Toshiba RAS-24UKHP-ES-1 Service Manual page 58

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