Service manual

53 Room Air Conditioner
Troubleshooting Guide
Malfunction display
Blink 1 time
Compressor is running
Blink 2 times High-pressure protection stop of compressor
Blink 3 times
Exhaust protection stop
Blink 4 times
Communication malfunction stoop (including indoor
unit and SIPM)
Blink 5 times
SIPM module protection stop
Blink 6 times
Overcurrent protection stop
Blink 7 times
Cooling overload stop
Blink 8 times Heating anti-high-temperature stop
Blink 9 times
Cooling antifreezing stop
Blink 10 times Sensor malfunction stop
Blink 1 time
Blink 2 times
Blink 3 times
Blink 4 times
Blink 5 times
Blink 6 times
Blink 7 times
Blink 8 times
Communication malfunction of unit A (not receiving
correct data for 3 minutes)
Indoor middle sensor malfunction of unit A
Indoor outlet sensor malfunction of unit A
Indoor inlet sensor malfunction of unit A
Indoor environmental sensor malfunction of unit A
Communication malfunction signal sent by indoor unit
A
Antifreezing protection of unit A
Anti-high-temperature protection of unit A