Fujitsu AB Series A18LATN User Manual

Trouble shooting 19
OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause:
Check Point 2 : Check ambient temp. around motor
OK
OK
Indicate or Display:
ERROR CODE : E : 1b
Outdoor Unit Fan Motor Error
Outdoor Unit Main PCB Circuit
Outdoor Fan Motor
1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure
Check Point 1 : Check rotation of Fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
Check Point 3 : Check Output Voltage of Main PCB
Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)
If the voltage is not correct, replace Main PCB.
When outdoor fan rotation speed is less than 100rpm in 20 seconds
after fan motor starts, fan motor stops.
After fan motor restarts, if the same operation within 60sec is repeated
3 times in a row, compressor and fan motor stops.
If and repeats 5 times in a row, compressor and fan motor stops
permanently.
AB*A18L/ 24L AB*A36L/ 45L
Read wire DC voltage
Red - Black
White - Black
150 390V
15 1.5V
〜
Read wire DC voltage
Red - Black
White - Black
300 400V
15 1.5V
〜
07-21
CN800
CN801
1
2
3
4
5
6
7
1
2
3
4
5
6
7
BLACK
WHITE
YELLOW
BROWN
RED
BLACK
WHITE
YELLOW
BROWN
RED
FM
FM
FAN MOTOR 1
FAN MOTOR 2
CN801
1
2
3
4
5
6
BLACK
WHITE
YELLOW
BROWN
RED
FM
FAN MOTOR
Outdoor Unit (AB*A12L/ 24L) : LED 5sec ON/ 5sec OFF
(AB*A36L/ 45L) : LED 15 times blink (Upper fan)
LED 16 times blink (Lower fan)

Fujitsu AB Series A18LATN Specifications

General

Brand	Fujitsu
Model	AB Series A18LATN
Category	Air Conditioner
Language	English