Climadiff Fan Control / Continuous Fan Operation

Interior fan runs constantly even when the compressor is off.

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

Control board configured for continuous circulation, Stuck fan relay or triac, Shorted fan wiring, Incorrect sensor reading forcing fan on

Safety: Unplug the unit before working on the fan or control board.

Check user settings: Some Climadiff models allow continuous fan mode; consult the manual to see if this is enabled.
Inspect wiring: Ensure the fan is wired correctly to the PCB and not bypassed.
Test control output: If the fan receives power even when the board should have it off, the control relay/triac may be stuck and the PCB will need replacement.
Sensor check: Incorrect temperature readings can cause the board to keep the fan on; verify sensor operation.

Medium 3/5

Main Control Board

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