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SiUS091601EA
Troubleshooting for FDMQ Series
Part 6 Service Diagnosis
142
6.4 Indoor Fan PCB Abnormality
Error Code
A8
Method of Error
Detection
Microcomputer checks the voltage state of the fan PCB.
Error Decision
Conditions
Overvoltage or voltage drop is detected on the fan PCB.
Supposed
Causes
Defective fan PCB
External factor such as noise
Troubleshooting
R6000549
Caution
Be sure to turn off the power switch before connecting
or disconnecting connectors, or parts may be damaged.
Check for the indoor unit control
PCB (A1P) and the fan PCB
(A2P).
Connect the connector correctly.
NO
YES
YES
Is the
connector X3A on
the fan PCB connected
correctly?
Connect the connector correctly.
NO
YES
Is the
connector X70A on
the indoor unit control PCB
connected correctly?
Replace the harness.
YES
Is the harness
connecting X3A and X70A
broken?
NO
NO
Remove the external factor.
YES
Is there any external
factor such as noise?
Normal.
NO
Error is displayed
again.
Turn OFF the power supply
and then turn it ON again.
Start operation with the
remote controller.
Содержание FTX-N Series
Страница 14: ...SiUS091601EA 9 Part 1 General Information 1 Applicable Models 10 2 Functions 11 Part 1 General Information...
Страница 18: ...SiUS091601EA 13 Part 2 Specifications 1 Specifications 14 Part 2 Specifications...
Страница 132: ...Troubleshooting for FTX FVXS Series SiUS091601EA 127 Part 6 Service Diagnosis Reference Check No 01 Refer to P 181...
Страница 161: ...SiUS091601EA Troubleshooting for Outdoor Unit Part 6 Service Diagnosis 156 Reference Check No 14 Refer to P 185...
Страница 165: ...SiUS091601EA Troubleshooting for Outdoor Unit Part 6 Service Diagnosis 160 Reference Check No 18 Refer to P 190...
Страница 180: ...Troubleshooting for Outdoor Unit SiUS091601EA 175 Part 6 Service Diagnosis Reference Check No 19 Refer to P 191...
Страница 197: ...SiUS091601EA Check Part 6 Service Diagnosis 192 12 class 15 class Multimeter R23024 R25105 1 2 3 4 Multimeter...
Страница 198: ...Check SiUS091601EA 193 Part 6 Service Diagnosis 18 24 class R24538 1 2 3 4 Multimeter...
Страница 201: ...SiUS091601EA Check Part 6 Service Diagnosis 196 18 24 class R24539 DC DC W V U...
Страница 228: ...Piping Diagrams SiUS091601EA 223 Part 8 Appendix 1 2 Outdoor Unit RXL09QMVJU RXL12QMVJU 9 3D100008 3D100009A...
Страница 229: ...SiUS091601EA Piping Diagrams Part 8 Appendix 224 RXL15QMVJU RXL18UMVJU 3D100007 3D123368...
Страница 230: ...Piping Diagrams SiUS091601EA 225 Part 8 Appendix RXL24UMVJU 3D107985A...