U-Line Nugget Ice Maker Code P1: Pump Circuit Open

What P1 means

On U-Line Outdoor Collection nugget ice makers such as the UONB115, P1 reports an open pump circuit. The control expects to see the water pump circuit complete, and it reads the circuit as open instead. You see P1 on the display and ice making stops, because the machine cannot move water without its pump. The clear ice UCLR1215 prints the same message as Pi, which has its own page.

Common causes of P1

A restricted drain line holding water back
A pump that has failed
An open pump circuit the control cannot read as complete

✓ One safe check you can try

1. Switch the ice maker off and let it sit for a few minutes. 2. Look at the drain line behind the unit and straighten any kink. 3. Make sure nothing is pressing on the drain hose. 4. Switch the ice maker back on and watch the display. 5. If P1 returns, stop and call us.

! Why to stop there

A blocked drain and a dead pump look identical from the outside
Running the machine while P1 shows can leave water sitting where it should not
We tell you the price before any work and cover the repair for 30 days

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Ice Machine codes

Ice / Off scrolling with SPU-Line Echelon 2000 Message "Ice / Off scrolling with SP": ice maker off mode CLU-Line Echelon 2000 Message "CL": self-cleaning cycle running CLR2060 one flashU-Line CLR2060 One flash: overflow protection circuit open CLR2060 two flashesU-Line CLR2060 Two flashes: open thermistor or too warm CLRCO2075 LED 2 flashingU-Line CLRCO2075 LED 2 flashing: open thermistor CLRCO2075 LED 3 flashingU-Line CLRCO2075 LED 3 flashing: drain pump blocked or overloaded E10U-Line Nugget Ice Machine Code 10: Door 2 Open E11U-Line Nugget Ice Machine Code 11: Reservoir Water Level High

P1P1 questions

What does P1 mean on my nugget ice maker?

P1 means the control sees the pump circuit as open. The machine cannot circulate water, so it stops making ice and holds the code on the display until the circuit reads normal.

Is Pi the same as P1?

Pi is how the clear ice UCLR1215 prints the same pump circuit open message. On the nugget UONB115 the display shows P1. Both point to the water pump circuit.

Can a clogged drain cause P1?

Yes. A restricted drain line is one of the two conditions tied to this code, the other being a failed pump. We check the drain path first, since it is the simpler of the two to clear.