Philips Compressor Not Starting

Dehumidifier fan runs but compressor never starts; air is not noticeably warmer at the outlet.

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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 compressor start relay/PTC, Open compressor thermal protector, Faulty compressor windings, Control board not sending start signal

How to Fix / Troubleshooting

Safety: Unplug the unit. Compressor circuits carry high voltage and can store charge in capacitors.

  • Listen for clicks: When the unit is turned on (briefly), listen for a click from the compressor area. Then unplug again.
  • Check ambient conditions: Ensure the set humidity is below the room humidity so the compressor is actually requested to run.

Testing compressor windings and start components requires a multimeter and knowledge of refrigeration systems. This work should be left to a professional technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Compressor Start Relay / PTC
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