Compressor Thermistor Error
DC
Compressor temperature thermistor
Compressor temperature thermistor short detected
Compressor thermistor open detected
1. Connector connection failure, open
2. Thermistor failure
3. Main PCB failure
OK
OK
Check Point 1 : Check the connector connection and cable open
Connector connection state check
Cable open check
Check Point 2 : Check the thermistor
Thermistor characteristics check (Disconnect the thermistor from the PCB and check.)
* For the thermistor characteristics, refer to the "Service Parts Information 8".
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB (CN146:3-4) voltage value = 5V
Remove the thermistor from Main PCB, check the voltage.
Compressor temperature thermistor (CN146:3-4)
If the voltage do not appear, replace Main PCB
, and execute
the check operation again.
02-31
Trouble shooting 26
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
CN146
TH
ER
M
IS
TO
R
(C
O
M
P
SH
EL
L1
)
TH
ER
M
IS
TO
R
(D
IS
.T
EM
P.
1)
BL
AC
K
BL
AC
K
B
LA
C
K
B
LA
C
K
1 2
3 4
1 2
3 4
Outdoor unit :
POWER
MODE
ERROR
2
7
(L1)
(L2)
(L6)
(L5)
(L4)
(L3)
2
PUMP
DOWN
LOW
NOISE
PEAK
CUT
Indicate or Display:
Economy lamp : Continuous flash.
ERROR CODE : [E : 72]
Indoor Unit : Operation lamp: 7 time Flash,
Timer lamp: 2 time Flash
