Error code reference

Sub-Zero Freezer Error Code 24

Zone X Defrost Heater resistance out of specification

SourceSub-Zero Pro-Series Freezer - Service Manual (Model 648PRO)p. 3-30

Diagnostic procedure

The full 24 procedure

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MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check Zone X Defrost Heater Ohms

SourceSub-Zero Pro-Series Freezer - Service Manual (Model 648PRO)p. 3-30

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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

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 24 procedure

Where this code is documented

Models covered by the manuals that document this code

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