Troubleshooting For Each Check Code - Toshiba RAV-SM562KRT-E Service Manual

Troubleshooting (Continued)

3. Troubleshooting for Each Check Code

Check code
[E01]
(New code)
Are R/C wires
A/B correct?
YES
Improper harness
connection from
I/U terminal block?
NO
Group control
operation?
YES
Are all indoor
units powered ON?
YES
Is R/C powered ON?A/B
terminals: Approx. 18VDC
YES
Is "no header"
set by double R/C?
NO
Check code name
I/U - R/C communication error
(detected by R/C)
NO
YES
NO
NO
NO
YES
AImproper R/C wire connection
BFailure of I/U power supply
CFailure of I/U board
DInvalid R/C address setting
EFailure of R/C board
– –
37
Possible causes
Correct R/C wires.
Correct connector connection.
Check circuit wiring.
Check I/U power connection
(power off and on).
Check I/U boards.
→ Replace defective board.
Correct one header/one follower.
(R/C address connector)
Check R/C board.
→ Replace it if necessary.