Panasonic Air Conditioner Error Codes

36 error codes for Panasonic air conditioner models. Each links to the full diagnostic procedure from the service manual.

CodeDescription

F114-way valve switching abnormality F17Indoor standby units freezing abnormality F90Power factor correction (PFC) circuit protection F91Refrigeration cycle abnormality F93Compressor abnormal revolution F94Compressor discharge overshoot protection F95Outdoor cooling high pressure protection F96Power transistor module (IPM) overheating protection F97Compressor overheating protection F98Total running current protection F99Outdoor direct current (DC) peak detection H00No memory of failure; normal operation.H11Indoor/outdoor abnormal communication H12Indoor unit capacity unmatched H14Indoor intake air temperature sensor abnormality H15Compressor temperature sensor abnormality H16Outdoor current transformer (CT) abnormality H19Indoor fan motor mechanism lock H23Indoor heat exchanger temperature sensor abnormality H24Indoor heat exchanger temperature sensor 2 abnormality

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Step-by-step tests with expected resistance, voltage, and continuity values
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M+ Max·Panasonic Air Conditioner

F11 on my Panasonic Air Conditioner

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4-way valve switching abnormality — 4-way valve

From Service Manual 420727, p.19:

1.Check the indoor pipe temperature thermistor against characteristic chart.

2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

H27Outdoor air temperature sensor abnormality H28Outdoor heat exchanger temperature sensor 1 abnormality H30Outdoor discharge pipe temperature sensor abnormality H32Outdoor heat exchanger temperature sensor 2 abnormality H33Indoor/outdoor misconnection abnormality H36Outdoor gas pipe temperature sensor abnormality H37Outdoor liquid pipe temperature sensor abnormality H38Indoor/outdoor mismatch (brand code)H39Abnormal indoor operating unit or standby units H41Abnormal wiring or piping connection H59ECONAVI sensor abnormality H64Outdoor high pressure sensor abnormality H70Light sensor abnormality H97Outdoor fan motor mechanism lock H98Indoor high pressure protection (heating)H99Indoor operating unit freeze protection (cooling)

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