Fujitsu AO G12KATA Series Service Manual

Check point 4. Check serial signal (Forward transfer signal)
Check serial signal (Forward transfer signal)
RED
WHITE
BLACK
+
-
3
2
1
• 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 if the ground connection is proper.
• 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) - (03-17) - 2. Troubleshooting with error code
TROUBLESHOOTING TROUBLESHOOTING

Fujitsu AO G12KATA Series Specifications

General

Brand	Fujitsu
Model	AO G12KATA Series
Category	Air Conditioner
Language	English