H4
Beko
Inverter Module / IPM Protection
Indoor unit shows H4; unit may not start or may stop shortly after startup.
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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
Overheating inverter power module, Poor heat dissipation on outdoor PCB, Shorted compressor windings, Faulty outdoor main PCB
How to Fix / Troubleshooting
Danger: Inverter boards carry lethal voltages even after power is removed. Do not touch capacitors or power components.
- 1. Ensure ventilation: Confirm that the outdoor unit has adequate airflow around it and that vents on the control box are not blocked.
- 2. Clean outdoor unit: Remove dust and debris from around the control box area to improve cooling.
- 3. Power reset: Turn off power for at least 10 minutes to allow capacitors to discharge and the module to cool, then restart.
- 4. If H4 recurs: The inverter module or compressor may be faulty. Professional diagnosis and likely PCB replacement are required.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Inverter Power Module (Outdoor Main PCB)
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