Hitachi
Short Cycling – Compressor Protection
Freezer starts then stops after a few seconds, repeating cycle
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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 start relay or overload, Low supply voltage, Overheated compressor, Internal compressor mechanical fault
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing the compressor area.
- Check supply voltage: Ensure the freezer is on a dedicated circuit with stable voltage.
- Inspect start relay and overload: Replace the Hitachi start device if it is clicking repeatedly or shows signs of overheating.
- Allow cooling: Let the compressor cool for 1–2 hours with the unit unplugged, then retry.
- Compressor test: Measure winding resistance; abnormal readings indicate a failing compressor.
- Technician service: Persistent short cycling with a hot compressor usually requires compressor replacement by a professional.
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Repair Difficulty
Professional Required
5/5
Required Part
Compressor Start Relay and Overload Protector
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