E: 29. Connected Unit Number Error (Indoor Unit) - Fujitsu AUXG18KVLA Service Manual

2-7. E: 29. Connected unit number error (Indoor unit)

Wired remote
Indicator
controller
Wired remote controller (2-wire)
Detective actuator
Indoor unit main PCB
Forecast of cause
Check point 1. Wire installation
• Wrong number of connected indoor unit
-> If there is an abnormal condition, correct it by refer to the installation manual or the "DESIGN
& TECHNICAL MANUAL".
Check point 2. Check indoor unit main PCB
• Check if main PCB is damaged.
• Change main PCB and check the error after setting remote controller address.
2-7. E: 29. Connected unit number error (Indoor unit)
Error code
↓
↓
End
When the number of the connected indoor unit exceeds
the limitation.
Wrong wiring of indoor unit or remote controller
Number of indoor unit or remote controller in remote
controller group
Indoor unit main PCB failure
- (03-14) -
E: 29
2. Troubleshooting with error code