user manual

8-2-4. Diagnostic Procedure for Each Check Code (Indoor Unit)
Check code
[E01 error]
Is inter-unit cable of A and B normal?
Is group control operation?
Is power of all indoor units turned on?
Is power supplied to remote controller?
AB terminal: Approx. DC18V
Are 2 remote controllers set
without master unit?
Are 2 header units set in
2 remote controllers?
Is there no disconnection or
contact error of connector on harness
from terminal block of indoor unit?
Check power connection of indoor unit.
(Turn on power again.)
Check indoor P.C. board (MCC-1570).
Defect → Replace
Check remote controller P.C. board.
Defect → Replace
Correct as a header unit and a follower unit.
Check remote controller P.C. board.
Defect → Replace
Correct a header unit/a follower unit.
(Remote controller address connector)
Correct connection of connector.
Check circuit wiring.
Correct inter-unit cable of remote controller
YES
YES
YES
Communication wires
between wired remote controller and
indoor unit connected properly?
Correct communication wire.
NO
YES
YES
YES
YES
NO
Failure of wired remote controller tranmitter
→ Replace wired remote controller.
YES
NO
NO
NO
NO
NO
NO
[E09 error]
[E02 error]
FILE NO. SVM-12004
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