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Error code reference
U-Line Ice Maker Error Code 12
Water level low: unit is not getting enough water into the reservoir.
SourceU-Line 15" Nugget Ice Machine - Service Manual (UONB115/UONP115)p. 29, 48, 50
Diagnostic procedure
The full 12 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 water supply is connected and turned on; go to component testing and turn on fill valve, verify 120V at the valve.
SourceU-Line UHNP315 Nugget Ice Machine - Service Manualp. 28, 49, 51
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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