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Related Manuals for Sub-Zero WOLF BW Series
Summary of Contents for Sub-Zero WOLF BW Series
- Page 1 subzero.com 800.222.7820 BW Built-In Wine Storage Service Manual General Information Controls & Operation Sealed System Air Flow & Fan Blade Spacing Component Access & Removal Troubleshooting Guide Technical Data Wiring Diagrams...
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Page 2: Important Safety Information
“NOTE”, which highlights information that is especially important for the topic being covered. This manual is designed to be used by Certified Service Personnel only. Sub-Zero Group, Inc. assumes no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than Certified Service Technicians. -
Page 3: Warranty Information
Warranty Details: * Includes, but is not limited to the following: This page summarizes the 2, 5 & 12 Year Warranty pro- vided with every Sub-Zero appliance, as well as the two Electronic Control System Components, Fan & Light special warranties: Switches, Fan Motors &... -
Page 4: Model Description
Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series General Information MODEL DESCRIPTIONS This section briefly describes the models covered in this Technical Service Manual. NOTE: Functional parts are common to each model configuration, meaning for example, models BW-30/O, BW- 30/S/TH, and etc., will utilize common functional parts. - Page 5 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS The BW Series utilizes an electronic control system which monitors, regulates, controls and displays a variety of functions and operations in the appliance. The table below defines some of the basic electronic control system terminology.
- Page 6 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series BASIC WINE STORAGE ELECTRONIC CONTROL SYSTEM This page contains a basic illustration of the BW Series electronic control system (See Figure 2-1). Input operations are performed at the membrane switch (part of the the control panel assembly), with monitoring, regulating and con- trolling functions taking place at the control board (located directly behind the control panel).
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Page 7: Control Board
Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series WINE STORAGE CONTROL BOARD LAYOUT AND SUMMARY TABLE The electrical connection points on the wine storage control board are labeled Alphanumerically. These labels correspond with the alphanumeric control board summary layout table on the wiring dia- gram. - Page 8 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series WINE STORAGE CONTROL PANEL LAYOUT Upper Compartment COLDER WARMER TEMP/DOOR Alarm & Upper SERVICE ALARM POWER Compartment LED indicators ON/OFF key Display Window LIGHTS Lower ON/OFF Compartment LED Display Window COLDER WARMER...
- Page 9 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series Adjusting Set-Points To adjust set-points, press the WARMER or COLDER keys on the control panel in multiple key strokes until the desired set-point is achieved (See Figure 2-6). One key stroke equals a one degree change. The set-point will be displayed for three seconds after the last key stroke.
- Page 10 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series UNIQUE 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 The electronic control is initially set to display temperature in Fahrenheit (°F) units of measure.
- Page 11 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series 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, begin by switching the unit OFF using the POWER key (See Figure 2-11).
- Page 12 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series FUNCTION OF THE WINE STORAGE ELECTRONIC CONTROL SYSTEM The following pages explain monitoring, regulating and controlling functions of the electronic control system. Signal traces from the BW-30 wiring schematic are used to show current flow for the functions being explained. ELECTRIC SHOCK HAZARD! POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER SERVICING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR ELECTRICAL COMPONENTS.
- Page 13 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series 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.
- Page 14 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Monitor and Control Off-cycle Defrost With High Offset (Cut-in) being governed by evaporator temperatures, the refrigeration system will remain off until at least one evaporator temperatures exceed set-point by one degree. With a set-point of 40°F, the high-offset would be 41°F;...
- Page 15 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series POSSIBLE WINE STORAGE ERROR/FAULT INDICATORS All wine storage units are equipped with an audio-visual temperature and door 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 tempera- ture/door alarm feature and the audio and/or visual error indicators that may alert a customer of a malfunction.
- Page 16 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Cold Temperature Alarm A cold temperature alarm can occur if either wine storage compartment remains below 40°F too long, in conjunction with several consecutive maximum run-time cycles. A cold temperature alarm situation will cause the SERVICE indi- cator to flash (See Figure 2-21), and an appropriate error code to be logged;...
- Page 17 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series Thermistor Malfunction Error/Fault Indicators The diagrams below illustrating what a customer may see on the display if there is a thermistor fault, such as a short circuit or open circuit condition. (See Figures 2-24, 2-25, 2-26) A thermistor fault will cause power to the compres- sor and fans to be cut, and appropriate error codes will be logged.
- Page 18 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) 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 Mode. Diagnostic Mode Initiating Diagnostic Mode allows the Service Technician to observe real-time temperature readings from all thermis- tors without temperature averaging.
