![background image](http://html1.mh-extra.com/html/daikin/ftxn25l/ftxn25l_service-manual_4200014071.webp)
Service Diagnosis
63
UA
Description
INSTALLATION ABNORMALITY
Possible Root
cause
1. Wrong models interconnected.
2. Wrong indoor unit PCB mounted.
3. Indoor unit PCB defective.
4. Wrong outdoor unit PCB mounted or defective.
Troubleshooting
OK?
No
Yes
Are the
connecting wires
connected
properly?
Yes
No
Correct the connection.
Match the compatible models.
Matched compatibly?
No
Yes
Change for the correct PCB.
Replace the indoor unit PCB
(or the outdoor unit PCB).
Check the combination of the
indoor and outdoor unit.
Check the indoor and outdoor
PCB part number.
Summary of Contents for FTXN25L
Page 2: ......
Page 4: ...Table of Contents ii 4 0 Wiring Connection 64 5 0 Refrigerant Diagram 70 6 0 Appendix A 72...
Page 88: ......