E: 23. Combination Error (Outdoor Unit) - Fujitsu ABYG54KRTA Service Manual

2-6. E: 23. Combination error (Outdoor unit)

Wired 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 the main PCB
If check point 1 do not improve the symptom, replace the main PCB of the outdoor unit.
2-6. E: 23. Combination error (Outdoor unit)
Error code
↓
↓
End
The outdoor unit receives the serial signal of applied
refrigerant information from indoor unit.
Incorrect indoor unit is selected.
- (03-12) -
E: 23
2. Troubleshooting with error code