Model reference

Sub-Zero 648PROG

Name: Sub-Zero 648PROG
Brand: Sub-Zero

Refrigerator

7 documents41 error codes28 service modes

Available documentation

Service Manual

Pro-Series Technical Service Manual (Model 648PRO - AKA PRO48)120 pg
Covers this model
Sub-Zero Service Manual: 648PRO — Service Manual100 pg
Covers this model
Technical Service/Training Manual (Addendum) 600 Series216 pg
Covers this model
Technical Service Manual 600 Series Prior to Serial #1810000134 pg
Covers this model

Training

600 Series Technical Service/Training Manual (Addendum)216 pg
Covers this model

Installation Guide

PRO 48 Installation Instructions16 pg
Covers this model

Parts Manual

Sub-Zero Parts Manual: 648PRO — Parts Manual9 pg
Covers this model

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Error codes (41)

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).05Refrigerator cabinet thermistor read open or shorted for 10+ seconds, or…06Refrigerator evaporator thermistor read open or shorted for 10+ seconds, or…07Freezer cabinet thermistor read open or shorted for 10+ seconds, or repeatedly…08Freezer evaporator thermistor read open or shorted for 10+ seconds, or…20Defrost under-heat with no voltage feedback through Gray/White wire at defrost…21Defrost overheat.22No voltage feedback through Gray/White wire at defrost start.23Defrost overheat with no voltage feedback through Gray/White wire at defrost…24Defrost under-heat.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 Switches are Disabled; Check Overhead Lighting.46Check Ice Accessory Wiring for Open Circuit.47Check Accent Lighting Wiring for Short Circuit (Zone 3).80Check Power to Compressor Controller for Zone X.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.

View all 41 error codes

90Change Main Control Board.91Primary on accent LED power supply; both bulbs must be burned out on drawers to…92Check Keypad Wiring.93Replace Keypad.94Check Wiring / Replace User Display (Zone 1 = Display #1, Zone 3 = Display #2).96Datalogger Malfunction.97Check Communications Cables / Connectors.98Brownout detected; Check Input Power Supply.EEThermistor error SERVICEService indicator flashing VACUUM CONDENSERExcessive compressor run time detected

Service modes (28)

Clear Error Codes / SERVICE AnnunciatorWith the problem corrected and unit ON, press and hold the Door Ajar Alarm Bell ON/OFF key for 15…
Diagnostic ModeWith unit ON, press and hold either COLDER key, then press the UNIT ON/OFF key, then release both…
Diagnostics - Activate Zone1) Initiate Service Mode
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 History1) Initiate Service Mode
Diagnostics - Self Test1) Initiate Service Mode (hold COLDER, press POWER, release both)
Diagnostics - Statistics1) Initiate Service Mode
Diagnostics - Thermistor ReadAfter initiating Service Mode, press ALARM once, press COLDER two (2) times, press ALARM
Diagnostics - Thermistors1) Initiate Service Mode
Manual Compartment Disable ModeSwitch unit OFF using UNIT ON/OFF key
Manual Component Activation ModeWith unit ON, press and hold the desired compartment COLDER key and the UNIT ON/OFF key for 10…
Manual DefrostWith ICE displayed on the LCD, press and hold the ICE key for 10 seconds
Manual Freezer Evaporator DefrostPress and hold the ICE key for five seconds, then release the key.
Manual Zone Disable ModeWith unit ON, press and hold the WARMER key for the zone being disabled, then press the POWER key…
Model Information1) Initiate Service Mode
Operational Status - Ice Maker1) Initiate Service Mode
Operational Status - Zone Status1) Initiate Service Mode
Sabbath ModeSwitch unit OFF using UNIT ON/OFF key
Service ModePress and hold any COLDER key, then press the POWER key, then release both keys
Service Mode (Main)Press and hold any COLDER key, then press the POWER key, then release both keys.
Show Room ModePress the UNIT ON/OFF key so OFF is displayed on the LCD
Showroom ModeSwitch unit OFF using UNIT ON/OFF key
Temperature Log Recall Mode (Compartment and Evaporator)With unit ON and in Diagnostic Mode, toggle to the desired thermistor temperature display, then…
Temperature Log Recall Mode (Compartment Only)With unit ON, press and hold the desired compartment WARMER key, then press the UNIT ON/OFF key…
Temperature Units Selection ModeWithin the first minute after switching the unit ON, press and hold the door ajar alarm bell key…
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 Information1) Initiate Service Mode

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