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Error code reference
U-Line Ice Maker Error Code P1
Pump circuit open: restricted drain line or failed drain pump.
SourceU-Line Nugget Ice Machine - Service Manual: UHNB115/UHNP115p. 34, 51, 53
Diagnostic procedure
The full P1 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
Check drain pump wiring and connections; verify drain line is not restricted.
SourceU-Line 15" Nugget Ice Machine - Service Manual (UONB115/UONP115)p. 29, 48, 50
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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