Hearing your dehumidifier click on, run for a moment, then click off again and again? That short-cycling clicking usually comes from the compressor overload protector tripping, and a few conditions commonly cause it.
Here is why the compressor clicks and how to fix it.
This article will teach you:
- What the clicking means
- Why the overload trips
- What to check first
- When a part has failed
Why the Compressor Clicks
- An overload protector tripping on the compressor.
- Rapid restarts before internal pressure equalizes.
- A very cold room stressing the compressor.
- A failing start relay or capacitor.
What You’ll Need
- Your owner’s manual
- A thermometer
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How to Fix a Clicking Compressor
- Wait before restarting. After turning it off, wait several minutes before powering on so pressure equalizes.
- Check the room temperature. Run it within the recommended temperature range.
- Give it space. Keep the unit clear of walls so it does not overheat.
- Listen for a pattern. Regular click-and-stop cycles point to the overload or relay.
Pro Tip: Never rapidly switch a dehumidifier off and on. The compressor needs a few minutes for pressure to equalize, and restarting too soon trips the overload and causes the clicking.
Didn't fix it? Ask a technician on the AppliancePartsPros forum.
Post your model number, the symptom, and what you've already tried. Appliance techs and experienced DIYers answer for free, usually the same day.
Ask the forum →80,000+ solved repair threads · no account needed to readWhen to Look a Little Deeper
Because short-cycling ties to run behavior, it helps to check related issues, and reviewing a fan that will not run, a unit that runs constantly, or a unit not collecting water can reveal the cause.
Because efficiency and setup matter, comparing portable versus whole-house dehumidifiers and sizing it to the right size for your space can reduce stress on the compressor.
When to Call a Pro
If restarts are spaced out and the room is warm enough but it still clicks and stops, the start relay, capacitor, or compressor needs a technician. That is sealed-system work.
Related guides
- Bathroom Fan Clicking or Rattling: Finding the Cause
- Whirlpool Dryer Cycling Thermostat Troubleshooting and Easy Fix
Wrapping Up
Clicking is usually the overload tripping. Here’s the recap:
- Wait minutes before restarting.
- Run it in the right temperature range.
- Give the unit space to breathe.
- Call a pro for relay or compressor faults.
Space out restarts first, and the clicking often stops. You’ve got this.
When the test points to the part, shop dehumidifier parts for your model and confirm the fit with the full model number before ordering.
Still stuck after this guide?
Two free options: post your model number and symptom on the forum, or search the model number in the shop to see every part that fits.
