Camry Fan Does Not Stop / Control Logic Issue

Humidifier or dehumidifier fan runs continuously even when target humidity is reached

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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

Fan set to continuous mode, Stuck fan relay on main PCB, Shorted triac or transistor driving fan, Faulty humidity sensor

How to Fix / Troubleshooting

Safety: Unplug the unit before opening the control compartment.

Steps:

  • 1. Check settings: Some Camry models allow continuous fan operation. Verify the fan mode in the user settings.
  • 2. Confirm humidity: Use an external hygrometer to ensure the room is actually at or below the setpoint.
  • 3. Inspect main PCB: If the fan should stop but does not, inspect the main PCB for a stuck relay or burnt triac controlling the fan motor.
  • 4. Replace PCB: If the fan drive component is faulty, replace the main control PCB.
  • 5. Sensor check: If the unit never recognizes that humidity is reached, test and replace the humidity sensor module if needed.

Note: Continuous fan operation is not dangerous but may waste energy and cause unnecessary wear.

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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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