Diagnostic Procedure For Each Check Code (Indoor Unit) - Toshiba RAV-SM2244DTP-TR Service Manual

7-3. Diagnostic Procedure for Each Check Code (Indoor Unit)

Check code
[E01]
Is inter-unit cable of A and B normal?
Is there no disconnection or
contact trouble of connector on harness
from terminal block of indoor unit?
NO
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 header unit?
[E09]
Are 2 header units set in
2 remote controllers?
NO
YES
YES
NO
YES
YES
YES
YES
NO
YES
NO
– 50 –
NO
Check power connection of indoor unit.
NO
Check indoor P.C. board (MCC-1643).
Correct a header unit/a follower unit.
(Remote controller address connector)
Correct inter-unit cable
of remote controller
Correct connection of connector.
Check circuit wiring.
(Turn on power again.)
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