- Page 19 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series Diagnostic Mode Alerts “EE” observed in the left display window during Diagnostic Mode - The thermistor, or its wiring in the location indicated by the code at right is open or shorted (See Figure 2-31). Figure 2-31.
- Page 20 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Manual Valve Activation Mode Manual Valve Activation Mode forces the refrigerant valve to feed refrigerant to the desired evaporator, while ener- gizing the appropriate evaporator fan motor along with the the compressor and condenser. Once initiated, the mode lasts for five minutes, during which time the chosen evaporator’s temperature is displayed at the control panel.
- Page 21 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series 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 both zone/compartment thermistors every four hours, along with any event alerts (explained later in this section), that may have occurred.
- Page 22 Electronic Control System Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Temperature Log Event Alerts The diagrams below illustrate possible event alerts that may be observed while toggling through readings in Temperature Log Recall Mode. (See Figures 2-38 through 2-41) Figure 2-38.
- Page 23 Built-In Wine Storage (BW) Series Electronic Control System Built-In Wine Storage (BW) Series WINE STORAGE TEMPERATURE LOG INDEX CHART Index # Previous Time Frame/Hours Index # Previous Time Frame/Hours Index # Previous Time Frame/Hours 4 Hours 92 Hours 180 Hours 8 Hours 96 Hours (4 Days)
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Page 24: Hfc-134A Refrigerant Service Information
Sealed System Information Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series HFC-134a REFRIGERANT SERVICE INFORMATION The sealed system contains HFC-134a refrigerant. This section gives some general rules for working with 134a, and explains procedures to be followed while servicing the sealed system. 134a refrigerant requires synthetic Ester oil in the compressor, and does not tolerate contamination from other refrigerants, moisture, petroleum-based lubricants, silicone lubricants, cleaning compounds, rust inhibitors, leak detection dyes, or any other type of additive. - Page 25 Sealed System Information Built-In Wine Storage (BW) Built-In Wine Storage (BW) WINE STORAGE 134a SEALED SYSTEM REPAIR PROCEDURES Problem Service Procedures Non-Operating, Inefficient, Capture refrigerant Noisy Compressor Replace Compressor Replace filter-drier (NOTE: To check for a non- Evacuate or sweep charge system operating compressor, a hard NOTE: If evacuating the sealed system, you must evacuate from both the low &...
- Page 26 Sealed System Information Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series WINE STORAGE SEALED SYSTEM FRAME HEATER (HOT GAS) The following six diagrams illustrate a basic wine stor- age sealed system. The components are listed in order of refrigerant flow, with an explanation of their funda- mental role as part of a sealed system.
- Page 27 Sealed System Information Built-In Wine Storage (BW) Built-In Wine Storage (BW) Capillary Tubes & Heat Exchangers (Figure 3-4) FRAME HEATER (HOT GAS) The high-pressure warm liquid refrigerant travels through the long skinny capillary tube which is soldered CAPILLARY TUBE to the suction tube (these two tubes soldered together create the heat exchanger).
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Page 28: Refrigerant Flow Diagrams
Sealed System Information Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series REFRIGERANT FLOW DIAGRAMS Frame Heater (Hot Gas) Upper Heat Exchanger Upper Compartment Evaporator Lower Heat Exchanger Lower Compartment Evaporator “T” Connection Condenser Filter-Drier Compressor AWECO Valve Figure 3-7. Model BW-30 Refrigerant Flow #7040743 - Revision A - September, 2016... - Page 29 Air Flow Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series AIR FLOW / EVAPORATOR FAN-BLADE SPACING 7/8" ± 1/16" (2.22 cm ± .16 cm) CLAMP FORWARD (LOWER FAN BLADE) (UPPER FAN BLADE) CLAMP UP 7/8" ± 1/16" (2.22 cm ± .16 cm) Figure 4-1.
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Page 30: Component Access And Removal
Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal COMPONENT ACCESS AND REMOVAL This section explains how to remove components from the Model BW-30. An attempt has been made to arrange these procedures in such a way as to simulate which components would need to be removed first in order to gain access to other components. -
Page 31: Exterior Cosmetic And Mechanical Components
Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal EXTERIOR COSMETIC AND MECHANICAL COMPONENTS Kickplate To remove a kickplate, extract the screws from the left and right corners of the kickplate, then pull the kickplate forward. (See Figure 5-1). Screw Dual Installation Kickplate A dual installation kickplate assembly is held in place... - Page 32 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Door Switch The door switch is located at the top rear of the top cabinet frame, with the switch’s actuator protruding through a hole in the front of the frame. A series of tabs and pegs hold the door switch in place.
