Fujitsu AOU24RML1 User Manual

Trouble shooting 8
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
18.126.9
68°F
(20°C)
41.164.581.8105135176Resistance Value (k )
59°F
(15°C)
50°F
(10°C)
41°F
(5°C)
32°F
(0°C)
Temperature
OKOK
OKOK
12.5
86°F
(30°C)
122°F
(50°C)
104°F
(40°C)
140°F
(60°C)
0.51
356°F
(180°C)
0.77
320°F
(160°C)
1.211.983.434.616.318.78Resistance Value (k )
284°F
(140°C)
248°F
(120°C)
212°F
(100°C)
194°F
(90°C)
176°F
(80°C)
158°F
(70°C)
Temperature
Outdoor Discharge Pipe Temperature
Thermistor Error
Outdoor Unit Main PCB Circuit
Discharge Pipe Temperature Thermistor
When Discharge Pipe 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.
02-15
THERMISTOR (DISCHARGE)
THERMISTOR (PIPE) THERMISTOR (OUTDOOR) THERMISTOR (COMPRESSOR) THERMISTOR (HEAT SINK)
BROWN BLACK BLACK BLUE BROWN
CN25 CN26 CN23 CN22 CN21
1 21 21 21 21 2

Fujitsu AOU24RML1 Specifications

General

Brand	Fujitsu
Model	AOU24RML1
Category	Air Conditioner
Language	English