 Wine Storage (400- 2 ) Series General Information WARRANTY INFORMATION Warranty Details This page summarizes the 2, 5 & 12 Year Warranty pro- * Includes, but is not limited to the following: vided with every 400-2 Series unit, as well as two spe- Electronic Control System Components, Fan & Light cial warranties: Switches, Fan Motors & Blades, Defrost & Drain • Non-Residential Warranty - Applies to units installed Heaters, Defrost Terminator, Drain Pan, Drain Tubes, in non-residential applications. Wiring, Light sockets & bulbs, Door hinges, Door • Display/Model Home Warranty - Applies to distribu- closers & Cams, Compressor Electricals, etc. . . tor or dealer display units, and units in model * Stainless Steel (Classic, Platinum & Carbon) doors, homes, sold three years after date of manufacture. panels and product frames are covered by a limited 60 Following the warranty summaries are details and notes day parts and labor warranty for cosmetic defects. about the warranties. ** Includes the following: TWO, FIVE & TWELVE YEAR Warranty Compressors, Condenser, Evaporators, Filter-Driers, • 2 year TOTAL PRODUCT, *parts and labor. Refrigerant Valve Assembly, Heat-exchangers, All NOTE: Stainless Steel (Classic, carBon & Platinum) Tubing that Carries the Freon. doors, panels & product frames are covered by a 60 NOTE: Condenser Fan Motors, Freon, Solder and day parts & labor warranty for cosmetic defects. compressor electricals are NOT considered sealed • 5 Year SEALED SYSTEM, **parts and labor. system parts. • 6th - 12th year LIMITED SEALED SYSTEM, **parts only. Warranty Notes • All warranties begin at unit's initial installation date. ONE & FIVE YEAR Non-Residential Warranty • All Warranty and Service information collected by Sub- (Example: Office, Yacht, etc.) Zero is arranged and stored under the unit serial num- • 1 Year TOTAL PRODUCT, *parts and labor. ber, and the customer's last name. NOTE: Stainless Steel (Classic, carBon & Platinum) Sub-Zero requests that you have the model and serial doors, panels & product frames are covered by a 60 number available whenever contacting the factory or day parts & labor warranty for cosmetic defects. parts distributor. • 5 Year SEALED SYSTEM, **parts only. • The serial number tag for models 427-2, 427R-2, and 430-2 is located on the bottom side of the compartment ONE & FIVE YEAR Display/Model Home Warranty divider, directly behind the control panel. (See Figures (Display units sold three years after date of manu- 1-1, 1-2) For model 424-2 it is on the upper compart- facture) ment ceiling (not shown). • 1 Year TOTAL PRODUCT, *parts and labor. NOTE: Stainless Steel (Classic, carBon & Platinum) doors, panels & product frames are covered by a 60 day parts & labor warranty for cosmetic defects. Control Panel Serial Tag Location • 5 Year SEALED SYSTEM, **parts only. Figure 1-1. Serial Tag Location Model Number Serial Number Manufacture Date LISTED HOUSEHOLD REFRIGERATOR OR FREEZER FREEZER CO., INC. MADISON, WI Jan 2005 MODEL SERIAL NUMBER 424G / O 2 2191621 REFRIGERATOR FREEZER WINE TOTAL AMPS REFRIGERANT 0.0 3.5 1.8 R134a PRODUCT SERVICE 1-800-222-7820 115Vac, 60Hz, 1 Phase Refrigerant Charge Total Amps Refrigerant Type Figure 1-2. Serial Tag Layout 1-5 #3758410 - Revision C - May,2014 General Information Wine Storage (400- 2 ) Series MODEL DESCRIPTIONS This section briefly describes the models covered in this 400-2 Series Technical Service Manual. There are four basic model configurations (Models 424-2, 427-2, 427R-2, and 430-2), with esthetic variations of the exterior cos- metic components. This manual will address the four basic configurations in most cases. The following diagrams (Figures 1-3 to 1-6) explain the 400-2 Series model numbering system. Figure 1-3. Model 424-2 424G/B-2 • 400 Series - 24” Wide - Glass/CarBon (or Black) Steel Wrapped Door 424HAG/B-2 • 400 Series - 24” Wide - High Altitude Glass/CarBon (or Black) Steel Wrapped Door 424G/O-2 • 400 Series - 24” Wide - Glass/Overlay Panel Application Door 424HAG/O-2 • 400 Series - 24” Wide - High Altitude Glass/Overlay Panel Application Door 424G/P-2 • 400 Series - 24” Wide - Glass/Platinum Steel Wrapped Door 424HAG/P-2 • 400 Series - 24” Wide - High Altitude Glass/Platinum Steel Wrapped Door 424G/S-2 • 400 Series - 24” Wide - Glass/Stainless Steel Wrapped Door 424HAG/S-2 • 400 Series - 24” Wide - High Altitude Glass/Stainless Steel Wrapped Door 424S/B-2 • 400 Series - 24” Wide - Solid/CarBon (or Black) Steel Wrapped Door 424S/O-2 • 400 Series - 24” Wide - Solid/Overlay Panel Application Door 424S/P-2 • 400 Series - 24” Wide - Solid/Platinum Steel Wrapped Door 424S/S-2 • 400 Series - 24” Wide - Solid/Stainless Steel Wrapped Door 424FS/G-2 • 400 Series - 24” Wide - Free Standing - Stainless Steel Wrapped Unit - Glass Door 424FS/HAG-2 • 400 Series - 24” Wide - Free Standing - Stainless Steel Wrapped Unit - High Altitude Glass Door 424FS/S-2 • 400 Series - 24” Wide - Free Standing - Stainless Steel Wrapped Unit - Solid Door NOTE: Door panels for this model sold Figure 1-4. Model 427-2 separately. 427G-2 • 400 Series - 27” Wide - Glass Door 427HAG-2 • 400 Series - 27” Wide - High Altitude Glass Door 427S-2 • 400 Series - 27” Wide - Solid Door #3758410 - Revision C - May,2014 1-6 Wine Storage (400- 2 ) Series General Information NOTE: Door panels for this model sold Figure 1-5. Model 427R-2 separately. 427RG-2 • 400 Series - 27” Wide - Refrigerated Drawers - Glass Door on Wine Storage Section 427RHAG-2 • 400 Series - 27” Wide - Refrigerated Drawers - High Altitude Glass Door on Wine Section 427RS-2 • 400 Series - 27” Wide - Refrigerated Drawers - Solid Door on Wine Storage Section Figure 1-6. Model 430-2 430G/B-2 • 400 Series - 30” Wide - Glass/CarBon (or Black) Steel Wrapped Door 430HAG/B-2 • 400 Series - 30” Wide - High Altitude Glass/CarBon (or Black) Steel Wrapped Door 430G/F-2 • 400 Series - 30” Wide - Glass/Framed Panel Application Door 430HAG/F-2 • 400 Series - 30” Wide - High Altitude Glass/Framed Panel Application Door 430G/O • 400 Series - 30” Wide - Glass/Overlay Panel Application Door 430HAG/O-2 • 400 Series - 30” Wide - High Altitude Glass/Overlay Panel Application Door 430G/P-2 • 400 Series - 30” Wide - Glass/Platinum Steel Wrapped Door 430HAG/P-2 • 400 Series - 30” Wide - High Altitude Glass/Platinum Steel Wrapped Door 430G/S-2 • 400 Series - 30” Wide - Glass/Stainless Steel Wrapped Door 430HAG/S-2 • 400 Series - 30” Wide - High Altitude Glass/Stainless Steel Wrapped Door 430S/B-2 • 400 Series - 30” Wide - Solid/CarBon (or Black) Steel Wrapped Door 430S/F-2 • 400 Series - 30” Wide - Solid/Framed Panel Application Door 430S/O-2 • 400 Series - 30” Wide - Solid/Overlay Panel Application Door 430S/P-2 • 400 Series - 30” Wide - Solid/Platinum Steel Wrapped Door 430S/S-2 • 400 Series - 30” Wide - Solid/Stainless Steel Wrapped Door 1-7 #3758410 - Revision C - May,2014 General Information Wine Storage (400- 2 ) Series Sub-Zero Wine Storage Temperature Range, Recommended Wine Storage Temperatures and Recommended Wine Serving Temperatures: The table below shows the temperature range of the Sub-Zero Wine Storage Units. This table also shows the rec- ommended temperatures for “serving” wines. Serving wines at the recommended temperatures will insure that white wines maintain their lively and interesting taste, and red wines will maintain their scent and flavor. NOTE: For “long term storage” of all wines, the ideal temperature is 55°F / 13°C. NOTE: The temperature range in the refrigerator drawer area of the 427R is 34°F / 1°C to 45°F / 7°C. Fahrenheit Celsius Wine Storage Unit Maximum Temperature 65° 18° Recommended Wine Serving Temperatures Bordeaux 63° 17° Red Burgundy 61° 16° Beaujolais 54° 12° Sherry 52° 11° Rosés 48° 9° Dry White Wines 48° 9° Champagne 46° 8° Sweet White Wines 43° 6° Sparkling Wines 41° 5° Wine Storage Unit Minimum Temperature 38° 3° #3758410 - Revision C - May,2014 1-8 Installation Information Wine Storage (400- 2 ) Series INSTALLATION CONSIDERATIONS This section covers common installation issues seen by Service Technicians. Improper installation, though not a valid service issue, has the potential to lead to a call for service. Installation related complaints could include, but are not limited to: Unit leveling, unit movement, door misalignment, improper door and drawer sealing, internal frost or condensation, exterior condensation, warm compartment temperatures, etc. NOTE: If additional installation information is needed, refer to the complete Installation Guide, or contact Sub-Zero Service Department. UNIT COULD TIP UNDER CERTAIN LOAD CONDITIONS. FAILURE TO INSTALL ANTI-TIP COMPONENTS AND EXTEND FRONT LEVELERS TO FLOOR ACCORDING TO INSTALLATION MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH. Anti-Tip Components Installation (424-2) If anti-tip bracket needs to be installed, follow these Bracket steps (See Figure 2-1): 1. Locate and mark two wall studs at back of unit installation location. 