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Error code reference

U-Line Refrigerator Error Code 1 Flash

Overflow protection circuit is open (only on P-60 pump equipped units) on CLR2060 new control board.

U-Line codesU-Line refrigerator codes

Overflow protection circuit is open (only on P-60 pump equipped units) on CLR2060 new control board.

First step from the service manual

Check P-60 drain pump and overflow protection circuit.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What 1 Flash means on a U-Line refrigerator

The 1 Flash error code on U-Line refrigerators equipped with the CLR2060 new control board indicates that the overflow protection circuit is open. This fault is specific to units that use a P-60 drain pump assembly. The overflow protection circuit monitors liquid levels in the drain pan or condensate collection area. When the circuit reads an open condition, the control board interprets this as a potential overflow risk and triggers the fault signal to alert the technician or user.

The P-60 pump is a condensate removal pump responsible for evacuating water that collects during normal refrigeration operation. The overflow protection component within this circuit is typically a float switch or sensor that closes the circuit under normal operating conditions. An open circuit reading means the control board is not receiving the expected closed-circuit signal from the overflow protection device, which can result from a failed float switch, a broken or disconnected wire in the circuit, or a corroded connector at the pump harness.

Diagnosing this fault requires physically inspecting the P-60 pump assembly, tracing the overflow protection circuit wiring from the pump back to the control board, and testing for continuity across the circuit. A disconnected harness plug, a stuck or failed float switch, or pump failure itself can all produce this open-circuit condition. Clearing this error typically requires resolving the underlying wiring or component fault rather than simply resetting the board.

Source: manufacturer service documentation.

Common causes of 1 Flash

  1. 01

    Failed or stuck float switch in overflow protection circuit

    Part replacement

    The float switch within the P-60 pump assembly is the most likely culprit. If the float switch fails internally or becomes stuck in the open position, the control board registers an open circuit and triggers the 1 Flash code. Test the switch for continuity to confirm failure.

  2. 02

    Disconnected or damaged wiring harness

    Wiring / connection

    A loose, corroded, or broken connector between the P-60 pump and the CLR2060 control board can create an open circuit reading. Inspect all connectors in the overflow protection circuit for secure seating, corrosion, or broken wire terminals.

  3. 03

    P-60 drain pump failure

    Part replacement

    If the P-60 pump itself has failed, the integrated overflow protection circuit may also lose continuity. Check the pump for normal operation and inspect for signs of burnout or mechanical failure.

  4. 04

    Corroded or damaged circuit terminals at the control board

    Wiring / connection

    Moisture exposure near the CLR2060 control board can cause corrosion at the overflow protection circuit terminals, creating an intermittent or permanent open condition. Inspect the board-side connector pins for oxidation or physical damage.

  5. 05

    Water intrusion causing short or open in circuit wiring

    Wiring / connection

    Condensate or water leaks near the pump assembly can damage the insulation on overflow circuit wires, eventually breaking continuity. Look for signs of moisture damage along the wire routing path from the pump to the control board.

See the test procedure for each cause

Frequently asked questions about 1 Flash

What does 1 Flash mean on a U-Line refrigerator?
The 1 Flash code on a U-Line refrigerator with the CLR2060 control board means the overflow protection circuit associated with the P-60 drain pump is reading as open. This is a fault specific to units equipped with the P-60 pump. The control board expects a closed circuit from the overflow protection component during normal operation, and an open reading triggers this warning. A technician should inspect the pump assembly and circuit wiring to locate the fault.
How do I fix the 1 Flash error on my U-Line refrigerator?
Start by inspecting the P-60 pump and the overflow protection circuit wiring for any disconnected connectors, broken wires, or corroded terminals. Test the overflow protection float switch for continuity using a multimeter. If the switch reads open when it should be closed, it will need to be replaced. If wiring is intact and the switch tests correctly, the P-60 pump itself may need to be replaced.
Will resetting the control board clear the 1 Flash error?
Resetting the CLR2060 control board is unlikely to permanently clear the 1 Flash error if the underlying cause has not been corrected. Because this code is triggered by an actual open-circuit condition in the overflow protection circuit, the fault will return as soon as the board re-evaluates the circuit. The physical cause must be diagnosed and repaired first.
Is the 1 Flash error on a U-Line refrigerator a safety concern?
The overflow protection circuit exists to prevent water from overflowing the drain pan, which could cause water damage or create a slip hazard. If the circuit is open and the P-60 pump is not operating correctly, there is a risk of uncontrolled condensate accumulation. It is advisable to address this fault promptly rather than continuing to run the unit without the protection circuit functioning.
How much does it cost to repair the 1 Flash error on a U-Line refrigerator?
Repair costs vary depending on the root cause. Reconnecting a loose wiring harness or cleaning corroded terminals may only involve a service call fee, typically in the range of $75 to $150. Replacing a failed float switch or P-60 pump will add parts costs, which can bring the total repair estimate to anywhere from $150 to $400 or more depending on the specific component and labor rates in your area.

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