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Error code reference
Sub-Zero Refrigerator Error Code 30 9 01
Bulk ice switch stuck closed; pressed or closed for more than five seconds with door closed.
SourceSub-Zero Service Manual: ICBBI-42UFDID: Service Manualp. 157
Diagnostic procedure
The full 30 9 01 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
1
First diagnostic step
Inspect bulk ice switch and wiring.
SourceSub-Zero Service Manual: ICBBI-42UFDID: Service Manualp. 157
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
1 manual in the MyPros+ library documents this code for Sub-Zero refrigerator.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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