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61

A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit.

• Compressor terminal disconnect
• Outdoor PCB malfunction

62

During operation of cooling, when outdoor unit heat exchanger high temperature data (61

°C) is detected by the outdoor pipe

temperature sensor.

• Outdoor pipe temperature rise due to short circuit of hot discharge air flow.
• Outdoor pipe temperature rise due to defective of outdoor fan motor.
• Outdoor pipe temperature rise due to defective outdoor pipe temperature sensor.
• Outdoor pipe temperature rise due to defective outdoor unit PCB.

63

During operating of cooling and heating, when IPM temperature data (100

°C) is detected by the IPM temperature sensor.

• Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated.
• Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90

°C) is detected by the

heat sink temperature sensor.

• IPM overheats due to short circuit of hot discharge air flow.
• IPM overheats due to defective of outdoor fan motor.
• IPM overheats due to defective of internal circuitry of IPM.
• IPM overheats due to defective IPM temperature sensor.

- Compressor OL connector poor contact.
- Compressor OL faulty.

64

During operation of cooling and heating, when compressor tank temperature data (112

°C) is detected by the compressor tank

temperature sensor.

• Refrigerant shortage (refrigerant leakage).
• 2/3 way valve closed.
• Detection error due to faulty compressor tank temperature sensor.