E90
Comfee Configuration / Software Communication Error

Washer shows E90 and becomes unresponsive or stuck; may occur after a power outage.

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Safety Warning

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.

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Possible Causes

Corrupted control board configuration, Loose interface cable, Power surge, Incompatible replacement PCB

How to Fix / Troubleshooting

Safety first: Unplug the washer before accessing electronics.

  • Hard reset: Disconnect power for at least 15 minutes, then plug back in and attempt to enter a basic cycle.
  • Check interface cable: Remove the control console and reseat the ribbon cable between the display board and main PCB.
  • Environment: Ensure the washer is not exposed to excessive moisture at the control panel, which can cause intermittent shorts.
  • Board replacement: If E90 persists, the main PCB may need to be replaced and configured according to Comfee service procedures. This is best done by an authorized technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board (PCB)
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