Panasonic Inverter Air Conditioner Fault Codes
When it is necessary to display the stored fault codes: 1) Turn on the power supply of the air conditioner; 2) Open the battery compartment cover of the remote control, align the remote control transmitter with the indoor unit of the air conditioner, and press the diagnostic button (Beijing Chunlan Air Conditioner Repair Center); 3) The fault code display area will show for 10 seconds and then automatically turn off (Chunlan Air Conditioner); 4) When the power is cut off and turned on again, the same fault code can still be displayed. The codes are represented as follows:
H11: Communication abnormality
H14: Abnormal indoor unit inlet temperature sensor
H15: Abnormal outdoor compressor temperature sensor
H16: Outdoor CT break or module abnormality
H19: Abnormal indoor fan motor
H23: Abnormal outdoor heat exchanger temperature sensor
H27: External temperature sensor abnormality or outdoor temperature exceeds limit value (sometimes also appears when there is a short circuit of hot air in the outdoor unit)
H28: Abnormal outdoor heat exchanger temperature sensor
H98: Excessive indoor pressure protection (when heating)
H99: Indoor heat exchanger defrost protection (when cooling or dehumidifying) (anti-freeze protection)
F11: Abnormal switching between cooling and heating (mainly due to poor contact of the outdoor P board connector CN-HOT, four-way valve, four-way valve coil)
F91: Refrigeration cycle abnormality (insufficient refrigerant, flattened pipe, valve not opened)
F96: Over-temperature protection of the outdoor module
F97: Compressor over-temperature protection
F98: Total current protection (low voltage, poor heat dissipation of the outdoor unit when replacing yellow-green pipes)
F99: DC peak current control (mainly due to low power supply voltage, module, outdoor P board, compressor)