Hoshizaki Hard Starting / Short Cycling Compressor

Clicking sound; compressor tries to start but shuts off repeatedly.

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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

Weak start capacitor or relay, Low supply voltage, High head pressure from a dirty condenser, Failing compressor.

How to Fix / Troubleshooting

Safety First: Disconnect power before accessing any electrical components. Capacitors can hold a charge, so discharge them safely.

  • Check supply voltage: Verify that the voltage at the unit is within specifications under load.
  • Clean condenser: Reduce head pressure by thoroughly cleaning the condenser coil and ensuring proper airflow.
  • Test start components: Remove and test the start capacitor with a capacitance meter. Replace it if it is out of tolerance. Replace a burnt or noisy start relay.
  • Allow cooling: Allow the compressor to cool for 30–60 minutes, then retry.

When to call a technician: If the compressor continues to short cycle with new start components and proper voltage, it may be mechanically failing.

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Repair Difficulty

Hard 4/5

Required Part

Compressor Start Capacitor
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