F3
Camry Humidifier Ultrasonic Transducer / Heater Drive Fault

Humidifier mode error F3, fan may run but no mist output

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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 ultrasonic transducer disc, Burnt driver circuit on humidifier PCB, Loose wiring to humidifier module

How to Fix / Troubleshooting

Safety: Unplug the Camry unit before opening the humidifier section.

Steps:

  • 1. Check water and scale: Remove the humidifier tank and inspect the ultrasonic transducer or heater chamber for heavy scale. Clean gently with white vinegar and a soft cloth, then rinse thoroughly.
  • 2. Inspect transducer: Look for cracks or discoloration on the ultrasonic disc. A visibly damaged disc must be replaced.
  • 3. Check wiring: Ensure the wires from the main PCB to the humidifier module are firmly connected and not corroded.
  • 4. Replace module: If F3 persists and the disc appears damaged or the driver board shows burn marks, replace the complete Camry ultrasonic humidifier module or heater assembly, depending on model.

Note: Always use the correct replacement module specified for your Camry model to ensure proper drive frequency and safety.

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Repair Difficulty

Medium 3/5

Required Part

Ultrasonic Humidifier Module
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