Toshiba RAV-GM301ATP-E, Service Manual

Page: 53 / 113

[E04 error]
• Measure within
20 seconds
from power on.
Does outdoor unit work?
Check indoor unit board.
→
Replace defective board.
Check power supply voltage.
Correct lines.
Check and eliminate noise, etc.
Is there no disorder of power supply?
Is case thermostat sensor working?
Is group address set correctly?
Is indoor unit switch SW02 setting correct?
Bit 1: OFF
Bit 2: OFF
Check indoor control P.C. board
(MCC-1
696
).
Defect
→
Replace
Are connectors from indoor unit
and outdoor unit connected normally?
Correct connector connection.
Is 280V DC applied across IPDU
main circuit capacitor?
Replace IPDU.
Is case thermostat sensor connected?
(CN500)
Check and correct
refrigerant volume.
Correct connector connection.
Check CODE No. “14”.
Are L1/L2/S wires normal? Correct wires.
Is 280V DC supplied to CDB? (CN03) Replace IPDU.
Does voltage between indoor unit terminal
L2 and S fluctuate? (0-140V DC)
Check MCC-1
6 9 6
P.C. board.
→
Replace it if necessary.
Is 7V DC supplied to CDB?
Is CN06 – CN800 connection normal?
Replace IPDU.
Correct connector connection.
Correct switch setting on
MCC-1
6 9 6
P.C. board.
Check MCC-1
6 9 6
P.C. board.
→
Replace it if necessary.
Check CDB.
→
Replace it if necessary.
+
|
3
2
1
Black
White
Terminal block
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
NO
NO
[E10 error]
FILE NO. SVM-18059
- 53 -