Indoor unit shows P1; unit may stop and restart frequently.

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.

Possible Causes

Utility voltage outside acceptable range, Loose electrical connections, Undersized wiring causing voltage drop, Faulty voltage detection circuit on PCB

How to Fix / Troubleshooting

Safety: Electrical measurements should be done by qualified personnel.

Step 1 – Measure voltage: Confirm the supply voltage at the outdoor unit is within Senville's specified range.
Step 2 – Inspect wiring: Check for loose lugs, corroded connections, or undersized wire runs.
Step 3 – Correct supply issues: If house voltage is unstable, consult an electrician or utility provider.
Step 4 – PCB check: If supply is stable but P1 persists, the voltage sensing circuit on the PCB may be faulty.

Repair Difficulty

Hard 4/5

Required Part

Outdoor Main Control Board (PCB)

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