2. Identify and mark proper height to clear unit top. Space between unit top and bottom of bracket must NOT be more then 1/4" (6.1 mm) 3. Secure bracket to wall studs, located in step 1, mak- ing sure screws extend 7/8" (22.2 mm) into each wall stud. The bracket must extend a minimum of 3" (76.2 mm) over unit. 4. Refer to Installation Guide provided with unit for any additional information needed. Wall Stud Figure 2-1. Anti-Tip Components Anti-Tip Components Installation (424FS-2, 427-2, 427R-2) If anti-tip bracket needs to be installed, follow these steps (See Figure 2-2): 1. Center anti-tip bracket at back of unit installation location. 2. Secure bracket to wall studs or flooring, making sure screws extend 7/8" (22.2 mm) into each wall stud or flooring. 3. Refer to Installation Guide provided with unit for any additional information needed. Bracket Figure 2-2. Anti-Tip Components #3758410 - Revision C - May, 2014 2-2 Wine Storage (400- 2 ) Series Installation Information Anti-Tip Components Installation (430-2) Wall Stud If anti-tip components (aka wood block / blocking kit) need be installed, follow these steps (See Figure 2-3): Screws & L-Bracket 1. Locate and mark two wall studs at back of unit installation location. 2. Identify and mark proper height to clear unit top. k d Bloc Space between unit top and bottom of wood block Woo must NOT be more then 1/4" (6.1 mm). 3. Using the L-brackets and screws provided, secure wood block to wall studs, located in step 1, making sure screws extend 7/8" (22.2 mm) into each wall stud. The wood block must extend a minimum of 3" Min. (76.2 mm) over unit. 3” (76.2 4. Utilizing front and rear levelers, raise and level unit mm) until it contacts wood block (See leveling instructions on following pages). 5. Refer to Installation Guide provided with the unit for any additional information needed. Sub-Zero Unit Figure 2-3. Anti-Tip Components Unit Leveling (424-2, 424FS-2) NOTE: Model 424-2 must be leveled before installing into rough-in opening. If unit is already installed and Countertop Bracket anchored with countertop bracket (See Figure 2-4), Extract anchor screws before leveling, reinstalled after. To Level 424-2 - Place it in front of rough-in opening, then turn each leveling leg clockwise to raise unit, coun- terclockwise to lower unit (See Figure 2-5). To Level 424FS-2 - Turn each leveling leg clockwise to raise unit, counterclockwise to lower unit (See Figure 2-2). Figure 2-4. Countertop Bracket Leveling Legs (4) Clockwise to raise, Counterclockwise to lower Figure 2-5. Leveling Legs 2-3 #3758410 - Revision C - May, 2014 Installation Information Wine Storage (400- 2 ) Series Unit Leveling (427-2 & 427R-2) NOTE: Unit must be installed before final leveling. If unit is anchored to cabinets, remove anchor screws before leveling, reinstalled after (See Figure 2-6). Side Molding 1. Remove kickplate/grille (See Figure 2-7). 2. To raise front, turn front leveler legs counterclock- wise, clockwise to lower (See Figure 2-8). 3. At front of unit base is an adjusting screw that reach- Screw es to rear leveler assembly. To raise rear, use Phillips-head screwdriver to turn adjusting screw clockwise, counterclockwise to lower (See Figure 2- 9). Unit to Cabinet Bracket Figure 2-6. Molding & Brackets Rear leveling legs will move only 1/16” (2 mm) for every 18 revolutions of the Phillips-head adjusting screw. Do not over torque. Use lowest torque set- ting on any power screwdriver. Do not turn rear lev- eling legs by hand, doing so will damage rear level- er assembly. Kickplate/ Grille Figure 2-7. Kickplate/Grille Removal Figure 2-8. Adjusting Front Leveling Legs Rear Leveler Front Leveling Leg Adjusting Screw Rear Leveler Assy Figure 2-9. Adjusting Rear Levelers #3758410 - Revision C - May, 2014 2-4 Wine Storage (400- 2 ) Series Installation Information Unit Leveling (430-2) NOTE: Unit must be installed before final leveling. If unit is anchored to cabinets, remove anchor screws before leveling, reinstalled after (See Figure 2-10). 1. Remove kickplate (See Figure 2-11). 2. To raise front, turn front leveler legs counterclock- wise, clockwise to lower (See Figure 2-12). Screw 3. At front of unit base is an adjusting screw that reach- es to rear leveler/roller assembly. To raise unit rear, use 5/16” socket wrench to turn adjusting screw clockwise to raise, counterclockwise to lower (See Figure 2-13). NOTE: Level is best checked at top & side mainframe. Figure 2-10. Anchoring Screws Removal Screw (2) plate Kick Figure 2-11. Kickplate Removal Figure 2-12. Adjusting Front Leveling Legs Rear Leveler Adjusting Screw Front Leveling Leg Rear Leveler Assy Figure 2-13. Adjusting Rear Levelers 2-5 #3758410 - Revision C - May, 2014 Installation Information Wine Storage (400- 2 ) Series Door Adjustment (424-2, 424FS-2) NOTE: Unit must be level before adjusting door. NOTE: If 424FS-2 door needs adjusting, stainless steel 1. Remove 2. Slide wrap must be removed to adjust top cabinet hinge (See back brackets. wrap Figure 2-14). forward & lift up If unit is properly installed, blocked and leveled, it may still be necessary to adjust door left to right and/or in and out. Adjustments are performed at top and/or bot- tom cabinet hinge(s) (See Figure 2-15). 1. Working on only one hinge at a time (top or bottom), remove and discard two small Phillips head shipping screws from cabinet hinge before attempting adjust- ments. 2. Using a 1/8” Allen-wrench, loosen and “re-snug” cab- inet hinge screws, allowing door adjustment. 3. Adjust door as required. Figure 2-14. Wrap Removal 4. After adjusting door, tighten cabinet hinge screws and check for proper door seal. Cabinet Hinge Door and/or Drawer Adjustment (427-2 & 427R-2) NOTE: Door and/or drawers on models 427-2 & 427R- Remove shipping 2 are non-adjustable. Instead, door and/or drawer pan- screws. els must be adjusted if there is alignment problems. Loosen and re-snug Refer to Installation Manual. cabinet hinge screws. NOTE: Unit must be level before adjusting door and/or drawer panels. Door Adjustment (430-2) If unit is properly installed, blocked and leveled, it may still be necessary to adjust door left to right and/or in and out. Adjustments are performed at top and/or bot- tom door hinge(s) (See Figure 2-16). Figure 2-15. Door / Top Cabinet Hinge Adjustment 1. Working on only one hinge at a time (top or bottom), remove and discard two small Phillips head shipping screws from door hinge before attempting adjust- ments. 2. Using a 1/8” Allen-wrench, loosen and “re-snug” door hinge screws, allowing door adjustment. 3. Adjust door as required. Top 4. After adjusting door, tighten door hinge screws and Door Hinge Shipping Screws check for proper door seal. Door Hinge Screws Figure 2-16. Door / Top Door Hinge Adjustment #3758410 - Revision C - May, 2014 2-6 Wine Storage (400- 2 ) Series Installation Information Door Stop Adjustment (427-2 & 427R-2) Models 427-2 and 427R-2 have a 90° door stop cam built into the hinge system. The 90° door stop cam is located in the center portion of the hinge. To adjust the stop, use a standard straight-blade screw- driver to rotate cam until stop point is reached. (See Figure 2-17) NOTE: Door stop adjustment must be performed at 90° Stop Cam both bottom and top hinges. Door Stop Installation (430-2) For the model 430, optional 90° and 105° door stops are available, free of charge from Parts Distributors and/or Product Distributors. The part number for the 90° stop is #DS90, and the part number for the 105° stop is #DS105. To install a door stop, the door must be closed, then Figure 2-17. Door Stop Adjustment (See Figure 2-18): 1. Slide door stop cam up onto bottom hinge pin. Hinge Pin 2. Position stub on door stop into hole in cabinet hinge. 