ErrorCodeDoctor
Panasonic Air Conditioner H24 error code
The H24 error means your Panasonic air conditioner detected a fault with the second indoor heat exchanger temperature sensor. This is the same type of fault as H23 but on the second sensor. Some models have multiple sensors on the indoor heat exchanger to monitor temperature at different points. A qualified technician will need to inspect and replace the faulty sensor.
Common causes
- Indoor heat exchanger temperature sensor 2 has malfunctioned or failed
- Wiring to the sensor is loose or damaged
- Sensor is giving an out-of-range reading
How to fix it
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1
Turn off the unit at the circuit breaker and wait 5 minutes then try restarting
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2
If H24 returns contact a qualified technician to inspect and replace the indoor heat exchanger temperature sensor 2
Related Panasonic Air Conditioner error codes
H24 error — frequently asked questions
What does the H24 error mean on a Panasonic air conditioner?
Indoor heat exchanger temperature sensor 2 has an abnormality
What causes the H24 error?
The H24 error is usually caused by: Indoor heat exchanger temperature sensor 2 has malfunctioned or failed; Wiring to the sensor is loose or damaged; Sensor is giving an out-of-range reading.
Can I fix the H24 error myself?
This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.
How much does it cost to fix the H24 error?
Fixing the H24 error on a Panasonic air conditioner typically costs $80–$200, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the H24 error?
We'd recommend addressing the H24 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.