Troubleshooting
SiUS042113E
90
Part 6 Service Diagnosis
Note
4.2 Indoor Unit PCB Abnormality
Error Code
A1
Method of Error
Detection
The system checks if the circuit works properly within the microcomputer of the indoor unit.
Error Decision
Conditions
The system cannot set the internal settings.
Supposed
Causes
Defective indoor unit PCB
Disconnection of connector
Troubleshooting
R6000804
Check the connection of
connectors/wire harness.
★
Correct the connection.
OK?
Start operation.
Error repeats?
Start operation.
Error repeats?
Error repeats?
Combination of
the indoor and o
u
tdoor
u
nit matched?
YES
NO
NO
YES
NO
NO
YES
Caution
To sec
u
re the connection,
disconnect the connectors once
and then reconnect.
YES
NO
YES
Match the compatible
models.
Replace the indoor
u
nit
PCB (control PCB).
Completed.
Completed.
Replace the indoor
u
nit
PCB (control PCB).
Completed.
Be s
u
re to t
u
rn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Wire Harness (Connector)
Terminal strip ~ Power supply PCB (S101)
Power supply PCB (S102, S103) ~ Control PCB (S300A, S301B)
Summary of Contents for FTXM-V Series
Page 16: ...SiUS042113E 12 Part 2 Specifications 1 Specifications 13 Part 2 Specifications...
Page 96: ...Troubleshooting SiUS042113E 92 Part 6 Service Diagnosis Reference Check No 01 Refer to P 134...
Page 150: ...Check SiUS042113E 146 Part 6 Service Diagnosis 18 24 class R24539 DC DC W V U...
Page 166: ...Piping Diagrams SiUS042113E 162 Part 8 Appendix RXM24VVJU 3D132217...
Page 171: ...SiUS042113E Operation Limit Part 8 Appendix 167 3 Operation Limit RXM09 12 18 24VVJU 3D133582A...