- Page 33 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Grille Assembly The grille assembly is attached at the top of the unit with screws passing through the grille’s side frames into Grille Bracket Grille Mounting Screws grille brackets. To remove a grille assembly (See Figure 5-6): 1.
- Page 34 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Top Door Hinge Assembly The top hinge assembly is secured to the unit with bolts that pass down through the cabinet hinge plate into threaded inserts. Screws passing down through the door hinge secure the hinge assembly to the door.
- Page 35 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Door Assembly The door assembly is secured to the top and bottom door hinges with screws. The post of the bottom door Bottom Cabinet Hinge Assembly hinge fits down into a bearing in the bottom cabinet hinge assembly’s door adjuster.
- Page 36 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal INTERIOR COSMETIC AND MECHANICAL COMPONENTS Door Gasket A dart at the back of the door gasket fits into metal Metal Channels channels attached to the inside perimeter of the door. To remove a door gasket, starting at one corner, pull the gasket dart from the metal channels.
- Page 37 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Upper Light Strip Light Strip Housing The upper light strip is inserted in the channel of the upper light strip housing. To remove the upper light strip, first remove the upper wine rack assemblies, then (See Figure 5-17): 1.
- Page 38 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Upper Evaporator Fan Assembly Fan Motor The upper evaporator fan assembly is attached to the rear wall of the compartment with screws. Fan Bracket Pocket To remove the upper evaporator fan assembly, first remove the fan cover and upper duct, then (See Figure 5-20): 1.
- Page 39 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Lower Duct Grille and Lower Duct Duct Grille The lower duct grille rests on top of the lower fan shroud assembly, with notches at each side of the grille fitting over tabs that are molded into the fan shroud.
- Page 40 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Lower Compartment Thermistor The lower compartment thermistor is attached to the hinge side wall with a clamp . To remove a compartment thermistor, first remove the Clamp lower duct cover, then (See Figure 5-26): Thermistor 1.
- Page 41 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Control Panel Assembly and Lower Light Bracket Removal The control panel assembly and the lower light bracket are attached to each other and must be removed together. To remove the control panel assembly and the lower light bracket, first remove at least the top three wine racks from the unit, then (See Figure 5-29): 1.
- Page 42 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Control Area Grille The control area grille covers the left hand side of the compressor compartment. To remove the control area grille, first raise the grille assembly, then (See Figure 5-31): 1.
- Page 43 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Condenser Fan Motor Brackets The condenser fan is mounted to the condenser fan shroud with three fan mounting brackets that hook into grommets that are in the condenser fan shroud. At the back of the motor, screws pass through these brackets into the back of the fan motor.
- Page 44 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal MODEL BW-30 SEALED SYSTEM COMPONENTS The sealed system components at the top of the appli- ance sit on a sliding unit tray. The tray is design so that the sealed system can be accessed without having to pull the unit from the installation.
- Page 45 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Compressor Compressor Electrical The Compressor is secured to the unit tray with three Assembly, shoulder screws that pass down through rubber grom- Capacitor & Clip Compressor mets in the compressor base and into holes in unit tray. A metal tab formed into the unit tray passes up through the fourth rubber grommet and the compressor base.
- Page 46 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Evaporator The evaporators are attached to the rear wall of the Cut Here compartments with screws, behind the compartment duct assemblies. To remove an evaporator, first capture the refrigerant from the sealed system, then (See Figure 5-40): 1.
- Page 47 Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Component Removal Heat Exchanger The heat exchangers are not available as a separate Heat part. If the heat exchanger needs to be replaced order Exchanger the evaporator assembly. The upper heat exchanger passes through the ceiling in the upper compartment and the lower heat exchanger passes through the back wall in the lower compartment.
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Page 48: Thermistor Location
Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series TROUBLESHOOTING GUIDES This section of the manual contains: • Temperature Problem Diagnostic Worksheets • Error Code Tables and the Error Code Troubleshooting Guides • General Troubleshooting Guide • Sealed System Diagnostic Tables •... - Page 49 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series TEMPERATURE PROBLEM DIAGNOSTIC WORKSHEET Temperature Displayed: Lower _________ Upper _________ Set-Point: Lower _________ Upper _________ Diagnostic Mode Thermistor Readings: (Error Codes) _______________________________________ (Upper Evap) ________ (Lower Evap) ________ (Upper Cmprt) ________ (Lower Cmprt)________ Logged Temp.
- Page 50 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series TEMPERATURE PROBLEM DIAGNOSTIC WORKSHEET Temperature Displayed: Lower _________ Upper _________ Set-Point: Lower _________ Upper _________ Diagnostic Mode Thermistor Readings: (Error Codes) _______________________________________ (Upper Evap) ________ (Lower Evap) ________ (Upper Cmprt) ________ (Lower Cmprt)________ Logged Temp.
