Error code reference
Panasonic Air Conditioner Error Code H37
Outdoor liquid pipe temperature sensor abnormality
Outdoor liquid pipe temperature sensor abnormality — sensor open or short circuit detected continuously for 5 seconds; cooling protection operation only.
First step from the service manual
Check the connector connection of the outdoor liquid pipe temperature sensor.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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Get the full diagnostic procedure for H37.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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