E: 23. Combination Error (Outdoor Unit) - Fujitsu ACUH09LUAS1 Service Manual

2-5. E: 23. Combination error (Outdoor unit)

→ired remote
Indicator
controller
Detective actuator Indoor unit
Forecast of cause
Check point 1. Check the type of indoor unit
• Check the type of the connected indoor unit.
-> If there is an abnormal condition, correct it by refer to the installation manual or the "DESIGN
& TECHNICAL MANAL".
Check point 2. Replace main PCB
If check point 1 do not improve the symptom, replace main PCB of the outdoor unit.
2-5. E: 23. Combination error (Outdoor unit)
Error code
End
• The outdoor unit receives the serial signal of
applied refrigerant information from indoor unit.
(→hen the refrigerant type is R410A)
• →hen the outdoor unit type is multi type
Incorrect indoor unit is selected.
- (03-9) -
E: 23
2. Troubleshooting with error code