ErrorCodeDoctor
Panasonic Air Conditioner H37 error code
The H37 error means your Panasonic air conditioner detected a fault with the outdoor liquid pipe temperature sensor. This sensor monitors the temperature of the liquid refrigerant in the outdoor pipe to help control the expansion and condensation process. When it fails the unit cannot manage the refrigerant cycle accurately and stops operating. A qualified technician will need to inspect and replace the sensor.
Common causes
- Outdoor liquid pipe temperature sensor 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 H37 returns contact a qualified technician to inspect and replace the outdoor liquid pipe temperature sensor
Related Panasonic Air Conditioner error codes
H37 error — frequently asked questions
What does the H37 error mean on a Panasonic air conditioner?
The outdoor liquid pipe temperature sensor has an abnormality
What causes the H37 error?
The H37 error is usually caused by: Outdoor liquid pipe temperature sensor has malfunctioned or failed; Wiring to the sensor is loose or damaged; Sensor is giving an out-of-range reading.
Can I fix the H37 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 H37 error?
Fixing the H37 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 H37 error?
We'd recommend addressing the H37 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.