Toshiba RAV-GM901KRTP Series Service Manual page 55

[E09 error]
Are 2 headers set by
double wired remote controller?
NO
[E18 error]
Are A/B wires normal?
YES
Improper harness connection
from indoor unit terminal block?
Is indoor unit switch SW02 setting correct?
YES
NO
Group control operation?
YES
Are all indoor units powered ON?
YES
NO
Twin or triple control?
Improper signal connection
between indoor unit and outdoor unit?
YES
NO
Bit 1: OFF
Bit 2: OFF
YES
NO
Correct one header/one follower.
(Wired remote controller address connector)
Check wired remote controller board.
→ Replace it if necessary.
NO
Correct wired remote controller wire connection.
YES
Correct connector connection.
Check circuit wiring.
NO
Correct switch setting on MCC-1696 P.C. board.
NO
Check indoor unit power connection
(Power off and on).
YES
Correct signal wire connection
between indoor unit and outdoor unit.
Check MCC-1696 P.C. board.
→ Replace it if necessary.
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