F6
Royal Clima Compressor Current Sensing / IPM Protection Fault

Indoor unit shows F6, unit may run at reduced capacity or stop 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

Abnormal compressor current draw, Faulty current sensor on outdoor PCB, Defective inverter IPM module, Shorted compressor windings

How to Fix / Troubleshooting

Safety first: Do not attempt to measure compressor current without proper tools and training. Turn OFF the breaker before inspection.

  • Step 1 – Visual inspection: Check outdoor PCB for burnt components or discoloration around the IPM module.
  • Step 2 – Listen for abnormal sounds: When briefly testing, listen for loud humming or clicking from the compressor. If present, shut down immediately.
  • Step 3 – Do not bypass protections: Never attempt to bypass F6 or short safety circuits.

When to call a technician: F6 requires professional diagnosis with specialized equipment. Contact an authorized Royal Clima service center.

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Repair Difficulty

Professional Required 5/5

Required Part

Outdoor Inverter PCB
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