Trouble shooting 24
OUTDOOR UNIT Error Method:
Indicate or Display:
Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF
ERROR CODE : E : 29
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
4.77
25°C
5.98
20°C
7.56
9.63
12.4
16.1
21.0
27.8
Resistance Value (k )
15°C
10°C
5°C
0°C
-5°C
-10°C
Temperature
OK
OK
OK
OK
DC
3.84
30°C
0.446
90°C
0.606
80°C
0.840
1.19
1.71
2.08
2.53
3.11
Resistance Value (k )
70°C
60°C
50°C
45°C
40°C
35°C
Temperature
0.333
100°C
TH
E
R
M
IS
TO
R
(P
IP
E
O
U
T)
TH
E
R
M
IS
TO
R
(D
IS
C
H
A
R
G
E
)
TH
E
R
M
IS
TO
R
(C
O
M
P
R
E
S
S
O
R
)
TH
E
R
M
IS
TO
R
(P
IP
E
M
ID
)
TH
E
R
M
IS
TO
R
(O
U
TD
O
O
R
)
B
LA
C
K
CN70 CN72 CN73 CN71
2 1
3 2 1
4 3 2 1
2 1
B
R
O
W
N
B
R
O
W
N
B
LA
C
K
B
LA
C
K
Outdoor Heat Exchanger Temperature
Sensor (Middle) Error
Outdoor Unit Main PCB Circuit
Heat Exchanger Temperature
Thermistor (Middle)
When Heat Exchanger Temperature Thermistor (Middle) open or
short-circuit is detected at power ON or while running the compressor.
1. Connector connection failure 2.Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
Check Point 2 : Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
If the voltage does not appear, replace Main PCB.
02-26
2 1
3 2 1
4 3 2 1
2 1
