Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.
Outdoor unit fan motor 1 error The manual lists no action for this code.
Outdoor unit compressor motor control error The manual lists no action for this code.
Outdoor current sensor error The manual lists no action for this code.
Outdoor air temp. thermistor error code 74.1 indicates a problem with the outdoor temperature sensor. The manual lists no action for this code.
Outdoor unit heat exchanger temperature thermistor error The manual lists no action for this code.
Outdoor unit discharge temp. thermistor error The manual lists no action for this code.
Outdoor unit discharge temp. thermistor error The manual lists no action for this code.
The outdoor unit IPM error has occurred. The manual lists no action for this code.
The outdoor unit has a filter or PFC circuit error. The manual lists no action for this code.
The system detected a connection error with the indoor unit. The manual's first action is: “5 flashes”
Expansion valve error is displayed when the 3-way valve temperature thermistor has an error. The manual's first action is: “3 flashes”
The system detected an error in the 2-way valve temperature sensor. The manual's first action is: “3 flashes”
Communication error (inverter to multi controller) The manual's first action is: “8 flashes”
Outdoor unit fan error detected due to abnormal current value or motor not locked. The manual's first action is: “-Check DC 15V between black & white wire. Voltage not present. -Controller PCB defective.”
The compressor does not operate due to synchronization or position errors. The manual's first action is: “-Check if 2-way valve or 3-way valve are open. Check the compressor. (Wiring resistance value, loose wire). -Ch…