E: 29.↓. Connected Unit Number Error (Indoor Unit) - Fujitsu AUUH18LUAS Service Manual

2-8. E: 29.X. Connected unit number error (Indoor unit)
→ired remote
Indicator
controller
→ired remote controller (2-wire)
Detective actuator
Indoor unit main PCB
Forecast of cause
Check point 1. →ire installation
• →rong 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.
2-8. E: 29.↓. Connected unit number error (Indoor unit)
Error code
End
→hen the number of the connected indoor unit exceeds
the limitation.
→rong 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