CodeRegistry
Brands
  1. Home
  2. Daikin
  3. Simple Self Diagnosis by Malfunction Code | Daikin
  4. P0
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

P0

P0 - Shortage of refrigerant amount (thermal storage unit) (Outdoor Unit)

Daikin · Simple Self Diagnosis by Malfunction Code | Daikin

What does P0 mean?

The thermal storage unit indicates a low level of refrigerant, possibly due to a leak.

Common Causes

  • Refrigerant leak
  • Insufficient refrigerant charge
  • Faulty sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the unit.

  2. 2

    Inspect visible refrigerant lines for signs of oil leaks.

  3. 3

    Turn the unit back on.

  4. 4

    If the error persists, contact a technician for a refrigerant leak check.

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
Open Manual (Page 1)Search more codes in this manual