Panasonic CS-E24JKES / CU-E24JKE / CS-E28JKES / CU-E28JKE Service Manual ▷ View online
73
15.5.16. H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality)
Malfunction Decision Conditions
• During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor
are used to determine sensor errors.
Malfunction Caused
• Faulty connector connection.
• Faulty sensor.
• Faulty PCB.
• Faulty sensor.
• Faulty PCB.
Troubleshooting
74
15.5.17. H58 (Patrol Sensor Abnormality)
Malfunction Decision Conditions
• If Patrol sensor feedback is 0V or 5V continuous for 6 hours.
• Error will display only when the Patrol operation is ON.
• Error will display only when the Patrol operation is ON.
Malfunction Caused
• Faulty connector connection.
• Faulty Patrol sensor.
• Faulty Patrol sensor.
Troubleshooting
75
15.5.18. 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
76
15.5.19. 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
qC.
Malfunction Caused
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• Air short circuit.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.
• Dust accumulation on the indoor unit heat exchanger.
• Air short circuit.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.
Troubleshooting
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