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2. TROUBLESHOOTING
(1
)
Operation
does
not start.
MS-09DW-[IT]
Start
Check
power
supply voltage on
indoor
terminal
block.
Is there
11 5V
AC between indoor
terminal
block
[IT]
-
IT£]
?
Yes
Does"§'signal
mark display
for
an
instant
on Remote Controller when
POWER
button
pressed ?
Yes
Does emergency
run
start by
pressing
EMERGENCY
button ?
No
No
No
Turn
on power supply
Is
Batteries
voltage
over 2.4V
7
Yes
Yes
Replace
Remote controller
29
Does indoor
u
nit receive signal
with a beep
tone when POWER
button pressed
?
Check voltage
of connector on
Electronic control
P.
C.
Board.
Is there 1OV
DC
between connector
CN1O1®
-
CTl?
See the TEST POINT DIAGRAM VOLTAGE
on page
37.
No
Yes
Replace
Electronic
control P. C. board.
Replace Receiver board.
Check
fuse
and varistor.
If
t he
parts are
not
good, replace t he
faulty
parts.
If the parts are normal,
replace
Power
P.C. board.
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