Electic Control and
Debugging
391
Super Match
LED flash times
of indoor PCB
Pannel
controller
display
Contents of
Malfunction
Possible reasons
LED4 LED3
0
0
0
1
2
4
E1
E2
E4
Malfunction of indoor
unit ambient temper-
ature sensor
Sensor disconected
,or brok-
en,or at wrong position,or
short circuit
Malfunction of indoor
unit piping temper-
ature sensor
EEPROM wrong of
indoor PCB
EEPROM chip disconected
or broken or wrong program-
med,or PCB broken
Abnormal communi-
cation between indo-
or and outdoor units
Wrong connection,or the
wires be disconected or wro-
ng adress setting of indoor
unit or faulty power supply
or faulty PCB
0
0
0
0
0
7
8
12
13
16
E9
E8
E0
E3
E5
Abnormal communi-
cation between indo-
or pannel controller
and indoor unit
Wrong connection or pannel
controller broken,or PCB
faulty
Malfunction of drain
system
Zero cross sigal
wrong
Zero cross sigal detected
wrong
Indoor mode
abnorm-
indoor mode is not corresp-
ond to the out door running
mode
Note:
①The outdoor failure can also be indicated by the indoor unit,the checking method as follo-
ws: LED4 flash times stands for ten's place,and LED3 flash times stands for one's place,
use this ten-digit number minus 20,then will get the outdoor error code.For example,if the
outdoor error code is 15,LED4 will flash 3 times firstly,two seconds later,LED3 will flash 5
times , and four seconds later the process will repeat again.
②LED4 is a yellow one on the indoor PCB,LED3 is a green one.
③To get much more details about the out door unit failure,please refer to
the outdoor unit trouble shooting list.
INDOOR UNIT TROUBLE SHOOTING
0150511755
Sensor disconected,or brok-
en,or at wrong position,or
short circuit
Pump motor disconnected
or at wrong position,or the
float switch disconnected，
or at wrong position,or the
short circuit bridge disconne
ted
al
E6
Malfunction of the out-
door unit
Malfunction of the outdoor
unit
Refer to note
AP48DS1ERA(S)
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