Washer shows E66 and does not heat, often after a loud click or pop.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Burnt heater relay contacts, Failed relay coil, PCB track damage, Overcurrent from failing heater

Safety: Disconnect power before accessing the control board.

Check heater: Verify the heating element is not shorted or drawing excessive current. Replace if faulty.
Inspect PCB: Look for burnt areas around the heater relay. In most cases, the entire control board must be replaced.

Due to mains voltage and current involved, E66 repairs should be carried out by a professional.

Professional Required 5/5

Main Control Board

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