Service manual

(1) Operation does not start
MS-O9DW -
MSH-OSDW - lUll
Does+signal mark display for an instant
on Remote Controller
when POWER button
No
pressed?
1 \
Check power supply voltage on indoor
Yes Is
Batteries voltage
over
2.4V ?
Does emergency run start by
No
pressing EMERGENCY button
7
terminal bed. No
Is
there 1 15V AC between indoor
c
tes
Turn on power supply
Replace Remote
----"--
I'
terminal bed - ?
I
Chedc voltage of control circuit
on Electronic control P.C. board.
Is
there IOV DC between connector
CNlOl (pow)
@+) - @-) for MS09, @+) - @-I for MSH-09.
See the TEST POINT DIAGRAM . VOLTAGE on page 38 for MS09, page 40
for MSH-09.
I
Replace Electronic
control
P. C. board.
I
Does indoor unit receive siganl
with a beep tone when WWER
ko
Redace Receiver board.
/
\ button pressed ? I J
Power P.C. board.
*