Fujitsu AO*24LMAKL, Service Instruction

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Trouble shooting 5
OUTDOOR UNIT Error Method:
Indicate or Display:
Indoor Unit : No LED
Outdoor Unit : LED 3 times blink
ERROR CODE : E : 06
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
4.89
25°C
6.10
20°C
7.67 9.73 12.4 16.1 20.9 27.5 Resistance Value (k )
15°C 10°C 5°C 0°C -5°C -10°C
Temperature
OK OK
OK OK
DC
3.95
30°C
TH
E
R
M
IS
TO
R
(D
IS
C
H
A
R
G
E
)
TH
ER
M
IS
TO
R
(P
IP
E)
TH
E
R
M
IS
TO
R
(O
U
TD
O
O
R
)
TH
E
R
M
IS
TO
R
(C
O
M
P
R
E
S
S
O
R
)
TH
E
R
M
IS
TO
R
(H
E
A
T
S
IN
K
)
B
R
O
W
N
B
LA
C
K
B
LA
C
K
B
LU
E
B
R
O
W
N
CN21
CN22
CN23 CN26 CN25
1 2 1 2 1 2 1 2 1 2
Outdoor Heat Exchanger Temperature
Sensor Error
Outdoor Unit Main PCB Circuit
Heat Exchanger Temperature Thermistor
When Heat Exchanger Temperature Thermistor 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.
07-08