3. Retain door stop by pushing E-Ring into groove at end of bottom hinge pin, making sure E-ring is clipped securely into groove. E-Ring Door Stop Figure 2-18. Door Stop Installation 2-7 #3758410 - Revision C - May, 2014 Installation Information Wine Storage (400- 2 ) Series Door Panel Removal and Installation (All Models) Hinge Pin METAL DOOR PANELS MAY HAVE SHARP EDGES. PROTECTIVE GLOVES SHOULD BE WORN WHEN Door Closer HANDLING PANELS. DOOR PANELS MAY BE HEAVY OR UNSTABLE. IF THEY WERE TO FALL, THEY COULD CAUSE SERI- OUS PERSONAL INJURY. Classic, carBon and Platinum Stainless Steel Door Panel Removal and Installation (424-2) To remove a 424-2 SS door panel, the door must first Figure 2-19. Door Closer Removal be removed from the unit. To Remove the Door: Door Frame Door Gasket 1. Remove mounting screws securing door closer to the unit base (See Figure 2-19) 2. Slide door closer down off of bottom door hinge pin Poly Tape NOTE: It may be necessary to lean unit back slightly to create enough clearance between hinge pin and floor. 3. Open door and extract screws from top door hinge. 4. Lean door away from unit slightly and lift door out of bottom cabinet hinge. Figure 2-20. Poly Tape Removal To Remove a Stainless Steel Panel: 1. Lay door down and remove bottom door hinge and (Door Hinges & Handle switch depressor. (If lock and/or screws are pres- Screws - not shown) Door Assy Screws ent on bottom handle side, remove them also.) 2. Remove Poly-tape under gasket on handle side which covers handle mounting screw holes (See Figure 2-20). NOTE: Do not discard tape. It must be reapplied when panel is reinstalled. SS Panel 3. Extract handle mounting screws and pull handle from front of door (See Figure 2-21). SS Handle 4. Lift stainless steel panel from door. NOTE: To install stainless steel panel, reverse steps above. Poly Tape Figure 2-21. Stainless Steel Door Panel Removal #3758410 - Revision C - May, 2014 2-8 Wine Storage (400- 2 ) Series Installation Information Overlay Door Panel Removal and Installation (424-2) Door Frame Door Gasket Overlay panels are attached to the door using screws passing through the door frame from the rear, into the panel. The handle may also be attached through the Poly Tape door frame or just through the panel. To Remove an Overlay Panel: 1. Open door. 2. Remove Poly-tape under gasket which covers panel mounting screw holes (See Figure 2-22). NOTE: Do not discard tape. It must be reapplied Figure 2-22. Poly Tape Removal when panel is reinstalled. 3. Extract panel mounting screws, and possibly handle Overlay Panel Door Assy mounting screws. (See Figure 2-23) 4. Pull overlay panel from door. Poly NOTE: To install overlay panel, reverse steps above. Tape Panel Mounting Screws SS Handle Shown (Handle may vary) Figure 2-23. Overlay Door Panel Removal 2-9 #3758410 - Revision C - May, 2014 Installation Information Wine Storage (400- 2 ) Series Door Panel Removal and Installation Door Frame Door Gasket (427-2 & 427R-2) Models 427-2 and 427R-2 are NOT supplied with pan- els from the factory. Panels are purchased separately. Poly Tape Door panels are attached with screws passing from the rear through the door frame into the panel. The handle is attached to the panel. To remove a door panel: 1. Open door. 2. Remove Poly-tape under gasket which covers Figure 2-24. Poly Tape Removal panel mounting screw holes (See Figure 2-24). NOTE: Do not discard tape. It must be reapplied when panel is reinstalled. 3. Extract panel mounting screws. (See Figure 2-25) 4. Pull panel from door. NOTE: To install panel, reverse steps above. Drawer Panel Removal and Installation (427R-2) NOTE: Model 427R-2 is NOT supplied with panels from the factory. Panels are purchased separately. Drawer panels are attached using screws passing through mounting brackets at the bottom of each draw- er, and a dog-eared bracket on the back of the panel fit- ting into slots in the face of the drawers. Handles are attached to the panels. To remove a drawer panel (See Figure 2-26): Figure 2-25. Door Panel Removal 1. Open drawer. 2. Extract the six screws at bottom drawer panel bracket. Drawer Panel 3. Pull bottom of drawer panel out slightly while pulling Mounting Bracket downward. - Upper NOTE: To install panel, reverse steps above. Drawer Panel Mounting Bracket - Bottom Figure 2-26. Drawer Panel Removal #3758410 - Revision C - May, 2014 2-10 Wine Storage (400- 2 ) Series Installation Information Classic, carBon and Platinum Stainless Steel Door Panel Removal and Installation (430-2) Pry down To remove a 430-2 SS door panel, the door must first be removed from the unit. Remove To Remove the Door: E-Ring 1. Open door until hole in bottom cabinet hinge aligns with hole in door closer arm (See Figure 2-27). 2. Insert short screwdriver up into the two holes. Screwdriver up into holes NOTE: This screwdriver will be used to pry the door closer arm back onto the door hinge stud. 3. Use a small straight-blade screwdriver to remove E- Figure 2-27. Door Closer Disconnect ring which holds door closer arm to bottom door hinge stud. Door 4. Pry door closer arm down off of door hinge stud. Hinge door Lean from Door closer is spring loaded and may recoil quickly away d when detached. n unit a lift u p 5. Remove hinge-side door trim (See Figure 7-28a). 6. With a 1/8” Allen-wrench and Phillips screwdriver, Door extract all screws from top door hinge. 7. Lean door away from unit and lift off of bottom cabi- Trim net hinge (See Figure 7-28b). NOTE: When reinstalling door, use screwdriver in cabinet hinge hole and door closer arm hole to pry door closer arm back onto the door hinge stud. To Remove a Stainless Steel Panel: Figure 7-28a. Figure 7-28b. Trim/Hinge Removal Door Removal 1. Lay door down and remove bottom door hinge and switch depressor at top of door. (If lock and/or (Door Hinges & Door Assy Handle screws are present on top handle side, remove Screws - not shown) Screw them also.) l Pane 2. Remove panel mounting screws from hinge side of door. 3. Remove Poly-tape under gasket on handle side which covers handle mounting screw holes (See Figure 2-29). Handle NOTE: Do not discard tape. It must be reapplied when panel is reinstalled. 4. Extract handle mounting screws and pull handle from front of door. 5. Lift stainless steel panel from hinge side first, pivot- ing it off of handle side of door. NOTE: To install stainless steel panel, reverse steps above. Panel Spacer/ Washer Hinge-Side Panel Mounting Screw Handle Stand-off Figure 2-29. Stainless Steel Door Panel Removal 2-11 #3758410 - Revision C - May, 2014 Installation Information Wine Storage (400- 2 ) Series Framed & Overlay Door Panel Removal / Installation (430-2) Framed and overlay panels are attached to the door by sliding 1/4” (6 mm) thick edge of panel under door trim. On the handle side, there may also be additional screws passing through the door frame from rear into Magnetic the panel for increased support. Overlay handles may Trim Molding also be attached through the door frame, or just through the panel. To remove a framed or overlay panel, the handle, or trim on handle side must first be removed. Handles and/or handle-side trim is secured to the door with screws. The screw heads are then concealed by a magnetic trim strip. Piece of Tape To Remove Handle or Handle-side Trim (See Figure 7-30 & 7-31): 1. Press a sticky piece of tape to center of magnetic trim strip. 2. Pull tape so that trim strip bows away from door, disengaging both ends of trim strip from the end- caps. 3. With mounting screws exposed, extract the screws, Figure 2-30. Trim Molding Removal then pull handle (or handle-side trim) from door. To Remove Panel (See Figure 7-31): 1. Slide panel towards handle side, and out from under door trim. NOTE: If the panel will not slide from under door Handle or trim, panel mounting screws and/or handle mount- Handle-side ing screws may have been used. Trim a. Open door and remove Poly-tape from under gasket. b. Extract panel mounting screws, and/or handle mounting screws. c. Slide panel towards handle side, and out from Screws under door trim. Framed or Overlay Panel Figure 2-31. Framed and Overlay Handle / Handle Side Trim & Door Panel Removal #3758410 - Revision C - May, 2014 2-12 Electronic Control System Wine Storage (400- 2 ) Series WINE STORAGE ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS The electronic control system monitors, regulates and controls a variety of functions; it also displays temperatures, possible problems with the appliance and the temperature alarm bell status. The table below defines some basic electronic control terminology. An understanding of this information is needed in order to comprehend the operations and functions of the electronic control system. Term/Component Definition / Description Control Board …………………………..The printed-circuit board (PC Board) containing the microprocessor, relays and electrical connections for monitoring and controlling functions and opera- tions of the unit. Microprocessor ……………………...... An electrical component on the control board which receives electrical signals from other components, processes that information, then sends an electrical signal to the relays on the board to open or close, and other electronic com- ponents in the unit to switch on or off. Relay …………………………………… Electrical components on the control board which switch other components in the unit ON and OFF when instructed to do so by the microprocessor. LED (Light Emitting Diode) ………...... A small electronic “tube” that lights-up when power is supplied to it. In the control panel assembly, LED’s are arranged to show values (numbers). LED’s are also used as back-lighting for the indicators in the control panel. Control Panel Assembly ……………… The information input and read-out area of the electronic control system, located between the two wine storage compartments. NOTE: The model 427R-2 also has a control panel assembly at top front of the top refrigerator drawer assembly. Membrane Switch …………...