Code
16
17
18
19
20
21
22
23
24
25
26
27
28
U5
F3
F4
F5
F4
P8
UU
P7
F0
PH
PL
E6
UA
Cooling LED-pause 3 seconds
and blink 13 times
Cooling LED-pause 3 seconds
and blink 3 times
Running LED-pause 3 seconds
and blink 4 times
Cooling LED-pause 3 seconds
and blink 5 times
Cooling LED-pause 3 seconds
and blink 18 times
Heating LED-pause 3 seconds
and blink 19 times
Heating and cooling LED blink
11 times at the same time
Heating LED-pause 3 seconds
and blink 18 times
Cooling LED-pause 3 seconds
and blink 10 times
Cooling LED-pause 3 seconds
and blink 11 times
Heating LED-pause 3 seconds
and blink 21 times
Running LED-pause 3 seconds
and blink 6 times
Heating and cooling LED blink
12 times at the same time
Replace outdoor main board.
Is it loose ?
Measure the resistance value with universal
meter.
Is it loose ?
Measure the resistance value with universal
meter.
Is it loose ?
Measure the resistance value with universal
meter.
Is it loose ?
Measure the resistance value with universal
meter.
Is outdoor ambient temperature is too high ?
Is radiator mounted correctly ?
Replace outdoor main board.
Is voltage of AC power supply normal ?
Is voltage of AC power supply normal ?
Is Outdoor connecting wire reliably connected ?
Outdoor unit is not matched with indoor unit.
Current detection
malfunction of
complete unit
Outdoor ambient
temperature sensor
malfunction
Discharge protection
of compressor
Break-circuit and
short-circuit of outdoor
discharge temperature
sensor
Break-circuit and
short-circuit of outdoor
condenser temperature
sensor
Overheat of carbon fin
DC over current
Temperature sensor
malfunction of carbon
fin
Lack of Freon or block
protection
DC input voltage is
too high
DC input voltage is too
low
Communication
malfunction
Setting error.
Indoor and outdoor
unit abnormal
Malfunction Repair Method
LED
Error Display
Dual 8
Display
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