- Page 51 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series TEMPERATURE PROBLEM DIAGNOSTIC WORKSHEET Temperature Displayed: Lower _________ Upper _________ Set-Point: Lower _________ Upper _________ Diagnostic Mode Thermistor Readings: (Error Codes) _______________________________________ (Upper Evap) ________ (Lower Evap) ________ (Upper Cmprt) ________ (Lower Cmprt)________ Logged Temp.
- Page 52 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Wine Storage Error Code Troubleshooting Guide Instructions Error Codes indicate problems logged by specific components. If error codes are logged, they appear before tem- perature readings while in Diagnostic Mode and they can be toggled through with the temperature readings. 1.
- Page 53 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series WINE STORAGE ERROR CODE TROUBLESHOOTING GUIDE Error Code Test / Action EC 05 a. Check upper compartment thermistor electrical connections and continuity from thermistor to J2 on control board.
- Page 54 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series General Troubleshooting Guide The Table of Contents below indicates how the General Trouble Shooting Guide is arranged. 1. As close as possible, match the complaint, or description of the problem the unit is experiencing with those in the table of contents below.
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Page 55: Test / Action
Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series PROBLEM POSSIBLE CAUSE TEST / ACTION A. SERVICE FLASHING See Error Code Troubleshooting Guide See Error Code Troubleshooting Guide B. WARM TEMPERATURE IN Control Set Too Warm Check set-points. Adjust set-points COLDER BOTH WINE STORAGE COMPARTMENTS Adjust set-points colder, listen for compressor... - Page 56 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series PROBLEM POSSIBLE CAUSE TEST / ACTION C. WARM TEMPERATURE IN Control Set Too Warm Check/adjust set-points. ONLY ONE WINE STORAGE COMPARTMENT Unit Recently Energized Allow time for unit to pull down to temperature Unit Recently Stocked with Wine Allow time for unit to pull down to temperature High Room Ambient...
- Page 57 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series PROBLEM POSSIBLE CAUSE TEST / ACTION D. ACTUAL VS. DISPLAYED Wrong Units of Measure Selected, Initiate Temperature Units Selection Mode to TEMPERATURE OVER 10° (Fahrenheit - °F vs. Celsius - °C) check units of measure (°F or °C) selected.
- Page 58 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series PROBLEM POSSIBLE CAUSE TEST / ACTION NO LIGHTS Unit in Sabbath Mode Press & release POWER key. Door Switch Disconnected or Check switch electrical connections. Check Malfunctioning for power to / from switch. Reconnect or replace switch if defective.
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Page 59: Normal Operating Pressures
Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series SEALED SYSTEM DIAGNOSTIC INFORMATION NOTES: • The temperature/pressure table below is for reference only. A unit's temperature/pressure correlation may differ from those listed due to: variations in evaporator thermistor location, set-points, where the sealed system is in the refrigeration cycle, ambient temperature, etc. - Page 60 Troubleshooting Guides Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series WINE STORAGE MEMBRANE SWITCH / RIBBON CABLE TEST PROCEDURE The membrane switch is that part of the control panel assembly consisting of the function keys used for all input functions to the electronic control system.
- Page 61 Technical Data Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series Model BW-30 REFRIGERATOR CHARGE (R-134a Refrigerant) 4.5 oz NOTE: Always check serial tag for exact charge NORMAL OPERATING PRESSURES Low Side 10 psig to 36 psig High Side 90 psig to 100 psig COMPRESSOR Original/Service Compressor Amps...
- Page 62 Wire Diagrams/Schematics Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series WIRE DIAGRAM MODELS: BW-30 - This wiring information is provided for use by qualified service personnel only. - Disconnect appliance from electrical supply before beginning service. - Be sure all grounding devices are connected when service is complete. - Failure to observe the above warnings may result in severe electrical shock.
- Page 63 Wire Diagrams/Schematics Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series WIRE SCHEMATIC MODELS: BW-30 - This wiring information is provided for use by qualified service personnel only. - Disconnect appliance from electrical supply before beginning service. - Be sure all grounding devices are connected when service is complete. - Failure to observe the above warnings may result in severe electrical shock.
- Page 64 Wire Diagrams/Schematics Built-In Wine Storage (BW) Series Built-In Wine Storage (BW) Series CONTROL BOARD & CHART MODELS: BW-30 - This wiring information is provided for use by qualified service personnel only. - Disconnect appliance from electrical supply before beginning service. - Be sure all grounding devices are connected when service is complete.