……….. An integral part of the control panel assembly, which consists of the function keys used for all input functions to the electronic control system. Keys (Function Keys) ………………… The buttons on the Membrane switch used for input functions. (The keys are: UNIT ON/OFF, LIGHTS ON/OFF, ALARM ON/OFF, COLDER, WARMER) Indicators ………………….....………... The words and numbers that are displayed at the control panel. (Example: Temperature displays, temperature alarm bell, “SERVICE”, and error codes.) Set-Point ……………………………….. The desired compartment temperature, established by pressing the COLDER or WARMER keys. High Offset (Cut-in)………………….....During normal operation of a wine storage unit, it is the maximum evaporator temperature the electronic control system will allow before calling for cooling. Low Offset (Cut-out)…………………... During normal operation of a wine storage unit, it is the minimum compart- ment air temperature the electronic control system will allow before interrupt- ing cooling. Offset Temperature Range …………... The difference between the low offset and the high offset. Thermistor (Temperature Sensor) ….. A resistor with which resistance changes as temperatures around it change. For electronic control system purposes, the microprocessor measures this resistance and displays it as a temperature reading at the control panel. Display Units of Measure……………...Temperatures displayed at the control panel may be in fahrenheit (°F), or cel- sius (°C), units of measure. Switching from one to the other display units of measure is accomplished through a series of key strokes. Error Codes .…………………………... The code numbers accompanied by the letters “EC” that appear in the control panel display windows during diagnostic mode if the unit experienced specific problems related to electrical signals supplied by electrical components. Electrical “Pulse”.................................. A non-constant supply of voltage, or electrical signal, the duration of which is often measured in milliseconds. Electrical Polarity..................................The positive ( + ) and negative ( - ) sides of the alternating current sinewave. #3758410 - Revision C - May, 2014 3-2 Wine Storage (400- 2 ) Series Electronic Control System BASIC WINE STORAGE ELECTRONIC CONTROL SYSTEM This page contains a basic illustration of the 400-2 Series electronic control system (See Figure 3-1). Input opera- tions are performed at the membrane switch (part of the control panel assembly), with monitoring, regulating and controlling functions taking place at the control board (located directly behind the control panel). Temperatures and possible problems with the unit are displayed at the control panel display. The entire electronic control system is described in greater detail on the following pages. NOTE: The diagram below is not an exact electrical representation of the electronic control system. For more detailed electrical diagrams refer to the wiring diagram and schematic supplied with the unit. BELL ON LIGHTS UNIT WINE STORAGE COLDER WARMER COLDER WARMER ON/OFF ON/OFF ON/OFF SERVICE N.C. N.O. N.O. Figure 3-1. Basic Wine Storage (400-2) Series Electronic Control System 3-3 #3758410 - Revision C - May, 2014 J8 WINE BOARD CONTROL board must be replaced. J1 #3758410 - Revision C - May, 2014 J3 J2 2 1 14 8 1 E3 E1 E2 LAYOUT AND SUMMARY TABLE Electronic Control System WINE STORAGE CONTROL BOARD Figure 3-2. Control Board Layout copy of a summary table. (See Figures 3-2 and 3-3) 3-4 are labeled Alphanumerically. These labels correspond with the ponents are connected at which connection points on the control The electrical connection points on the wine storage control board problems with the control board are identified, the complete control gram. By referencing the table, it is possible to identify which com- alphanumeric control board summary layout table on the wiring dia- board. Below is a layout diagram of the control board, followed by a NOTE: All components on the control board are non-replaceable. If Wine Storage 400 SERIES CONTROL BOARD SUMMARY/ LAYOUT 120 VOLT CIRCUITS LOW VOLTAGE CIRCUITS (400- 2 ) CIRCUIT DESCRIPTION FUNCTION COLOR CIRCUIT DESCRIPTION FUNCTION COLOR E1 POWER IN POWER INTO BOARD BLACK J3 E2 COMPRESSOR POWERS COMPRESSOR GRAY P5 ALARM CIRCUIT-COMMON FOR HOME ALARMS GRAY/WHT E3 LIGHTS POWERS LIGHTS BROWN P4 ALARM CIRCUIT-NORMALLY CLOSED FOR HOME ALARMS WHT/BLUE P3 ALARM CIRCUIT-NORMALLY OPEN FOR HOME ALARMS WHT/RED J3 P2 EMPTY P14 GROUND EARTH GROUND GREEN/YELLOW P1 REFRIGERANT VALVE CONTROL REF TAN P13 EMPTY P12 NEUTRAL NEUTRAL INTO BOARD WHITE J2 THERMISTER CIRCUITS Series P11 EMPTY P1 LOWER CABINET SENSES TEMPERATURE BLUE/WHITE P10 UPPER EVAP. FAN COOLS UPPER COMPARTMENT PINK P2 LOWER CABINET SENSES TEMPERATURE BLUE/WHITE P9 LIGHTS OVERRIDE ON WHEN LIGHTS ON 100% ORANGE P3 UPPER CABINET SENSES TEMPERATURE BLUE/BLACK P8 LOWER EVAP. FAN COOLS LOWER COMPARTMENT BLUE P4 UPPER CABINET SENSES TEMPERATURE BLUE/BLACK P7 EMPTY P5 LOWER EVAPORATOR SENSES TEMPERATURE BLUE/RED P6 EMPTY P6 LOWER EVAPORATOR SENSES TEMPERATURE ORANGE/RED P7 UPPER EVAPORATOR SENSES TEMPERATURE BLUE/YELLOW P8 UPPER EVAPORATOR SENSES TEMPERATURE ORANGE/YELL Figure 3-3. Control Board Summary Table Wine Storage (400- 2 ) Series Electronic Control System WINE STORAGE CONTROL PANEL LAYOUT Upper Compartment COLDER WARMER key key BELL ON Alarm Bell & Upper UNIT SERVICE Compartment ON/OFF ON/OFF key indicators Temp Reading key Lower LIGHTS Compartment ON/OFF Temp Reading key COLDER WARMER key key Lower Compartment Figure 3-4. Wine Storage Control Panel Layout BASIC WINE STORAGE INPUT OPERATIONS The following pages describe basic input operations performed at the control panel. The subjects covered are: switching unit ON / OFF; adjusting set-point (temperature adjustment); switching lighting system ON / OFF, and enabling and disabling temperature alarm feature. Please note that though possible to display temperatures in Fahrenheit or Celsius, in most cases Fahrenheit readings are shown. Unit ON/OFF 400-2 Series units are shipped in the Off Mode. By pressing and releasing the UNIT ON/OFF key, power is allowed past the control board to the rest of the unit (See Figure 3-5). WHEN IN OFF MODE, 115 VOLTS AC IS STILL PRESENT AT CONTROL BOARD. Figure 3-5. Unit ON/OFF, Press UNIT ON/OFF Key 3-5 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Adjusting Set-Points (Temperature Adjustments) To adjust set-points, press WARMER or COLDER key on control panel in multiple key strokes until desired set-point is achieved (See Figure 3-6). One key stroke equals one degree (1°) change. NOTE: To check set point, press either the WARMER or COLDER key, keeping in mind that the initial key stroke will change the previous set-point by a one degree increment or decrement depending on key stroke choice. NOTE: The set-point will be displayed for ten (10) seconds after the last key stroke. After the 10 second delay, the compartment temperature will be displayed. As the compartment temperature changes, the temperature displayed on the LCD will change by no more than one degree per minute. NOTE: The temperature range in a wine storage compartment is 38°F / 3°C to 65°F / 18°C. Adjusting lower compartment set-point “colder” Figure 