Replace P.C. board.
Is receiver on
indoor unit exposed
to direct sunlight?
Batteries are exhausted.
Press START/STOP button.
Is there any thyristor
fluorescent light
nearby?
Does indoor unit
operate when
moving remote
control near receiver
or indoor unit?
P.C. board is defective.
Is transmission mark
indicated?
Press RST button on remote
control with tip of pencil.
Press START/STOP button.
Does radio sound is
affected by remote
control when a
signal is transmitted
at distance of 5 cm
from radio?
Does indoor unit
start to operate by
automatic restart
function?
Is transmission mark
indicated?
Does indoor unit
beep and operate?
Remote control is
defective.
Keep indoor unit away
from thyristor
fluorescent light.
Avoid direct
sunlight.
Replace
batteries.
Normal
operation
Replace remote
control.
The unit does not beep at all.
OPERATION indication on
indoor unit is not indicated.
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
YES
Summary of Contents for NBFS-48IDU
Page 3: ...1 Summary ...
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Page 8: ...use of remote controller ...
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Page 21: ...3 indoor explosive view for 40k ...
Page 22: ...outdoor explosive view for 40k ...
Page 24: ...5 CIRCUIT DIAGRAM 43K INDOOR ...
Page 25: ...43K OUTDOOR ...