Fujitsu AOUH18LMAS1, Service Manual

Page: 67 / 215

Tip
Depending on the connected remote controller type, following setting is required:
Connected remote controller DIP switch Jumper (JM9)
2-wire type
Factory setting: 2WIRE
2WIRE /3WIRE
JM9
Disconnected
3-wire type
2WIRE/ 3WIRE
Factory setting: 3WIRE
Connected
(Factory setting)
JM9
• 2-wire type remote main PCB
If the communication PCB is not connected and JM9 is disconnected, 3A error is displayed.
If the communication PCB is connected and JM9 is connected, the 2-wire remote controller does
not work.
If the DIP switch is 3-wire side, the 2-wire type remote controller does not work.
• 3-wire type remote main PCB
If the DIP switch is 2-wire side, the 3-wire type remote controller does not work.
2-10. E: 3A.↓. Indoor unit communication circuit error (Indoor unit)
- (03-25) -
2. Troubleshooting with error code
TR
O
U
B
LESH
O
O
TI
N
G
TR
O
U
B
LESH
O
O
TI
N
G