3-6. Adjust Set-Point, Press COLDER or WARMER Keys Lighting System ON/OFF For the purpose of displaying a wine supply, it is possible to energize the lights 100% of the time, even if the door is closed. To do so, press and release the LIGHTS ON/OFF key (See Figures 3-7). To disable this feature, press and release the LIGHTS ON/OFF key again. Figure 3-7. Light System ON/OFF, Press LIGHTS ON/OFF Key Alarm “BELL” ON/OFF (Temperature Alarm) There is an audio/visual temperature alarm that can be enabled to warn a customer if excessive warm or cold tem- peratures are experienced. To enable the alarm, press and release the key with the bell on it (See Figure 3-8). If the alarm is enabled, the BELL ON indicator will illuminate. To disable this feature, press and release the key with the bell on it again, and the BELL ON indicator will de-energize. NOTE: If the alarm is enabled and there is a temperature problem, the BELL ON indicator will flash and the alarm will beep. The alarm feature can also be tied in with a home security alarm system. Figure 3-8. Alarm Bell ON/OFF, Press (Alarm Bell) Key #3758410 - Revision C - May, 2014 3-6 Wine Storage (400- 2 ) Series Electronic Control System UNIQUE WINE STORAGE INPUT OPERATIONS The following pages illustrate unique input operations performed at the control panel, namely: Temperature Units Selection Mode, Sabbath Mode and Showroom Mode. Temperature Units Selection Mode (Selecting Degrees Fahrenheit or Degrees Celsius Display) The electronic control is initially set to display temperature in Fahrenheit (°F) units of measure. Units of measure can be converted from °F to °C (Celsius), and/or back again. This operation is called Temperature Units Selection. NOTE: Temperature Units Selection must be performed within the first minute after switching the unit ON. To convert temperature units of measure from Fahrenheit (°F) to Celsius (°C) readings, press and hold the alarm bell key and the UNIT ON/OFF key simultaneously for five (5) seconds, then release the keys (See Figure 3-9). A tem- perature is now shown in the left display window, and the right display window indicates the units of measure as °F or °C. In this case, a temperature will be displayed in Celsius (°C) units of measure. (See Figure 3-10) To switch from Celsius to Fahrenheit, repeat the steps above within 1 minute of switching the unit on. NOTE: Temperature Units Selection Mode will end ten (10) seconds after the last key stroke. NOTE: Do not press and hold the UNIT ON/OFF key first, that will simply switch the unit OFF. Figure 3-9. Initiating Temperature Units Selection Mode: Press and Hold Alarm Bell Key and Unit ON/OFF Key Simultaneously for Five (5) Seconds Figure 3-10. Temperature Units Selection Mode Initiated, Celsius Units (°C) Displayed 3-7 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Sabbath Mode (Lights Off Mode) Sabbath Mode was incorporated into the electronic control system for the observance of certain religious days. Initiating Sabbath Mode disables the LEDs and lighting system. To initiate Sabbath Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-11), then press and hold the UNIT ON/OFF key for ten (10) seconds, until the LEDs and lights switch OFF (See Figure 3-12). To return to normal operation, press and release the UNIT ON/OFF key. NOTE: During Sabbath Mode, the evaporator fans may function when the door is open. NOTE: During Sabbath Mode, the LEDs are disabled and set-points cannot be changed. Figure 3-11. Switch Unit OFF First Hold for 10 Seconds Figure 3-12. Initiate Sabbath Mode, Press and Hold UNIT ON/OFF Key for 10 Seconds Showroom Mode Showroom Mode was incorporated into the electronic control system so the appliance could be displayed in a show- room setting. When in Showroom Mode, all cooling functions are disabled, but the lighting system remains active. To initiate Showroom Mode, the unit must first be switched OFF using the UNIT ON/OFF key (See Figure 3-13). Then press and hold the upper compartment WARMER and COLDER keys, and the UNIT ON/OFF key, then release all three keys (See Figure 3-14). The unit is now in Showroom Mode. This can be verified by checked for evaporator fan operation, and/or compressor operation. To return the unit to normal operation, repeat the steps above. NOTE: Always check set-points after returning unit to normal operation. Figure 3-13. Switch Unit OFF First Figure 3-14. Initiate Showroom Mode, Press Upper COLDER and WARMER Keys and UNIT ON/OFF Key, then Release #3758410 - Revision C - May, 2014 3-8 Wine Storage (400- 2 ) Series Electronic Control System FUNCTION OF THE WINE STORAGE ELECTRONIC CONTROL SYSTEM The following pages explain monitoring, regulating and controlling functions of the electronic control system. In most cases signal traces for the 424-2 wiring schematic are used to show current flow for functions being explained. TO AVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESSING AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER ELEC- TRICAL COMPONENTS. EVEN WHEN UNIT IS SWITCHED OFF, AC POWER IS STILL PRESENT AT THE CONTROL BOARD. Supply Power to the Lighting System When the unit is plugged in, a continuous 115 Volts AC is supplied to the lighting system, making it possible to ener- gize the lights 100% of the time, even if the door is closed. (See Lighting System ON/OFF). The lighting system can also be disabled for observance of certain religious days, (See Sabbath Mode). The illustration below shows normal operation, with 115 Volts AC supplied to the unit. (See Figure 3-15) ELECTRIC SHOCK HAZARD. 115 VOLTS AC IS STILL PRESENT AT THE CONTROL BOARD AND LIGHT SWITCH WHEN LIGHTS ARE DISABLED. L1 NEUT 115 VOLTS WHITE 60 CYCLES ORANGE LIGHTS N.C. BROWN ORANGE LIGHTS J1 1 UPPER M PINK PINK J8 J2 N.O. EVAPORATOR FAN MOTORS 8 LOWER M BLUE BLUE 1 N.O. 2 TAN AWECO REF VALVE WINE 680 Ω BLUE CONTROL J3 BOARD PINK NOTE: If display lighting is activated, power is sup- plied to lights, bypassing light switch 14 GREEN/YELLOW CONDENSER FAN MOTOR E2 M E1 E3 COMPRESSOR STARTING RELAY OVERLOAD PROTECTOR M BLACK GRAY COMPRESSOR WHITE Figure 3-15. Lighting System Signal Trace (Normal Operation) 3-9 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Display Average Compartment Temperatures The temperature signal from the thermistor in each compartment is monitored by the microprocessor, then displayed in the control panel display. The LED arrow closest to the appropriate display window indicates which compartment (upper or lower) the temperature is associated with. Though compartment air temperature fluctuates slightly, the “average” temperature is displayed (See Figure 3-16). NOTE: The temperature range in a wine storage compartment is 38°F / 3°C to 65°F / 18°C. NOTE: If a compartment temperature should ever exceed either the high offset or low offset (for example: when a door is left open), the temperature displayed at the control panel will change by 1° per minute. Upper Compartment Temp Reading Upper Compartment Arrow Lower Compartment Arrow Lower Compartment Temp Reading Figure 3-16. Temperature Display (Shown in Fahrenheit Units of Measure) #3758410 - Revision C - May, 2014 3-10 Wine Storage (400- 2 ) Series Electronic Control System Control Compressor, Condenser Fan, Dual Refrigerant Valve and Evaporator Fan Motors The control senses evaporator and compartment temperatures via thermistors; one on each evaporator, and one in each compartment. High Offset (Cut-in) is governed by the evaporator temperatures. Low Offset (Cut-out) is gov- erned by the compartment temperatures. High Offset and Low Offset are based on the set-point. If either evaporator calls for cooling (evaporator temperature at high offset), power is supplied to the compressor and condenser fan motor, cycling them ON. The corresponding evaporator fan relay supplies power to the appropriate evaporator fan switch, cycling the fan on. Then, two relays on the control board are used to control the dual refriger- ant valve. The relays are in series with one another. The first “pulse” relay controls the length of time the solenoid is energized (500ms / 30 pulses per 1/2 second). The second “sign” relay controls the negative polarity, or positive polarity of the pulse supplied to the valve’s solenoid (determined by which evaporator is calling for cooling, ( + ) = Upper Evaporator, ( - ) = Lower Evaporator). So, when an evaporator calls for cooling, the bead inside of the T-con- nection of the refrigerant valve is forced to one side or the other, depending on the polarity of the pulse, supplying refrigerant to the appropriate evaporator (See Figure 3-17). NOTE: If neither compartment is calling for cooling, the compressor and condenser fan are switched off. NOTE: Evaporator fans are switched off when the door is open and disabled if the unit is in Showroom Mode. NOTE: When in Sabbath Mode, evaporator thermistors still control energizing of the compressor and evaporator fans, except L1 NEUT there is a ran- 115 VOLTS WHITE 60 CYCLES dom fifteen LIGHTS 4. Energized ORANGE (15) to twenty- N.C. five (25) sec- LIGHTS BROWN ORANGE J1 1 ond delay UPPER M PINK PINK before power J8 J2 N.O. EVAPORATOR FAN MOTORS is supplied to 8 LOWER M BLUE BLUE components. 