Fujitsu AOTG30KMTC, Service Manual, Page: 57 / 199

2-6. E: 23. Combination error (Outdoor unit)
Indicator
Indoor unit
Operation indicator 2 time flash
Timer indicator 3 time flash
Economy indicator Continuous flash
Error code E: 23
outdoor unit
Refer to “Error code table (Outdoor unit: for 34 model
only)” on page 1
Detective actuator Indoor unit
• The outdoor unit receives the serial signal of
applied refrigerant information from indoor unit.
(When the refrigerant type is R410A)
• When the outdoor unit type is multi type
Forecast of cause Incorrect indoor unit is selected.
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.
↓
End
2-6. E: 23. Combination error (Outdoor unit)
- (03-19) -
2. Troubleshooting with error code
TROUBLESHOOTING TROUBLESHOOTING