Panasonic · Air Conditioner

Panasonic Air Conditioner H23 error code

Difficulty: Hard · Cost: $80–$200 · Duration: Requires professional service

The H23 error means your Panasonic air conditioner detected a fault with the first indoor heat exchanger temperature sensor. This sensor monitors the temperature of the indoor evaporator coil to regulate cooling and heating performance. When it develops a fault the unit cannot accurately control the refrigerant cycle and stops operating. A qualified technician will need to inspect and replace the sensor.

Common causes

Indoor heat exchanger temperature sensor 1 has malfunctioned or failed
Wiring to the sensor is loose or damaged
Sensor is giving an out-of-range reading

How to fix it

1

Turn off the unit at the circuit breaker and wait 5 minutes then try restarting
2

If H23 returns contact a qualified technician to inspect and replace the indoor heat exchanger temperature sensor