Judgement Of Trouble By Every Symptom - Toshiba Carrier RAS-12EKCV-UL Service Manual

11-5. Judgement of Trouble by Every Symptom

11-5-1. Indoor unit (Including remote controller)
(1) Indoor unit is not operated.
(RAS-09EKCV-UL)
NO
Is fuse (F01)
of indoor control
board blown?
NO
Is voltage
(DC 12V or 5V)
indicated on
indoor
control board
normal?
NO
T ur n off power
supply once, and 5
second later, turn it
on again.
Is OPERATION
lamp blinking?
YES
Is it possible to
turn on
Indoor unit by
NO
pressing
[ ] button
on remote
control?
YES
Parts
(DB01,C27,T01
YES
and IC02)
are defective.
Does
Connection between
YES
main PC Board
and display PCB are
connect properly ?
NO
Reconnect housing
Does
transmission
mark on
NO
remote control
flash normally,
and is its signal
transmitted
properly?
YES
YES
Microcomputer
is defective.
75
– –
FILE NO. SVM-13071
Operation
Check item
Conceivable principle
Measure
Item by symptoms
Remote control is
defective.
Refer to (5)
"Troubleshooting for
Remote Control. "
Unit operates
Replace main
P.C. board.
cause
normally.