Panasonic CS-E10JD3EA / U-E10HBEA / CS-E15JD3EA / CU-E15HBEA / CS-E18JD3EA / CU-E18HBEA Service Manual ▷ View online
69
15.5.10. H28 (Outdoor Pipe Temperature Sensor Abnormality)
Malfunction Decision Conditions
• During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used
to determine sensor errors.
Malfunction Caused
• Faulty connector connection.
• Faulty sensor.
• Faulty PCB.
• Faulty sensor.
• Faulty PCB.
Troubleshooting
70
15.5.11. H30 (Compressor Discharge Temperature Sensor Abnormality)
Malfunction Decision Conditions
• During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature
sensor are used to determine sensor errors.
Malfunction Caused
• Faulty connector connection.
• Faulty sensor.
• Faulty PCB.
• Faulty sensor.
• Faulty PCB.
Troubleshooting
71
15.5.12. H97 (Outdoor Fan Motor – DC Motor Mechanism Locked)
Malfunction Decision Conditions
• The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor.
Malfunction Caused
• Operation stops due to short circuit inside the fan motor winding.
• Operation stops due to breaking of wire inside the fan motor.
• Operation stops due to breaking of fan motor lead wires.
• Operation stops due to Hall IC malfunction.
• Operation error due to faulty outdoor unit PCB.
• Operation stops due to breaking of wire inside the fan motor.
• Operation stops due to breaking of fan motor lead wires.
• Operation stops due to Hall IC malfunction.
• Operation error due to faulty outdoor unit PCB.
Troubleshooting
72
15.5.13. H98 (Indoor High Pressure Protection)
Error Code will not display (no Timer LED blinking) but store in EEPROM
Malfunction Decision Conditions
• During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60
°C.
Malfunction Caused
• Air short circuit.
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• 2/3 way valve closed.
• Detection error due to faulty indoor fan motor.
• Excessive refrigerant.
• Clogged expansion valve or strainer.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• 2/3 way valve closed.
• Detection error due to faulty indoor fan motor.
• Excessive refrigerant.
• Clogged expansion valve or strainer.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.
Troubleshooting
Click on the first or last page to see other CS-E10JD3EA / U-E10HBEA / CS-E15JD3EA / CU-E15HBEA / CS-E18JD3EA / CU-E18HBEA service manuals if exist.