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Error code reference

GE Ice Maker Error Code LED flashes 5 times

Evaporator thermistor not detected during Clean/Diagnostics cycle.

GE codesGE ice maker codes

Evaporator thermistor not detected during Clean/Diagnostics cycle.

First step from the service manual

Check evaporator thermistor connection and test thermistor resistance.

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

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What LED flashes 5 times means on a GE ice maker

A 5-flash LED sequence on a GE ice maker indicates that the control board failed to detect a valid signal from the evaporator thermistor during a Clean or Diagnostics cycle. The evaporator thermistor is a temperature-sensing resistor mounted on or near the evaporator assembly. It continuously reports evaporator temperature to the control board so the ice maker can regulate freeze and harvest cycles accurately. When the board cannot read that sensor during a diagnostic routine, it flags the fault with this specific flash code.

The most common cause is a loose or corroded connector at either the thermistor end or the control board end of the wiring harness. Beyond connection issues, the thermistor itself may have drifted out of its acceptable resistance range or failed entirely. A thermistor that reads open or short circuit will not produce a usable signal, triggering the fault. Checking thermistor resistance with a multimeter and comparing it to the expected value for the current ambient temperature is the recommended first diagnostic step.

Wiring damage between the thermistor and the control board can also produce this fault, including pinched wires, broken conductors, or insulation wear that causes intermittent grounding. In less common cases, the control board itself may be unable to process the thermistor input correctly even when the sensor and wiring test good. Systematic diagnosis should confirm the sensor, the wiring harness, and the board before any parts are replaced.

Source: manufacturer service documentation.

Common causes of LED flashes 5 times

  1. 01

    Loose or disconnected thermistor connector

    Wiring / connection

    The wiring connector at the evaporator thermistor or at the control board may have worked loose over time. Inspect both ends of the thermistor harness and reseat any connector that shows signs of looseness or corrosion.

  2. 02

    Failed evaporator thermistor

    Part replacement

    The thermistor itself may have failed open or short circuit, producing a resistance value outside the acceptable range for the control board. Test the thermistor resistance with a multimeter and compare the reading to the expected value at the current ambient temperature.

  3. 03

    Damaged wiring harness

    Part replacement

    Wires between the thermistor and the control board can suffer pinching, breaks, or insulation wear, especially near mounting points or moving components. Visually trace the harness and use a continuity test to identify any open or shorted conductors.

  4. 04

    Corroded connector terminals

    Wiring / connection

    Moisture inside the ice maker compartment can cause the thermistor connector pins or terminals to oxidize, increasing resistance in the circuit enough to simulate an open sensor. Inspect the connector terminals closely and clean or replace the connector if corrosion is present.

  5. 05

    Faulty control board

    Part replacement

    If the thermistor and all wiring test correctly, the control board's thermistor input circuit may have failed. This is the least common cause and should only be considered after the sensor and harness have been ruled out.

See the test procedure for each cause

Frequently asked questions about LED flashes 5 times

What does LED flashes 5 times mean on a GE ice_maker?
Five LED flashes on a GE ice maker indicate that the control board could not detect the evaporator thermistor during a Clean or Diagnostics cycle. The evaporator thermistor is a temperature sensor mounted on the evaporator assembly that the board uses to monitor and control the ice-making process. This fault must be resolved before the unit will operate normally.
How do I fix the 5-flash error on my GE ice maker?
Start by checking the wiring connector at the evaporator thermistor and at the control board, reseating any loose connections. Next, test the thermistor resistance with a multimeter to determine whether the sensor is within its acceptable range. If the connector and sensor both check out, inspect the wiring harness for damage and test for continuity. Replace whichever component the testing identifies as faulty.
Is it safe to keep using my GE ice maker when it shows this error?
It is not recommended to continue using the ice maker while this fault is active. Without a functioning evaporator thermistor, the control board cannot properly monitor evaporator temperature, which can disrupt freeze and harvest cycles and potentially cause the unit to operate outside its intended parameters. Resolving the fault before resuming use is the safest approach.
Will resetting my GE ice maker clear the 5-flash error code?
A reset may temporarily clear the displayed fault, but the error will return during the next Clean or Diagnostics cycle if the underlying problem has not been fixed. The control board checks for the evaporator thermistor signal each time that routine runs, so a permanent fix requires repairing or replacing the faulty component rather than relying on a reset.
How much does it cost to repair a GE ice maker with the 5-flash evaporator thermistor error?
Repair costs depend on which component has failed. A replacement evaporator thermistor is generally an inexpensive part, typically in the range of $15 to $50, while a replacement control board can cost significantly more, often between $80 and $200 or higher depending on the model. If you hire a technician, expect to add a service call fee and labor costs on top of part prices.

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