12
AY-X36RU
AE-X36RU
NO.
Malfunction
Name
Display Method of Indoor Unit
Display Method of Outdoor Unit
A/C status
Possible Causes
Dual 8
Code
Display
Indicator Display (during blink-
ing, ON 0.5s and OFF 0.5s)
Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
28
Charging
malfunction of
capacitor
PU
OFF 3S
and blink
17 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop
Refer to the part three—charging
malfunction analysis of capacitor
29
Malfunction
of module
temperature
sensor circuit
P7
OFF 3S
and blink
18 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop
Replace outdoor control panel AP1
30
Module high
temperature
protection
P8
OFF 3S
and blink
19 times
During cooling operation, compres-
sor will stop while indoor fan will
operate;
During heating operation, the com-
plete unit will stop
After the complete unit is de- ener-
gized for 20mins, check whether
the thermal grease on IPM Module
of outdoor control panel radiator is
inserted tightly. If its no use, please
replace control panel AP1.
31
Decrease fre-
quency due to
high tempera-
ture resistant
during heating
operation
H0
OFF 3S
and blink
10 times
All loads operate normally, while
operation frequency for compres-
sor is decreased
Refer to the malfunction analysis
(overload, high temperature resis-
tant)
32 Static dedust-
ing protection
H2
OFF 3S
and blink
twice
33
Overload
protection for
compressor
H3
OFF 3S
and blink
3 times
OFF 1S
and blink
8 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
1. Wiring terminal OVC-COMP is
loosened. In normal state, the
resistance for this terminal should
be less than 1ohm.
2. Refer to the malfunction analysis
(discharge protection, overload)
34 System is
abnormal
H4
OFF 3S
and blink
4 times
OFF 1S
and blink
6 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
Refer to the malfunction analysis
(overload, high temperature resis-
tant)
35 IPM protection
H5
OFF 3S
and blink
5 times
OFF 1S
and blink
4 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
Refer to the malfunction analysis
(IPM protection, loss of synchronism
protection and over current protec-
tion of phase current for compres-
sor.
36
Module tem-
perature is too
high
H5
OFF 3S
and blink
5 times
OFF 1S
and blink
10 times
37
Internal motor
(fan motor) do
not operate
H6
OFF 3S
and blink
11 times
Internal fan motor, external fan
motor, compressor and electric
heater stop operation,guide louver
stops at present location.
1. Bad contact of DC motor feed-
back terminal.
2. Bad contact of DC motor control
end.
3. Fan motor is stalling.
4. Motor malfunction.
5. Malfunction of main board rev
detecting circuit.
38
Desynchroniz-
ing of com-
pressor
H7
OFF 3S
and blink
7 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
Refer to the malfunction analysis
(IPM protection, loss of synchronism
protection and over current protec-
tion of phase current for compres-
sor.
39
PFC
protection
HC
OFF 3S
and blink
6 times
OFF 1S
and blink
14 times
During cooling and drying opera-
tion, compressor will stop while
indoor fan will operate; During
heating operation, the complete
unit will stop operation.
Refer to the malfunction analysis
40
Outdoor DC
fan motor mal-
function
L3
OFF 3S
and blink
23 times
OFF 1S
and blink
14 times
Outdoor DC fan motor malfunction
lead to compressor stop operation,
DC fan motor malfunction or system
blocked or the connector loosed
41 power protec-
tion
L9
OFF 3S
and blink
20 times
OFF 1S
and blink
9 times
Compressor stop operation and
Outdoor fan motor will stop 30s lat-
ter , 3 minutes latter fan motor and
compressor will restart
To protect the electrical components
when detect high power
42
Indoor unit and
outdoor unit
doesn't match
LP
OFF 3S
and blink
19 times
OFF 1S
and blink
16 times
Compressor and Outdoor fan
motor can’t work
Indoor unit and outdoor unit doesn't
match