P1
Klimaire
High/Low Voltage Protection
Indoor unit shows P1 and operation is limited or stopped.
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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
Supply voltage outside allowable range, Loose neutral or ground, Undersized wiring causing voltage drop, Utility power fluctuations
How to Fix / Troubleshooting
Safety first: Electrical measurements should be performed by a qualified person.
- Step 1 – Measure line voltage: Confirm the voltage at the Klimaire unit matches the nameplate rating and stays within ±10% during operation.
- Step 2 – Inspect wiring: Check for loose connections at the breaker, disconnect, and unit terminals. Tighten as needed.
- Step 3 – Correct wiring size: Ensure the branch circuit wire gauge meets Klimaire installation requirements for the unit's amperage and distance.
- Step 4 – Address supply issues: If utility voltage is unstable, consult an electrician about installing a voltage stabilizer or dedicated circuit.
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Repair Difficulty
Hard
4/5
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