H3
Black+Decker
Compressor Overload Protection
Display shows H3 and the compressor does not start or shuts off 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
Overheated compressor, Low supply voltage, Blocked condenser airflow, Failing compressor drawing high current
How to Fix / Troubleshooting
Safety: Unplug the unit. Do not attempt to bypass compressor overloads.
- Allow cool-down: Let the unit sit unplugged for at least 30 minutes to allow the compressor overload to reset.
- Check power supply: Plug the unit directly into a dedicated outlet. Avoid extension cords. If lights dim when the compressor tries to start, have an electrician check the circuit.
- Clean condenser and ensure ventilation: Clean the rear coil and ensure adequate clearance around the unit.
- Restart and observe: After cool-down and cleaning, restart the unit. If H3 returns immediately, the compressor or control board may be faulty and requires professional service.
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Repair Difficulty
Professional Required
5/5
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