Carrier RAV-SP180UT-UL Service Manual page 81

[E04 error] <In case of Under Ceiling Type>
Does outdoor unit operate?
YES
Check indoor P.C. board (MCC-1402).
Defect → Replace
[E10 error]
Is there no disorder of power supply?
NO
Check indoor control P.C. board.
Defect → Replace
NO
Is setup of group address correct?
YES
Are 1, 2, 3 inter-unit wires normal?
YES
Are connections from connectors
of inter-terminal blocks (1, 2, 3)
of indoor/outdoor units normal?
YES
Does voltage between 2 and 3
of inter-terminal blocks (1, 2, 3)
of indoor unit vary?∗
YES
Does case thermo. operate?
NO
Check outdoor P.C. board
Defect → Replace
YES
NO
NO
NO
NO
∗ As shown in the following figure, perform measurement
within 20 seconds after power ON.
Black
White
Inter-terminal block
YES
– 81 –
Check CODE No. [14].
Correct inter-unit wire.
Correct connection of connector.
Check indoor P.C. board
(MCC-1402).
Defect → Replace
S5277G
3
2
1
Check/Correct charged
refrigerant amount.
Check power supply voltage.
Correct lines.
Check and eliminate noise, etc.