FILE NO. SVM-03009
– 56 –
<Inspection procedure>
-Cooling and heating model-
Are TD and TE sensors normal?
(TD=17.9k
Ω
at 50
°
C)
(TE=10k
Ω
at 25
°
C)
Is it possible to start
unit by remote control?
Is it possible to detect
DC 15
−
60V between
2
and
3
on terminal block?
Is crossover cable normal?
Is it possible to detect
AC 12V on secondary side
(CN06) of transfer?
YES
YES
YES
YES
YES
YES
YES
Turn on power supply.
Does OPERATION
lamp blink?
YES
NO
Refer to item Power
can not be turned on .
NO
NO
Refer to 9-9 Troubleshooting
for Remote Control .
Connect crossover
cable properly.
NO
Replace transfer.
NO
Replace outdoor
P.C. board.
Replace sensors.
NO
Replace outdoor
P.C. board.
NO
Replace MG switch.
NO
Check TA and TC sensors
or refer to 01
−
04 in Table 9-4-1.
Does MG switch operate?
Is it possible to detect
DC 5V at IC61 and 12V at IC51?
Is it possible to detect
AC 220
−
240V at CN11?
(Next Page)