226
AD50S2SM1FA AD71S2SM1FA
LED ash times
of indoor PCB
Wired controller display Contents of Malfunction Possible reasons
LED4 LED3
0 1 01
Malfunction of indoor unit
ambient temper-ature
sensor
Sensor disconected, or brok-en,or at
wrong position,
or short circuit
0 2 02
Malfunction of indoor unit
piping temper-ature sensor
Sensor disconected,
or brok-en,or at
wrong position,
or short circuit
0 4 04
EEPROM wrongof indoor
PCB
EEPROM chip disconected or broken
or wrong program-med,
or PCB
broken
0 7 07
Abnormal communi-cation
between indo-or and
outdoor units
Wrong connection,
or the wires be
disconected or wrong adress setting
of indoor unit or faulty power supply or
faulty PCB or slave unit malfunction in
MAXI system
0 8 07*ashing
Abnormal communi-cation
between wired controlleer
and indoor unit
Wrong connection or wired controller
broken,
or PCB faulty
0 12 0C
Malfunction of drain
system
Pump motor disconnected or at
wrong position,
or the oat switch
disconnected or at wrong position,
or
the short circuit bridge disconne ted
0 13 0D Zero cross sigal wrong Zero cross sigal detected wrong
0 14 0E
Indoor unit DC fan motor
abnormal
DC Fan motor disconnected or DC
Fan broken or circuit broken or motor
blocked
Note:
1.The outdoor failure can also be indicated by the indoor unit,
the checking method as follows: If the outdoor error
code is M (DECIMAL),
the indoor unit's wired controller display will
show the after converted hexadecimal code of
"M+20"
(DECIMAL)
,
for example,
if the outdoor
error code is 2,
the indoor unit wired controller display will ash the
error code 16 (2-2+20=22-change decimal 22 to hexadecimal code,
get 16 )
2.To get much more details about the out door unit failure,please refer to the outdoor unit
trouble shooting list.
3.
For YR-E17,
communication error between I.D.PCB and wired
controller,
07 will ash in the main display
interface not the check display interface.
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