1 N.O. 2 TAN AWECO REF VALVE WINE 680 Ω BLUE CONTROL J3 BOARD PINK 5. 115VAC pulse, 14 (+ polarity) GREEN/YELLOW CONDENSER FAN MOTOR E2 M supplied to E1 E3 COMPRESSOR solenoid, STARTING RELAY valve opens OVERLOAD PROTECTOR M BLACK GRAY COMPRESSOR supplying WHITE refrigerant to upper evapo- LOW VOLTAGE 3. Energized rator THERMISTER 1 LOWER CABINET MEMBRANE SWITCH THERMISTER 2 UPPER CABINET 2. Temperature THERMISTER 3 above low LOWER EVAPORATOR J1 1 BLUE W/WHITE BLUE W/WHITE offset BLUE W/BLACK BLUE W/BLACK J8 J2 BLUE W/RED THERMISTER 4 ORANGE W/RED BLUE W/YELLOW UPPER EVAPORATOR ORANGE W/YELLOW 8 1 DISPLAY 2 WHITE W/RED WHITE W/BLUE GRAY W/WHITE 1. Temperature at WINE CONTROL J3 high offset, BOARD Calling for 14 cooling E2 E1 E3 Figure 3-17. Cooling Signal Trace (Upper Evaporator at High-Offset Temperature, Calling for Cooling) 3-11 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Monitor and Control Off-cycle Defrost Since High Offset (Cut-in) is governed by the evaporator temperature, the refrigeration system cannot be energized until evaporator temperatures exceed 39°F / 4°C, with a 38°F/3°C set-point, and/or exceed 66°F / 19°C, with a 65°F/18°C set-point. L1 NEUT 115 VOLTS WHITE 60 CYCLES ORANGE LIGHTS N.C. BROWN ORANGE LIGHTS J1 1 UPPER M PINK PINK J8 J2 N.O. EVAPORATOR FAN MOTORS 8 LOWER M BLUE BLUE 1 N.O. 2 TAN AWECO REF VALVE WINE 680 Ω BLUE CONTROL J3 BOARD PINK Refrigeration system not energized; evaporators defrost 14 GREEN/YELLOW CONDENSER FAN MOTOR E2 M E1 E3 COMPRESSOR STARTING RELAY OVERLOAD PROTECTOR M BLACK GRAY COMPRESSOR WHITE LOW VOLTAGE THERMISTER 1 LOWER CABINET MEMBRANE SWITCH THERMISTER 2 UPPER CABINET THERMISTER 3 LOWER EVAPORATOR J1 1 BLUE W/WHITE BLUE W/WHITE BLUE W/BLACK BLUE W/BLACK J8 J2 BLUE W/RED THERMISTER 4 ORANGE W/RED BLUE W/YELLOW UPPER EVAPORATOR ORANGE W/YELLOW 8 1 DISPLAY 2 WHITE W/RED WHITE W/BLUE GRAY W/WHITE WINE J3 No cooling called for CONTROL BOARD 14 E2 E1 E3 Figure 3-18. Off-cycle Defrost Signal Trace #3758410 - Revision C - May, 2014 3-12 Wine Storage (400- 2 ) Series Electronic Control System POSSIBLE WINE STORAGE ERROR INDICATORS All wine storage units are equipped with an audio-visual temperature alarm feature, as well as low voltage wiring provisions to allow the alarm to be tied into a home security alarm system. This section explains the temperature alarm feature and the audio and/or visual error indicators that may alert a customer of a malfunction. NOTE: If the temperature alarm feature is tied into a home security system, the connections are made using the security system’s logic. If problems occur between the wine storage unit and the security system, then a home security system technician should be contacted. Warm Temperature Alarm A warm temperature alarm can occur if either wine storage compartment remains warm for too long, causing several consecutive maximum run-time cycles. During a warm temperature alarm, warm temperature readings may be dis- played at the control panel, the SERVICE indicator will flash (See Figure 3-19). A warm temperature alarm also cuts power to the compressor and fans, and logs error code “10” or “12” and possibly “15” (covered later in this section), depending on the compartment experiencing the warm temperature alarm. If the temperature alarm feature has been enabled by pressing the bell key on the control panel, the BELL ON indicator will also flash, and the audible alarm will beep. (See Figure 3-20) NOTE: To clear the warm temperature alarm, the problem must be corrected, then press the UNIT ON/OFF key to switch the unit Off, then press it again to switch the unit back ON. (See Figure 3-21) Also see Clearing Error Codes, later in this section. Figure 3-19. Warm Temperature Alarm, “SERVICE” Flashing BEEP! BEEP! BEEP ! Figure 3-20. Warm Temperature Alarm with BELL ON Feature Enabled: “SERVICE” and “BELL ON” Flashing with Audible Alarm Beeping Figure 3-21. Clear Warm Temperature Alarm, Press UNIT ON/OFF Key to Off, Then ON (Also see Clearing Error Codes, later in this section.) 3-13 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Cold Temperature Alarm A cold temperature alarm can occur if either wine storage compartment remains below 38°F / 3°C for too long, caus- ing several consecutive maximum run-time cycles. During a cold temperature alarm, cold temperature readings may be displayed at the control panel, the SERVICE indicator will flash (See Figure 3-22). A cold temperature alarm also cuts power to the compressor and fans, and logs error code “11” or “13” (covered later in this section), depending on the compartment experiencing the cold temperature alarm. If the temperature alarm feature has been enabled by pressing the bell key on the control panel, the BELL ON indicator will also flash, and the audible alarm will beep. (See Figure 3-23) NOTE: To clear the cold temperature alarm, the problem must be corrected, then press the UNIT ON/OFF key to switch the unit Off, then press it again to switch the unit back ON. (See Figure 3-24) Also see Clearing Error Codes, later in this section. Figure 3-22. Cold Temperature Alarm, “SERVICE” Flashing BEEP! BEEP! BEEP ! Figure 3-23. Cold Temperature Alarm with BELL ON Feature Enabled, “SERVICE” and “BELL ON” Flashing with Audible Alarm Beeping Figure 3-24. Clear Cold Temperature Alarm, Press UNIT ON/OFF Key to Off, Then ON (Also see Clearing Error Codes, later in this section.) #3758410 - Revision C - May, 2014 3-14 Wine Storage (400- 2 ) Series Electronic Control System Thermistor Malfunction Error Indicators The diagrams below illustrating what a customer may see on the display if there is a thermistor fault, such as a short or open condition. (See Figures 3-25, 3-26, 3-27) A thermistor fault will cause power to the compressor and fans to be cut, and error codes to be logged (covered later in this section). If the temperature alarm feature has been enabled by pressing the bell key on the control panel, the BELL ON indicator will also flash, and the audible alarm will beep. NOTE: Correcting/repairing the thermistor problem will clear the Thermistor Malfunction Error Indicator. Figure 3-25. EE” at Right and “SERVICE” Flashing = Upper Compartment Thermistor (or its Wiring) Fault (NOTE: Alarm will Beep and BELL ON will also Flash if Alarm is Enabled) Figure 3-26. EE” at Left and “SERVICE” Flashing = Lower Compartment Thermistor (or its Wiring) Fault (NOTE: Alarm will Beep and BELL ON will also Flash if Alarm is Enabled) Figure 3-27. “SERVICE” Alone Flashing = An Evaporator Thermistor (or its Wiring) Fault (NOTE: Alarm will Beep and BELL ON will also Flash if Alarm is Enabled) 3-15 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series WINE STORAGE TROUBLESHOOTING INPUT OPERATIONS The following few pages explain troubleshooting input operations performed at the control panel, namely: Diagnostic Mode, Manual Valve Activation Mode and Temperature Log Recall. Diagnostic Mode Initiating Diagnostic Mode allows the Service Technician to observe real-time temperature readings from all thermis- tors without temperature averaging. If errors were registered by the thermistors or the defrost system, “Error Codes” will also be displayed during diagnostic mode. To initiate Diagnostic Mode, the unit must be ON, then press and hold either COLDER key, and press the UNIT ON/OFF key, then release both keys (See Figure 3-28). If no error codes are registered, the left display area will show real-time temperature of the thermistor, the right display area will show the thermistor location code, and all indicators will illuminate. Pressing either COLDER key or either WARMER key while in Diagnostic Mode will toggle to the next or previous thermistor location, respectively. (See Figure 3-29, 3-30 and 3-31) NOTE: