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[E04 trouble]
Does outdoor operate?
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?
Check indoor P.C. board.
Defect
→
Replace
Check outdoor P.C. board.
Defect
→
Replace
Check indoor P.C. board.
Defect
→
Replace
Correct wiring of connector
and terminal blocks.
Correct wiring and
inter-unit cables.
Check CODE No. [14].
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
(MCC-1643)
As shown in the following figure,
carry out measurement within 20 seconds
after the power was turned on.
Black
S5277G
White
Terminal block
3
2
1
