Whirlpool Air Conditioner Error Code E5

E5 indicates a timed ice-making fault where the ice storage temperature is acceptable but the ice mold has stayed in its freeze state longer than the control system allows. The most likely cause is an anomaly with the ice maker mold thermistor, which monitors the temperature of the mold throughout the freeze and harvest cycle. The unit flags E5 when the thermistor signal suggests the mold is not progressing through its cycle normally.

The E5 error is not typically a safety hazard in terms of electrical or fire risk. It is an ice-making system fault that disrupts ice production but does not affect the core cooling function of the unit. You can continue using the air conditioning function while the ice maker fault is being diagnosed and repaired.

A power reset may temporarily clear the E5 code, but if the underlying cause such as a faulty thermistor or damaged wiring has not been addressed, the error will return once the ice-making cycle runs again. Resetting is useful for confirming whether the fault is intermittent, but it is not a substitute for diagnosing and correcting the root cause.

Start by inspecting and testing the ice maker mold thermistor using a multimeter to check its resistance output. Also examine the wiring harness and connectors between the thermistor and the control board for corrosion or damage. If the thermistor tests faulty, replacing it is the most common fix. If the sensor and wiring are intact, further diagnosis of the harvest heater and motor is needed.

If the repair requires only a thermistor replacement, parts and labor typically range from around $50 to $150, depending on part availability and service rates in your area. If the harvest heater, motor, or control board also needs replacement, total repair costs could range from $100 to $300 or more. Getting a diagnostic estimate from a certified technician before committing to parts is recommended.