Carrier RAV-SP180UT-UL Service Manual page 80

[E04 error] <In case of 4-Way Air Discharge Cassette Type>
Does outdoor operate?
YES
Check indoor P.C. board.
Defect → Replace
NO
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 outdoor P.C. board.
Defect → Replace
– 80 –
NO
YES
NO
YES
NO
YES
NO
YES
Check CODE No. [14].
Correct wiring and
inter-unit wires.
Correct wiring of connector
and terminal blocks.
Check indoor P.C. board.
Defect → Replace