Fujitsu ARTG60LHTA

Trouble shooting 10
INDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators: Detective details:
Forecast of Cause :
Check Point 2 : Remove connector and check thermistor resistance value
Check Point 1 : Check connection of connector
Check Point 3 : Check voltage of Controller PCB (DC5.0V)
OK
OK
Room temp. sensor error
Indoor unit Controller PCB
Room temperature thermistor
When Room Temperature Thermistor open or short-circuit is
detected at power ON.
1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure
Check if connector is removed.
Check if connector is erroneous connection.
Check if thermistor cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
Thermistor characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
Make sure circuit diagram of indoor unit and check terminal voltage at thermistor (DC5.0V)
If the voltage does not appear, replace Controller PCB.
02-12
Refer to error code table.
6.5
35
8.0
30
10.012.515.820.225.933.6
Resistance Value ( )
2520151050
58.2
-10
44.0
-5
Temperature (°C)
Resistance Value ( )
4.35.3
4540
Temperature (°C)
H/E (MID) Thermistor
Room Temp. Thermistor
Other model
BLACK
BLACK
1
2
1
2
11
22
11
22
CN5
CN8
GRAY
GRAY
1
2
CN7
H/E (MID) Thermistor
Room Temp. Thermistor
AR*G45/ 54LHTA
BLACK
BLACK
1
2
1
2
11
22
CN8
GRAY
GRAY
CN7
H/E (MID) Thermistor
Room Temp. Thermistor
ARTG45/ 54LHTB, 60LHTA
BLACK
BLACK
BLACK
BLACK
1
2
1
2
11
22
CN114
CN110
H/E (MID) Thermistor
Room Temp. Thermistor
AU*G36/ 45/ 54LRLA
RED
RED
1
2
1
2
11
22
CN5
CN8
BLACK
BLACK
1
2
CN7
1
2
1
2
1
2
1
2
1
2
H/E (MID) Thermistor
Room Temp. Thermistor
BLACK
BLACK
CN5
CN8
GRAY
GRAY
CN7
BLACK
BLACK
AB*G18LVTB, 22/ 24LVTA