P1
Royal Clima
High or Low AC Voltage Protection
Indoor unit shows P1, unit may stop during operation, especially under heavy load.
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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
Mains voltage outside specified range, Loose supply wiring, Faulty voltage detection circuit on PCB, Oversized extension cords or undersized wiring
How to Fix / Troubleshooting
Safety first: Turn OFF the breaker before inspecting wiring.
- Step 1 – Check supply voltage: Have a qualified person measure the mains voltage. If it is too high or low, contact your power provider or electrician.
- Step 2 – Inspect wiring: Ensure the Royal Clima unit is connected with appropriately sized cables directly to a dedicated breaker, not via extension cords.
- Step 3 – Use stabilizer if needed: In areas with unstable voltage, install a suitable voltage stabilizer.
When to call a technician: If voltage is normal but P1 persists, the PCB voltage sensing circuit may be faulty.
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Repair Difficulty
Medium
3/5
Required Part
Power Filter Board
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