Error code reference

Sub-Zero Freezer Error Code 23

Defrost overheat with no voltage feedback through gray/white wire at defrost start.

SourceSub-Zero 600-3 Series Freezer - Full Service Manualp. 3-21

Diagnostic procedure

The full 23 procedure

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MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check for proper mounting and location of freezer evaporator thermistor and defrost heater. Remount correctly. Check for correct wire connection at control board, Blue wire at E2. Check for electrical short of Blue wire to another circuit.

SourceSub-Zero 600-3 Series Freezer - Full Service Manualp. 3-21

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More steps, wiring diagram references, and verified part numbers

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Where this code is documented

9 manuals in the MyPros+ library document this code for Sub-Zero freezer.

Models covered by the manuals that document this code

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The full 23 procedure

Where this code is documented

Models covered by the manuals that document this code

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