58
Troubleshooting
Error display Error display code malfunction
Dual 8
display
LED
Repair method code malfunction
Dual 8
display
LED
Repair method
1 Storage slug EE Heating
LED-pause 3s
and blink 15
times
Replace indoor
main board
15 Sync failure H7 Heating
LED-pause 3s
and blink 7
times
Check if the resistance of compressor and
resistance to ground is normal. If the
compressor is normal, the outdoor main
boar d may be wrong.
2 Indoor PCB
malfunction
EE Heating
LED-pause 3s
and blink 15
times
Replace indoor
main board
16 Current diction
malfunction of
complete unit
U5 Cooling
LED-pause 3s
and blink 13
times
Replace outdoor main board
3 Anti-freezing
protection
E2 Running LED-
pause 3s and
blink 2 times
Outdoor
ambient
temperature is
too low
17 Outdoor ambient
temperature sensor
malfunction
F3 Cooling
LED-pause 3s
and blink 3
times
Is it loose? Measure the resistance value
with universal meter
4 Overload of
system
H4 Heating
LED-pause 3s
and blink 4
times
System is
abnormal,
check if the
evaporator and
condenser is
dirty and
blocked
18 Discharge
protection of
compressor
E4 Running
LED-pause 3s
and blink 4
times
Is it loose? Measure the resistance value
with universal meter
5 No motor of
indoor unit
feedback
H6 Running LED-
pause 3s and
blink 11 times
Is electromotor
mounted
normally?
19 Break-circuit and
short-circuit of
outdoor discharge
temperature sensor
F5 cooling LED-
pause 3s and
blink 5 times
Is it loose? Measure the resistance value
with universal meter
6 Indoor pipe
temperature
sensor
malfunction
F2 cooling LED-
pause 3s and
blink 2 times
Is it loose?
Measure the
resistance
value with
universal meter
20 Break-circuit and
short-circuit of
outdoor condenser
temperature sensor
F4 cooling LED-
pause 3s and
blink 18 times
Is it loose? Measure the resistance value
with universal meter
7 Internal ambient
temperature
sensor
malfunction
F1 Cooling LED-
pause 3s and
blink 1 times
Is it loose?
Measure the
resistance
value with
universal meter
21 Overheat of carbon
fin
P8 heating LED-
pause 3s and
blink 19 times
Is outdoor ambient temperature is too
high? Is radiator mounted correctly?
8 Zero passage
abnormal
UF Heating and
cooling LED
blinks 7 times
at the same
time
Replace indoor
main board
22 DC overcurrent UU Heating and
cooling LED
blink 11 times
at the same
time
9 Overload of
compressor
H3 heating LED-
pause 3s and
blink 3 times
Inspect
connection
state of the
overload wire.
23 Temperature
sensor malfunction
of carbon fin
P7 heating LED-
pause 3s and
blink 18 times
Replace outdoor main board.
10 Startup failure Lc heating LED-
pause 3s and
blink 11 times
Check if the
resistance of
compressor
and resistance
to ground is
normal. If the
compressor is
normal, the
outdoor main
boar d may be
wrong.
24 Lack of Freon or
block protection
F0 cooling LED-
pause 3s and
blink 10 times
11 No motor of
outdoor unit
feedback
UH Heating and
cooling LED
blink 8 times
at the same
time
This
malfunction
may happen
when outdoor
DC
electromotor is
used.
25 DC input voltage is
too high
PH cooling LED-
pause 3s and
blink 11 times
Is voltage of AC power supply normal?
12 Overcurrent
protection
E5 Running LED-
pause 3s and
blink 5 times
Is electric
network
variable?
26 DC input voltage is
too low
PL Heating LED-
pause 3s and
blink 21 times
Is voltage of AC power supply normal?
13 4-way valve
conversion
abnormal
U7 cooling LED-
pause 3s and
blink 20 times
Replace 4-way
valve.
27 Communication
malfunction
E6 Running LED-
pause 3s and
blink 6 times
Is outdoor connecting wire reliably
connected?
14 Phase current
detection
malfunction of
compressor
U1 Heating LED-
pause 3s and
blink 13 times
Replace
outdoor main
board.
28 Setting error, indoor
and outdoor unit
abnormal
UA Heating and
cooling LED
blink 12 times
at the same
time
Outdoor unit is not matched with indoor
unit.
remar
ks
4min after protection stop of compressor, the malfunction is shown in error code. In other situation, the malfunction will be displayed by press the light button for 6 times within 4s.
To Next Page
Loading...
Need help?
General
