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Error code reference
Sub-Zero Refrigerator Error Code Slow flash
Control board light slow flash indicates a thermistor problem (open or disconnected) on UC-15I ice machine.
SourceSub-Zero Wolf Refrigerator - Training Manual: 700 Series Updatesp. 68
Diagnostic procedure
The full Slow flash 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
Verify liquid line thermistor is connected to control board and is securely attached to liquid line and insulated. Refer to Resistance chart and Ohm thermistor.
SourceSub-Zero Wolf Refrigerator - Training Manual: 700 Series Updatesp. 68
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.
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