Model reference
Sub-Zero 648PROHAG
Refrigerator
2 documents34 error codes16 service modes
Available documentation
Service Manual
- Sub-Zero Service Manual: 648PRO — Service Manual100 pg
Parts Manual
- Sub-Zero Parts Manual: 648PRO — Parts Manual9 pg
MyPros+ Max
Diagnose your Sub-Zero 648PROHAG.
- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Error codes (34)
CodeMeaning
01Zone X Cabinet Thermistor Failure (Device or Wiring).02Zone X Evaporator Thermistor Failure (Device or Wiring).03Zone X Condenser Thermistor Failure (Device or Wiring).04Ambient Thermistor Failure (Device or Wiring).20Check Zone X Defrost Bi-metal for Proper Operation.21Check Zone X Defrost Bi-metal for Proper Operation.22Check Zone X Defrost Wiring.23Check Zone X Defrost Wiring.24Check Zone X Defrost Heater Ohms.30Check for Stuck Icemaker or Water Valve Failure.35Zone X Fan Speed Error.40Zone X Excessive Compressor Run.41Check Zone X Compressor and Wiring.42Check Condenser Fan and/or Wiring.43Check Left Refrigerant Valve and Wiring.44Check Zone X Glass Door Heater and Wiring.45Errors Detectable with Red Door Switches46Check Ice Accessory Wiring for Open Circuit.47Check Accent Lighting Wiring for Short Circuit.80Check Power to Compressor Controller for Zone X; Troubleshoot with Manual…83Replace Zone X Variable Speed Compressor and Filter-Drier.84Check Zone X Variable Speed Compressor Wiring.85Zone X Variable Speed Compressor Control Overheat.86Check Communication Wiring, Replace Zone X VS Controller.87Check for Broken Wiring or Open Defrost Heater.89Check Icemaker Solenoid Valve and Wiring.90Change Main Control Board.91Primary on accent LED power supply; both bulbs must be burned out on drawers to…92Check Keypad Wiring.93Replace Keypad.Service modes (16)
- Diagnostics - Activate Zone (Manual Activation Mode)After initiating Service Mode, press ALARM once, press COLDER three (3) times, press ALARM
- Diagnostics - Clear Error HistoryAfter initiating Service Mode, press ALARM once, press COLDER once, press ALARM once, press COLDER…
- Diagnostics - Error HistoryAfter initiating Service Mode, press ALARM once, press COLDER once, press ALARM two (2) times
- Diagnostics - Self TestAfter initiating Service Mode, press ALARM key three (3) consecutive times
- Diagnostics - StatisticsAfter initiating Service Mode, press ALARM once, press COLDER four (4) times, press ALARM
- Diagnostics - Thermistor ReadAfter initiating Service Mode, press ALARM once, press COLDER two (2) times, press ALARM
- Manual Freezer Evaporator DefrostPress and hold the ICE MAKER key for five (5) seconds.
- Manual Zone Disable ModeWith unit ON, press and hold the WARMER key for the zone being disabled, then press the POWER key…
- Model InformationAfter initiating Service Mode, press COLDER two (2) times, press ALARM two (2) times
- Operational Status - Ice MakerAfter initiating Service Mode, press COLDER once, press COLDER once, press ALARM once
- Operational Status - Zone StatusAfter initiating Service Mode, press COLDER once, press ALARM two (2) times
- Sabbath ModeSwitch unit OFF using POWER key, then press and hold POWER key for approximately 10 seconds until…
- Service Mode (Main)Press and hold any COLDER key, then press the POWER key, then release both keys.
- Showroom ModeSwitch unit OFF using POWER key, then press and hold any pair of WARMER and COLDER keys, then press…
- Temperature Units Selection Mode (°F / °C)Within first 1 minute after switching unit ON, press and hold the ALARM key and the POWER key…
- Version InformationAfter initiating Service Mode, press COLDER three (3) times, press ALARM once
Full entry steps, exit procedures, and test sequences are available in Max.
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