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P1

P1 - Power voltage imbalance or inverter PCB (Outdoor Unit)

Daikin · Simple Self Diagnosis by Malfunction Code | Daikin

What does P1 mean?

This error relates to an imbalance in the power voltage supplied to the unit or a fault with the inverter PCB.

Common Causes

  • Unstable incoming voltage
  • Faulty inverter PCB
  • Wiring issues

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the power to the unit at the breaker.

  2. 2

    Check that the main power supply to your building is stable.

  3. 3

    Restore power and see if the error clears.

  4. 4

    If the problem persists, call a technician.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

6-06-0 - External protection device activated (Heat reclaim ventilator)6-16-1 - Malfunction of PCB (Heat reclaim ventilator)6-26-2 - Ozone density abnormal (Heat reclaim ventilator)
Source: Simple Self Diagnosis by Malfunction Code | Daikin
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