If the COLDER and UNIT ON/OFF keys are pressed and held for ten (10) seconds, Manual Valve Activation Mode will be initiated (this is covered later in the section). NOTE: Diagnostic Mode will end ten (10) seconds after the last key stroke. Figure 3-28. Initiate Diagnostic Mode - Press and Hold Either COLDER Key, Then the UNIT ON/OFF Key (“UE” Indicates Upper Evaporator) Figure 3-29. Toggle Through Temperature Readings - Press Either COLDER Key or Either WARMER Key (“LE” Indicates Lower Evaporator) Figure 3-30. Toggle Through Temperature Readings - Press Either COLDER Key or Either WARMER Key (“UP” Indicates Upper Compartment) Figure 3-31. Toggle Through Temperature Readings - Press Either COLDER Key or Either WARMER Key (“LO” Indicates Lower Compartment) #3758410 - Revision C - May, 2014 3-16 Wine Storage (400- 2 ) Series Electronic Control System Diagnostic Mode Indicators If “EE” is observed in the left display area during Diagnostic Mode - The thermistor, or its wiring in the location indicated by the code at right is open or shorted (See Figure 3-32). Figure 3-32. “EE” Observed in Diagnostic Mode = Thermistor (or its wiring) Fault in Location Indicated If “EC” is observed in the right display area during Diagnostic Mode - Numbers at left are “Error Codes” (See Figure 3-33). Error Codes indicate problems logged by specific components. If error codes are logged, they will appear before temperature readings and can be toggled through with the temperature readings as described on the previous page. (See Error Code Table below.) Figure 3-33. Numbers at Left with “EC” at Right = Error Code (See Error Code Table Below) Wine Storage Error Code Table CODE INDICATION 05 Upper Cabinet Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s 06 Upper Evaporator Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s 07 Lower Cabinet Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s 08 Lower Evaporator Thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp’s 10 Upper Cabinet Warm Temperature alarm 11 Upper Cabinet Cold Temperature alarm 12 Lower Cabinet Warm Temperature alarm 13 Lower Cabinet Cold Temperature alarm 15 Sealed System Fault (evap temperature cannot drop 5° in 5 minutes, 3 consecutive valve activations) Clearing Error Codes If error codes are observed in diagnostic mode, a non-flashing SERVICE indicator will appear on the display when Diagnostic Mode ends, indicating error codes are still logged. To clear a non-flashing SERVICE indicator and the error codes, the problem must be corrected and the unit must be ON. Then, the bell key must be pressed and held for fifteen (15) seconds. The control will emit a short “beep” when the error codes is cleared. (See Figure 3-34) Press and hold for 15 seconds Figure 3-34. Clear Error Code & Non-flashing SERVICE Indicator - Press & Hold Bell Key for 15 Seconds 3-17 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Manual Valve Activation Mode Manual Valve Activation Mode forces the refrigerant valve to open (feeding refrigerant to the desired evaporator), and energizes the appropriate evaporator fan motor, as well as the compressor and condenser fan motor. Once ini- tiated, this mode lasts for five (5) minutes, during which time the evaporator temperature for that compartment is dis- played at the control panel. While in this mode, the Service Technician can observe the evaporator temperatures, and check for proper voltage readings at the activated components without having to wait for the evaporator to call for cooling. To initiate Manual Valve Activation Mode, the unit must be ON, then press and hold the desired compartment COLD- ER key and UNIT ON/OFF key for ten (10) seconds (See Figure 3-35). The evaporator temperature for that com- partment will be displayed in left display window and the right display window will show the thermistor location code. NOTE: If the COLDER and UNIT ON/OFF keys are pressed and held for less then ten (10) seconds, Diagnostic Mode will be initiated. This was covered earlier in the section. NOTE: It is possible to toggle through the other temperature readings, as in Diagnostic Mode, but in this case the temperature readings will last for five (5) minutes rather than ten (10) seconds. NOTE: The compressor overload could prevent the compressor from energizing. NOTE: Manual Valve Activation Mode will end five (5) minutes after initiated. It is possible to end this five (5) minute run time and return to normal operation by switching the unit OFF then back ON. If this is done, note that the electronic control will observe a three minute minimum compressor OFF time when the unit is switched back ON. This is to protect the compressor and its electricals. Press and hold for 10 seconds Figure 3-35. Initiating Refrigerant Valve Activation Mode: Press and Hold Desired COLDER Key and UNIT ON/OFF Key for 10 Seconds #3758410 - Revision C - May, 2014 3-18 Wine Storage (400- 2 ) Series Electronic Control System Temperature Log Recall Mode The electronic control system is equipped with a temperature history data storage system. This system logs/stores the average temperature of each individual thermistor every four hours, along with any event indicators (explained later in this section), that may have occurred. These four-hour periods are referred to as “indexes”. Up to 64 index- es can be stored for each compartment, making it possible to observe the preceding ten days, sixteen hours of the unit’s temperature history (each index equals 4 hour temperature average; 4 hours X 64 indexes = 10 days, 16 hours). After 64 indexes are stored, each new index will bump the oldest index. Index number “1” being the most recent four-hour temperature average and index number “64” being the oldest. Accessing this temperature history data so it can be viewed on the display is accomplished by initiating Temperature Log Recall Mode. To initiate the Temperature Log Recall Mode, the unit must be ON. Now, press and hold the desired compartment WARMER key, then press the UNIT ON/OFF key, then release both keys (See Figure 3-36). The left display window will show average compartment thermistor temperature and in the right display window will be the index number. The first index number will be “1”, indicating the most recent four-hour temperature average. Figure 3-36. Initiating Temperature Recall Mode: Press WARMER Key and UNIT ON/OFF Key (First Reading is Latest Average Temperature with Index #1 Displayed) To toggle up through the indexes (from 1 to 64), press the same WARMER key in multiple key strokes (See Figure 3-37). To toggle down through the indexes (from 64 to 1), press the corresponding COLDER key in multiple key strokes (See Figure 3-38). Figure 3-37. Toggle UP Through Indexes, Press WARMER Key in Multiple Key Strokes Figure 3-38. Toggle DOWN Through Indexes, Press COLDER Key in Multiple Key Strokes 3-19 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series Temperature Log Event Indicators The diagrams below illustrate possible event indicators that may be observed while in Temperature Log Recall Mode. (See Figures 3-39 through 3-41) Figure 3-39. BELL ON Illuminates - Indicates Power Failure / Interruption During that Index Period Figure 3-40. SERVICE Illuminates - Indicates Unit was switched OFF During that Index Period by Pressing UNIT ON/OFF Key Figure 3-41. Double Dashes ( - - ) Displayed Instead of Temperature for Several Consecutive Index Periods - Indicates Bad EEPROM on Control Board. Board Must be Replaced NOTE: If the unit was in Showroom Mode during any of the 64 indexes, average temperatures will continue to be logged. No event indicator will appear with these temperatures. NOTE: If the unit was switched OFF by pressing the UNIT ON/OFF key during any of the 64 indexes and there was still 115V AC supplied to the control board, the average temperatures will continue to be logged. This means tem- peratures would be expected to rise and the SERVICE indicator would be present in all indexes in which the unit was switched OFF. NOTE: Temperature Log Recall Mode will end ten (10) seconds after the last key stroke. #3758410 - Revision C - May, 2014 3-20 Wine Storage (400- 2 ) Series Electronic Control System WINE STORAGE TEMPERATURE LOG INDEX CHART Index # Previous Hours Time Frame Index # Previous Hours Time Frame Index # Previous Hours Time Frame 1 4 Hours 23 92 Hours 45 180 Hours 2 8 Hours 24 96 Hours (4 Days) 46 184 Hours 3 12 Hours 25 100 Hours 47 188 Hours 4 16 Hours 26 104 Hours 48 192 Hours (8 Days) 5 20 Hours 27 108 Hours 49 196 Hours 6 24 Hours (1 Day) 28 112 Hours 50 200 Hours 7 28 Hours 29 116 Hours 51 204 Hours 8 32 Hours 30 120 Hours (5 Days) 52 208 Hours 9 36 Hours 31 124 Hours 53 212 Hours 10 40 Hours 32 128 Hours 54 216 Hours (9 Days) 11 44 Hours 33 132 Hours 55 220 Hours 12 48 Hours (2 Days) 34 136 Hours 56 224 Hours 13 52 Hours 35 140 Hours 57 228 Hours 14 56 Hours 36 144 Hours (6 Days) 58 232 Hours 15 60 Hours 37 148 Hours 59 236 Hours 16 64 Hours 38 152 Hours 60 240 Hours (10 Days) 17 68 Hours 39 156 Hours 61 244 Hours 18 72 Hours (3 Days) 40 160 Hours 62 248 Hours 19 76 Hours 41 164 Hours 63 252 Hours 20 80 Hours 42 168 Hours (7 Days) 64 256 Hours (10 Days, 21 84 Hours 43 172 Hours 16 Hours) 22 88 Hours 44 176 Hours NOTE: The chart above applies to the hours in which the control has power. Temperature history data is stored whenever the control has 115V AC supplied to it. If power to the unit is interrupted, the average temperatures for that time period are stored with the event indicator. The temperature history data is stored in a non-volatile memory, so the data is not erased by a power failure, but actual time passage during the power failure will not be shown. 