Fujitsu AB Series A18LATN User Manual

Trouble shooting 7
INDOOR UNIT
OUTDOOR UNIT Error Method:
Indicate or Display:
ERROR CODE : E : 0A
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
OKOK
OKOK
30°C
12.620.726.935.246.662.3115Resistance Value (k )
20°C
16.1
15°C10°C5°C0°C-20°C -10°C -5°C
Temperature
3.45 2.36 1.65Resistance Value (k )
50°C 60°C 70°C
5.187.97
40°C
Temperature
Outdoor Temperature Sensor Error
Outdoor Unit Main PCB Circuit
Outdoor Temperature Thermistor
When 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
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.
07-09
Outdoor Unit (AB*A18L/ 24L) : LED 0.1sec ON/ 0.1sec OFF
(AB*A36L/ 45L) : LED 4 times blink
For AB*A18L/ 24L For AB*A36L/ 45L
THERMISTOR (PIPE OUT) THERMISTOR (DISCHARGE) THERMISTOR (COMPRESSOR) THERMISTOR (PIPE MID) THERMISTOR (OUTDOOR)
BLACK
CN70 CN72 CN73 CN71
CN24 CN21 CN22 CN23 CN26 CN25
2 13 2 1 4 3 2 12 1
BROWN BROWN BLACK
THERMISTOR (PIPE MID) THERMISTOR (DISCHARGE) THERMISTOR (PIPE OUT) THERMISTOR (OUTDOOR) THERMISTOR (COMPRESSOR) THERMISTOR (HEAT SINK)
BLACK BBROWN BLACK BLUE BROWN BLACK
BLACK
2 13 2 1 4 3 2 12 1
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2

Fujitsu AB Series A18LATN Specifications

General

Brand	Fujitsu
Model	AB Series A18LATN
Category	Air Conditioner
Language	English