E7
Klarstein
Compressor Start / Overload Protection Error
E7 error appears; compressor does not start, fan may run intermittently.
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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, Overheated compressor, Low mains voltage, Internal compressor fault
How to Fix / Troubleshooting
Safety first: Unplug the unit before accessing the compressor compartment. The compressor and pipes can be very hot.
- Allow cooling: If the unit has been running continuously, unplug it and let it cool for 30–60 minutes. Overheat protection may reset after cooling.
- Check ventilation: Ensure the rear and sides are not blocked and that the condenser fan is working properly.
- Listen for start attempts: Plug in and start the unit. If you hear a click and then a hum followed by another click, the start relay or compressor may be failing.
- Inspect start relay (advanced): With power disconnected, remove the cover on the compressor terminals and check the start relay/overload device for burn marks or rattling pieces. Replace if damaged.
Compressor electrical and refrigerant issues should be handled by a qualified refrigeration technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Start Relay / Overload Protector
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