H3
Danby
Compressor Overload / Overheat Protection
Display shows H3, compressor does not run or shuts down quickly.
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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
Dirty condenser coil, Failed condenser fan motor, High ambient temperature and poor ventilation, Failing compressor drawing high current
How to Fix / Troubleshooting
Safety: Unplug the unit and allow it to cool before servicing.
Steps:
- 1. Improve ventilation: Ensure the unit has adequate clearance and is not installed in a confined space. For portables, verify the exhaust hose is not kinked and is properly vented outdoors.
- 2. Clean condenser: Remove the rear cover and clean dust and lint from the condenser coil with a soft brush or vacuum.
- 3. Check condenser fan: Confirm the fan starts whenever the compressor is commanded on. If the fan is slow, noisy, or not running, replace the condenser fan motor.
- 4. Electrical checks (advanced): Measure compressor current draw with a clamp meter and compare to the nameplate rating. Excessive current indicates a failing compressor or start components.
- 5. Persistent H3: If H3 recurs after cleaning and fan repair, the compressor may be failing and requires professional diagnosis.
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Repair Difficulty
Hard
4/5
Required Part
Condenser Fan Motor
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