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Model reference

Sub-Zero 642

Refrigerator

4 documents12 error codes21 service modes

Available documentation

Service Manual

  • 600 Series Technical Service/Training Manual Addendum144 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
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Error codes (12)

CodeMeaning
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.EEThermistor errorSERVICEService indicator flashingVACUUM CONDENSERExcessive compressor run time detected

Service modes (21)

  • 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["Unit must be ON.","Press and hold either COLDER key.","Then press the UNIT ON/OFF key.","Release…
  • Diagnostic ModeWith unit ON, press and hold either COLDER key, then press the UNIT ON/OFF key, then release both…
  • 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_compartment_disable["Switch unit OFF using the UNIT ON/OFF key.","With unit switched OFF, press and hold the WARMER…
  • manual_component_activation["Unit must be ON.","Press and hold the desired compartment COLDER key and the UNIT ON/OFF key for…
  • manual_freezer_evaporator_defrost["Press and hold the ICE key for five seconds, then release."]
  • Sabbath ModeSwitch unit OFF using UNIT ON/OFF key
  • sabbath_mode["Switch unit OFF using the UNIT ON/OFF key.","With unit switched OFF, press and hold the UNIT…
  • Show Room ModePress the UNIT ON/OFF key so OFF is displayed on the LCD
  • Showroom ModeSwitch unit OFF using UNIT ON/OFF key
  • showroom_mode["Switch unit OFF using the UNIT ON/OFF key.","With unit switched OFF, press and hold either pair…
  • 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_log_recall_compartment_and_evaporator["Begin with the unit ON and in Diagnostic Mode.","Toggle through readings until the desired…
  • temperature_log_recall_compartment_only["Begin with the unit ON.","Press and hold the desired compartment WARMER key.","Then press the…
  • temperature_units_selection["Must be performed within the first minute after switching the unit ON.","Press and hold the door…

Full entry steps, exit procedures, and test sequences are available in Max.

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