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[E04 error] <In case of 4-Way Air Discharge Cassette Type>
Does outdoor operate?
Is group address setup of
remote controller correct?
Are wiring in indoor unit and
1, 2, 3 inter-unit wires correct?
Are wirings of terminal blocks
(1, 2, 3) wired to CN04 normal?
Does D502 (Orange LED) flash
after power supply turned on again?
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 wires.
Check CODE No. [14].
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO