Error code reference

Sub-Zero Refrigerator Error Code 24

Defrost under-heat condition detected.

SourceSub-Zero 700 Series Refrigerator - Service Manualp. 8-4

Sub-Zero codes Sub-Zero refrigerator codes

Diagnostic procedure

The full 24 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

With cold evaporator (<10°F), initiate Manual Defrost, then Diagnostic Mode; if evaporator temp exceeds 45°F, error is false; otherwise check Blue wire at P2 and Grey/White wire at J2-3.

SourceSub-Zero 700 Service Manual: Service Manualp. 3-20, 8-4

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

25 manuals in the MyPros+ library document this code for Sub-Zero refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full 24 procedure

Where this code is documented

Models covered by the manuals that document this code

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