Toshiba RAV-HM301MUT-E Service Manual page 57

[E04 trouble]
Does outdoor operate?
YES
Replace indoor P.C. board.
NO
Is group address setup of
remote controller correct?
Are wiring in indoor unit and
1, 2, 3 inter-unit cables correct?
Are wirings of terminal blocks
(1, 2, 3) wired to CN67 normal?
Does the voltage between 2 and 3
of terminal blocks (1, 2, 3) vary?
Replace outdoor P.C. board.
NO
YES
NO
YES
NO
YES
NO
YES
As shown in the following figure,
carry out measurement within 20 seconds
after the power was turned on.
Black
White
Terminal block
– 57 –
Check CODE No. [14].
Correct wiring and
inter-unit cables.
Correct wiring of connector
and terminal blocks.
Replace indoor P.C. board.
(MCC-1643)
S5277G
3
2
1