Fujitsu ARXG45KMLA User Manual

Check point 4. Check serial signal (Forward transfer signal)
Check serial signal (Forward transfer signal)
+
-
AC
1
2
3
L1
L2
RED
WHITE
BLACK
RED
WHITE
L3
N
BLACK
BLUE
• Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3.
• If it is abnormal, replace main PCB.

End
Check point 1-2. Check external cause such as noise
• Check the complete insulation of the grounding.
• Check if there is any equipment that causes harmonic wave near the power cable (Neon light
bulb or any electronic equipment which causes harmonic wave).

End
2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) - (03-7) - 2. Troubleshooting with error code
TROUBLESHOOTING TROUBLESHOOTING

Fujitsu ARXG45KMLA Specifications

General

Brand	Fujitsu
Model	ARXG45KMLA
Category	Air Conditioner
Language	English