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Related Manuals for Subzero 400-2 Series
Summary of Contents for Subzero 400-2 Series
- Page 1 800.222.7820 Service Manual Troubleshooting Guide...
- Page 2 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- TROUBLESHOOTING GUIDES This section of the manual contains: • Temperature Problem Diagnostic Worksheets (does not apply to 427R-2 refrigerator section) • Error Code Tables and the Error Code Troubleshooting Guides •...
- Page 3 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- 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 4 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- 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 5 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- 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 6 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- Wine Storage Error Code Troubleshooting Guide Instructions Error Codes indicate problems registered by specific components. If error codes are registered, they will appear before temperature readings while in Diagnostic Mode. 1.
- Page 7 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- WINE STORAGE ERROR CODE TROUBLESHOOTING GUIDE Error Code Test / Action Check upper compartment thermistor electrical connections and continuity from thermistor to J2 on control board. Reconnect / repair connections. Check resistance of upper compartment thermistor for 30,000 to 33,000 ohms at 32°F/ 0°C.
- Page 8 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- Model 427R-2 Refrigerator Error Code Troubleshooting Guide Instructions Error Codes indicate problems registered by specific components. If error codes are registered, they will appear before temperature readings while in Diagnostic Mode. 1.
- Page 9 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- 427R-2 REFRIGERATOR COMPARTMENT ERROR CODE TROUBLESHOOTING GUIDE TEST / ACTION A. If “EE” for refrigerator compartment was displayed and “SERVICE” flashing, check the following: Thermistor electrical connections and continuity from thermistor to control board. Reconnect / repair. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F.
- Page 10 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- 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 11: Test / Action
Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- 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 Unit in Showroom Mode... - Page 12 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- 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 Unit Recently Stocked with Wine Instruct customer High Room Ambient...
- Page 13 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- 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 14 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- PROBLEM POSSIBLE CAUSE TEST / ACTION J. CONTROL PANEL KEYS Control Panel Ribbon Cable Plugged in Check control panel ribbon cable at control MALFUNCTIONING Wrong panel (silver area of terminal away from con- trol board).
- Page 15 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- PROBLEM POSSIBLE CAUSE TEST / ACTION P. “EE” Displayed in place of Refrigerator Compartment Thermistor Check refrigerator compartment thermistor Refrigerator Temperature Disconnected, Shorted, or misread electrical connections from thermistor to with “SERVICE”...
- Page 16 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- PROBLEM POSSIBLE CAUSE TEST / ACTION (Continued) Refrigerator Compartment Fan Fault T. Warm Refrigerator Temperatures, “SERVICE” a. Fan blade obstructed or out of position a. Move obstruction or reposition blade. not displayed or Flashing b.
- Page 17 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- PROBLEM POSSIBLE CAUSE TEST / ACTION X. No Lights No power to unit Check / correct power supply to unit. Unit switched OFF Switch unit ON, press UNIT ON/OFF key. Unit in Sabbath Mode Exit Sabbath Mode, press UNIT ON/OFF key.
- Page 18 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- SEALED SYSTEM DIAGNOSTIC INFORMATION Temperature Pressure NOTES: -30°F / -34°C 10” Vac / -.69 Bar • The temperature/pressure table at right and the normal -25°F / -32°C 7” Vac / -.48 Bar operating pressures listed below are for reference only.
- Page 19 Wine Storage Series Wine Storage Series TroubleShoot Guide (400- (400- 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. (See Figure 7-1) Perform the eight continuity checks below if the integrity of the membrane switch and/or its ribbon cable is suspect.
- Page 20 Wine Storage Series TroubleShoot Guide Wine Storage Series (400- (400- MODEL 427R-2 REFRIGERATOR MEMBRANE SWITCH / RIBBON CABLE TEST PROCEDURE If the integrity of the refrigerator control panel assembly is suspect, continuity tests should be performed at the mem- brane switch ribbon cable terminal housing. Begin by removing the control panel assembly from the unit and place it on a solid surface.
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