On U-Line Outdoor Collection nugget ice makers such as the UONB115 and UONP115, P1 means the pump circuit is open. The control cannot read the water pump circuit as complete, so it cannot move water through…
On U-Line Outdoor Collection nugget ice makers such as the UONB115 and UONP115, P1 means the pump circuit is open. The control cannot read the water pump circuit as complete, so it cannot move water through the machine. You see P1 and ice making stops. Outdoor units sit in changing weather, so the drain line and its fittings deserve a look.
1. Switch the unit off for a few minutes. 2. Follow the drain line and straighten any kink. 3. Check that the drain outlet is clear of leaves or debris. 4. Switch the unit on and watch the display. 5. If P1 returns, leave it off and call us.
P1 means the pump circuit is open. The control cannot confirm water circulation, so it halts ice making and shows P1 until the circuit reads complete.
A drain outlet blocked by leaves or debris is something you can check safely. A restricted drain line is tied to this code, so clearing it can help before we test the pump.
The nugget models show P1, and the clear ice UCLR1215 prints it as Pi. Both describe an open pump circuit.
A technician diagnoses it on site and gives you the price in writing before any work starts.
