Specifications

57
Normal Running Mode condition
If the air conditioner unit has no faulty indications and the compressor is running at normal mode, the outdoor
P.C. Board’s LED indication will blink at a slower pace. The table below shows the significant meaning of
different running mode and limitation for this air conditioner unit.
One must not attempt to see the LED indication blinking unless instructed to do so.
Blinks Blinking Indication
1 Normal running, with no limitation
2 Voltage limit
3 Cooling unit : Outdoor coil temperature limit
Heating unit : Indoor coil temperature limit
4 Total current limit
5 Discharge temperature unit
6 Cooling unit : Indoor coil temperature limit
7 Indoor fan control
8 Outdoor frequency adjustment
Compressor stopped error indication and troubleshooting guide
If the compressor stop unexpectedly, the outdoor P.C.Board’s LED indication will blink accordingly to the
error it detects. The table below shows the meaning according to the number of LED blinking and the
corrective action that one should take.
Blink Fault Indication Corrective Action
RED YELLOW
LED LED
0 1 Outdoor ambient sensor error Check outdoor ambient sensor wire and connection
0 2 Outdoor coil sensor error Check outdoor coil sensor wire and connection
0 3 Outdoor discharge sensor error/ Check outdoor discharge sensor wire and connection/
Compressor overheat indication Check pressure and compressor/Not enough refrigerant/
indoor overload
0 4 DC compressor feedback error Check compressor wire and feedback wire
0 5 Commnication error Check communication wire and connection for both
indoor and outdoor
0 6 Over current error Check total current:check pressure and compressor
0 7 No load Ignore
0 8 Over/ under voltage Check power supply
0 9 DC compressor start failure Check compressor wire and feedback wire;check
compresor
1 0 Cooling overload Check whether outdoor unit is blocked or not;check pressure
1 1 Defrost Ignore
1 2 IPM Proctection Check power supply; check main board/filter board; check
bridge diode; check IPM board; check compressor
1 3 EEPROM Check EEPROM chip connection
1 4 EEPROM write error Check EEPROM chip connection
1 5 DC fan motor no feed back Check fan motor wire connection
1 6 AC peak current error
1 7 Outdoor suction sensor error Check outdoor suction sensor wire and connection
1 9 DC compressor speed control error Check IPM board; check compressor
2 1 Outdoor suction A sensor error Check suction sensor wire pipe A and connection
2 2 Outdoor suction B sensor error Check suction sensor wire pipe B and connection
2 3 Outdoor suction C sensor error Check suction sensor wire pipe C and connection
2 4 Outdoor suction D sensor error Check suction sensor wire pipe D and connection
3 1 Indoor A communication error Check communication wire and connection with indoor A
3 2 Indoor B communication error Check communication wire and connection with indoor B
3 3 Indoor C communication error Check communication wire and connection with indoor C
3 4 Indoor D communication error Check communication wire and connection with indoor D