Toshiba RAV-SP1100UT-E Service Manual page 50

[E04 error]/[04 error]
Does outdoor unit operate?
YES
Check indoor P.C. board
(MCC-1402).
Defect Replace
Check CDB.
Defect Replace
NO
Is setup of group address correct?
YES
Are 1, 2, 3 inter-unit cables 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
Is DC280V applied between
terminals of electrolytic capacitor
of IPDU main circuit?
YES
Is DC7V power supplied to CDB?
Are cablings between Pin 2 and Pin 5
of CN800 and between IPDU
and CDB normal?
YES
Is case thermo (CN500) connected?
YES
NO
Does case thermo operate?
YES
Check/Correct charged
refrigerant amount.
NO
NO
NO
NO
As shown in the following figure,
*
perform measurement within
20 seconds after power ON.
Black
White
Inter-terminal block
NO
NO
NO
50
Check item code [14].
Correct inter-unit cable.
Correct connection of connector.
Check indoor P.C. board
(MCC-1402).
Defect Replace
S5277G
3
2
1
Replace IPDU.
Replace IPDU.
Correct connection of connector.
Correct connection of connector.