Fujitsu AOCG040LBTA, Инструкция по эксплуатации

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Trouble shooting 16
OUTDOOR UNIT Error Method:
Detective Actuators: Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
OK OK
OK OK
Outdoor temp. thermistor error
Outdoor unit Main PCB
Outdoor temperature thermistor
When the outdoor 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
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.
02-18
Thermistor Characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
50
Resistance Value (k )
40 30 20 10 0 -30 -20 -10 Temperature( °C )
Resistance Value (k )
70 80 60 Temperature( °C )
224.3 115.2 62.3 35.2 20.7 12.6 8.0 5.2
3.5 2.4 1.6 1.2
TH
E
R
M
IS
TO
R
(D
IS
C
H
A
R
G
E
)
TH
E
R
M
IS
TO
R
(P
IP
E
)
TH
E
R
M
IS
TO
R
(O
U
TD
O
O
R
)
B
LA
C
K
B
LA
C
K
CN70 CN71
1 2 3 4
1 2 3 4
1 2 3
1 2 3
B
R
O
W
N
Indicate or Display:
Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF
Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 4 time Flash
Economy lamp : Continuous flash.
ERROR CODE : [E : 74]