3-21 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series MODEL 427R-2 REFRIGERATOR SECTION ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS The table below defines some of the basic electronic control system terminology. Term/Component Definition / Description Main Control Board ..……....…… The printed-circuit board (PC Board) which contains a microprocessor, relays, triacs and electrical connections that monitor and control all functions of the appliance. Microprocessor ……….…....…... An electrical component on the control board which receives electrical signals from other components, processes the information, then sends electrical signals to relays and triacs on the board to open or close, switching components in the appliance ON or OFF. Relay …………………….....……. An electrical component on the control board which switches other components in the appliance ON or OFF when instructed to do so by the microprocessor. Triac …………………….......…… Similar in function to the relay, the triac is a three terminal semiconductor for controlling current in either direction. Control Panel Assembly ….....… (Also referred to as the Control Keypad Interface), is that part of the electronic control system where all input operations are performed (located at top front of upper drawer). Membrane Switch ……….……... Part of the control panel assembly, which consists of the function keys. Keys (Function Keys) ……......... The “buttons” on the Membrane Switch used for input operations: “POWER”, “ALARM”, “ICE MAKER”, “WARMER” and “COLDER” LCD (Liquid Crystal Display) ..... A semi-liquid substance sandwiched between glass in the display of the control panel assembly. The molecules of this semi-liquid substance have no specific orientation. However, when electricity is applied to them, they react predictably, aligning and straightening in such a way as to control light passage. Indicators .....……..………….…... The words, numbers and icons that appear on the display of the control panel assembly through the use of LCD’s. Error Codes .………...…………... The code numbers that may appear on the display of the control panel assembly when accessing Error Code History. Error Codes are logged if the unit experienced specific problems related to electrical signals supplied by electrical components. Temperature Units of Measure.... Temperature observed on the display of the control panel assembly may be in Fahrenheit units of measure (°F) or Celsius units of measure (°C). A series of key strokes allows the temperature units of measure to be switched to display as either °F or °C. Set-Point ……………...……….... The desired zone temperature, established by pressing the COLDER or WARMER keys. High Offset (Cut-in) ……...…...... As the zone air temperature cycles up and down, the high offset is the maximum zone temperature that the electronic control system will allow before calling for cooling. Low Offset (Cut-out)………........ As the zone air temperature cycles up and down, the low offset is the minimum zone air temperature that the electronic control system will allow before interrupting cooling. Thermistor ……………..………. (Also Referred to as a Temperature Sensor), is a resistor with which resistance changes as the temperature around it changes. For electronic control system purposes, the microprocessor measures the resistance, then displays it as a temperature reading. #3758410 - Revision C - May, 2014 3-22 Wine Storage (400- 2 ) Series Electronic Control System MODEL 427R-2 REFRIGERATOR SECTION ELECTRONIC CONTROL SYSTEM OVERVIEW This page contains the wiring schematic for the refrigerator section of the model 427R-2. Input operations for the electronic control system are performed at the control panel (located inside the upper drawer), with monitoring, regu- lating and controlling functions taking place at the main control board. Temperatures and possible problems with the unit are shown in the control panel display. The entire electronic control system is described in greater detail on the following pages. NOTE: For more detailed electrical diagrams refer to the wiring diagram and schematic supplied with the unit. HIGH VOLTAGE L1 NEUT 115 VOLTS NEUTRAL WHITE NEUTRAL WHITE 60 CYCLES ORANGE CONDENSER FAN MOTOR M WHITE J2 P4 2000 Ω BLACK BLACK PURPLE MULLION HEATER P3 PURPLE P1 OVERLOAD COMPRESSOR J6 BLUE PROTECTOR STARTING RELAY P2 M COMPRESSOR J4 MAIN EVAPORATOR FAN MOTOR M RED RED BOARD TOP DRAWER LIGHTS J3 YELLOW DOOR SWITCH J5 6 5 4 LOWER DRAWER LIGHTS ORANGE DOOR SWITCH 1 3 DPDT RELAY NEUTRAL WHITE ORANGE LOW VOLTAGE BLUE W/ WHITE BLUE /W BLACK THERMISTER CABINET BLUE W/ WHITE BLUE /W BLACK THERMISTER BLUE WHITE PURPLE BLACK EVAPORATOR P2 P3 P4 P1 J3 MAIN BOARD DRAWER CONTROL J2 J5 J6 J4 BLACK WHITE RED YELLOW ORANGE BLUE Figure 3-42. 427R-2 Wiring Schematic 3-23 #3758410 - Revision C - May, 2014 Electronic Control System Wine Storage (400- 2 ) Series MODEL 427-2 REFRIGERATOR SECTION CONTROL BOARD LAYOUT AND SUMMARY TABLE Electrical connection points on the control board are labeled alphanumerically. These labels correspond with the alphanumeric summary table, located on the wiring diagram. By referencing the summary table, it is possible to identify which components are connected at which points on the main control board. Below is a layout diagram of the control board, and a copy of the summary table. (See Figures 3-43 & 3-44) NOTE: All components on the control board are non-replaceable. If a problem with the control board is identified, the complete control board must be replaced. NOTE: There is also a small PC board in the control panel assembly (Not Shown). All components in the control panel assembly are non-replaceable. If a problem with the control panel is identified, the complete control panel assembly must be replaced. BLUE WHITE PURPLE BLACK P2 P3 P4 P1 J3 MAIN BOARD J2 J5 J6 J4 Figure 3-43. Main Control Board Layout MAIN CONTROL BOARD SUMMARY TERMINAL CIRCUIT DESCRIPTION FUNCTION COLOR 120 VOLT CIRCUITS P4 LN NEUTRAL NEUTRAL INTO BOARD WHITE P3 L1 POWER IN POWER INTO BOARD BLACK P1 COMPRESSOR COMPRESSOR POWERS COMPRESSOR AND CONDENSER FAN PURPLE P2 DEFROST DEFROST HEATER POWERS DEFROST CIRCUIT AND FILL TUBE HEATER BLUE J3-1 FAN 1 EVAPORATOR FAN POWERS EVAPORATOR FAN RED J3-2 NOT USED J3-3 NOT USED J3-4 NOT USED J3-5 NOT USED J3-6 NOT USED J3-7 LIGHTS LIGHTS POWERS LIGHTS YELLOW J2-1 NOT USED J2-2 UPR DRAWER LIGHT SENSE SENSES IF DRAWER OPEN ORANGE J2-3 NOT USED J2-4 NOT USED LOW VOLTAGE THERMISTOR CIRCUITS J5-1,2 NOT USED J5-3,4 UPPER J5-5,6 REFRIGERATOR COMPARTMENT SENSES REFER CABINET TEMPERATURE BLUE/WHITE J5-7 EVAP EVAPORATOR SENSES EVAPORATOR TEMPERATURE BLUE/YELLOW J5-8 EVAP EVAPORATOR SENSES EVAPORATOR TEMPERATURE BLUE/YELLOW J6-1 NOT USED J6-2 NOT USED J6-3 NOT USED J4-1 DISPLAY DISPLAY WIRING 12VDC POWER SUPPLY FOR DISPLAY BOARD BLACK J4-2 DISPLAY DISPLAY WIRING 12VDC POWER SUPPLY FOR DISPLAY BOARD WHITE J4-3 DISPLAY DISPLAY WIRING SERIAL DATA RECEIVE RED J4-4 DISPLAY DISPLAY WIRING SERIAL DATE TRANSMIT YELLOW J4-5 DISPLAY DISPLAY WIRING GROUND FOR DISPLAY BOARD POWER SUPPLY ORANGE J4-6 DISPLAY DISPLAY WIRING GROUND FOR DISPLAY BOARD POWER SUPPLY BLUE Figure 3-44. Control Board Summary Table #3758410 - Revision C - May, 2014 3-24
Enter the password to open this PDF file:
-
-
-
-
-
-
-
-
-
-
-
-