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( I
)
Operation does not start
(Stan)
I
Check power supply voltage on indoor
terminal block.
Is there 1 15V AC between indoor
Turn on power supply
terminal block
[IT] -
?
Yes
/
\
Does+signal mark appear for an instant
on Remote Controller when POWER button is
pressed ?
Yes
,
Is battery voltage
over 2.4V ?
Does emergency run start by
No
pressing EMERGENCY button ?
Yes
Replace Remote controller
Check Electronic control P.C. board voltage.
a) CN102
@ - @
: 12-20VAC
b) CN109@+
-
0-
: 5V
See the TEST POINT DIAGRAM VOLTAGE on page
3 7 .
Replace Electronic
control P.C. board.
.
Does indoor unit receive signal
with a beep tone when POWER
Replace Receiver board.
button is pressed ?
Check power P.C. board
qvOltag
CN204
0
-
@ :
Replace
Power P. C. board
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