Washer shows E20 and may not drain or spin; often associated with pressure switch disagreement.

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.

Possible Causes

Primary and secondary pressure switches disagreeing, Crossed or misrouted pressure hoses, Faulty pressure switch, Control misinterpretation of level inputs

How to Fix / Troubleshooting

Safety first: Disconnect power before working on level sensors.

Verify hose routing: Ensure each pressure switch is connected to the correct air dome or port as per UniMac schematic. Correct any crossed hoses.
Inspect hoses for leaks: Replace any hose that is cracked or loose, as air leaks cause incorrect readings.
Test switches: Check each pressure switch individually with a multimeter while applying air pressure. Replace any that do not switch reliably.
Control board: If sensors and hoses are correct, the control may be faulty and require replacement.

Repair Difficulty

Hard 4/5

Required Part

Water Level Pressure Switch

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