F70
Kenmore
Central Control Unit (CCU) Heartbeat Failure
Washer shows F70; console may be unresponsive or freeze.
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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
Failed main control board, failed user interface board, communication harness issue, power surge damage
How to Fix / Troubleshooting
Safety First: Disconnect power before opening the console.
Steps:
- Power reset: Unplug for 5–10 minutes, then reconnect and test.
- Access controls: Remove top panel and console to access CCU and UI boards.
- Reseat connectors: Unplug and reconnect all harnesses between CCU and UI.
- Inspect boards: Look for burnt or damaged components. Replace any suspect board, starting with the main control.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (CCU)
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