ESIE09-08B Troubleshooting by Remote Control
Troubleshooting 127
: ON : OFF c: Blink
Malfunction
code
Operation
lamp
Malfunction contents Page
Referred
A1 c PC board defect, E
2
PROM defect 132
A6 c Pump error 133
A9 c Malfunction of moving part of electronic expa
nsion valve (Y1E) 134
AJ c Malfunction of capacity setting 137
C1 c Failure of transmission (between indoor un
it PC board and fan PC board) 138
C4 c Malfunction of thermistor (R3T) for R-410A liquid/indoor unit (loose connection,
disconn
ection, short circuit, failure)
140
C5 c Malfunction of thermistor (R2T) for tank thermistor (loose connection,
disconn
ection, short circuit, failure)
141
C9 c Malfunction of thermistor (R4T) for return water thermistor (loose connection,
disconnection, short circuit, failure)
142
CA c Malfunction of thermistor (R5T) for leaving water temperature (loose connection,
disconn
ection, short circuit, failure)
143
CJ Malfunction of thermostat sensor in remote control 144
E1 c PC board defect 145
E3 c Actuation of high pressure switch 147
E4 c Actuation of low pressure sensor 152
E5 c Compressor motor lock 156
E6 c Standard compressor lock or over current —
E7 c Malfunction of outdoor unit fan motor 158
E9 c Malfunction of moving part of electronic expa
nsion
valve (Y1E, Y3E) 160
F3 c Abnormal discharge pipe temperature 164
H9 c Malfunction of thermistor (R1T) for outdoor air (loose connection, disconnection,
sh
ort circui
t, failure)
166
J2 c Current sensor malfunction —
J3 c Malfunction of discharge pipe thermistor (R2T, R6T) (l
oose connection,
disconnection, short circuit, failure)
167
J5 c Malfunction of thermistor (R3T, R5T, R7T) for su
ction pipe (loose connection,
disconnection, short circuit, failure)
169
J6 c Malfunction of thermistor (R6T) for heat exchanger (loose connection,
disconnection, short circuit, failure)
171
J7 c Malfunction of thermistor (R7T) for outdoor unit liquid pipe 172
J9 c Malfunction of subcooling heat exchang
er g
as pipe thermistor (R4T) 173
JA c Malfunction of high pressure sensor IU/OU 174
JC c Malfunction of low pressure sensor IU/OU 176
L1 c Malfunction of PC board 178
L4 c Malfunction of inverter radiating fin temperature rise 180
L5 c Inverter compressor abnormal 182
L8 c Inverter current abnormal 184
L9 c Inverter start up error 186
LC c Malfunction of transmission between inverter and control PC board 188
P1 c High voltage of capacitor in main inverter circuit. 191
PJ c Faulty combination of PCB 193
System U0 Low pressure drop due to refrigerant shortage or electronic expansion valve
failure
194
U2 c Power supply insufficient or instantaneous failure 196
U4 c Malfunction of transmission between indoor and outdoor unit 200
U5 c Malfunction of transmission between remote control and indoor unit 203
U5
Failure of remote control PC board or setting during control by remote control 203
U7 c Malfunction of transmission outdoor unit 204
U8 c Malfunction of transmission between main and sub remote controls (malfunction of
su
b remote control)
205
UA c Communication error between outdoor unit and indoor unit 206
UF c System is not set yet 204
UH c Malfunction of system, refrigerant system address undefined 205
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
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