Fujitsu AOU24RML1 User Manual

Trouble shooting 3
INDOOR UNIT
INDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 : Check Point 2 : Remove connector and check Thermistor resistance value
Check Point 1 : Check connection of Connector
Check Point 3 : Check Point 3 : Check voltage of Controller PCB (DC5.0V)
6.51
95°F
(35°C)
8.04
86°F
(30°C)
10.012.515.820.225.933.6Resistance Value (k )
77°F
(25°C)
68°F
(20°C)
59°F
(15°C)
50°F
(10°C)
41°F
(5°C)
32°F
(0°C)
Temperature
OK
OK
3.594.355.30Resistance Value (k )
122°F
(50°C)
113°F
(45°C)
104°F
(40°C)
Temperature
THERMISTOR
(PIPE TEMP.)
THERMISTOR
(ROOM TEMP.)
GRAY
GRAY
BLACK
BLACK
Room Temperature Thermistor Error
Indoor Unit Control PCB(AS, AR) ,
Main PCB(AU) or Room Temperature
Thermistor
When Room Temperature Thermistor open or short-circuit is
detected at power ON.
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.
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(AS, AR), Main PCB(AU).
02-10
1
2
1
2
CN5 CN6 (AS)
CN8 CN7 (AR) CN8 CN5 (AU)
1. Connector connection failure 2.Thermistor failure 3. Control PCB (AS,AR),MainPCB (AU) failure

Fujitsu AOU24RML1 Specifications

General

Brand	Fujitsu
Model	AOU24RML1
Category	Air Conditioner
Language	English