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(1) Operation does not
start.
MF15EN
(~sta,---------rt)
Check
power
supply
voltage on
indoor
terminal
block.
Is there 11
5V AC between
indoor
terminal block
[!JJ
-
[NJ
?
Yes
Does<;§> signal
mark
display
for
an instant
on
Remote Controller when POWER bunon
pressed ?
Yes
Does
emergency
run start by
pressing
EMERGENCY bunon
?
Yes
No
No
No
Turn
on power supply
Is
Baneries
voltage
over 2.4V
7
Yes
Replace Remote controller
Replace the
baneries
Check Electronic control P. C. board
voltage.
31
Does
indoor unit
receive
signal
with
a
beep tone when POWER
bunon pressed
?
a) CN101
@ 1 +l -
<z:}-l
:
12~17VDC
(relay)
b) CN101
@
1
+l
-
(VI-I
: 10VDC
c)
CN101
@
1
+l
-
®H
:
5VDC
·See
the
TEST
POINT
DIAGRAM
VOLTAGE
on page 40.
No
Yes
Replace Electronic
control
P.C. board.
Replace
Receiver
board.
Replace
Check power
P.
C. board
voltage.
CN204
Q)
-
@:
12~
18VAC
No
Replace
Transformer
Power
P. C. board
_)
J
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