Troubleshooting
SiBE04-101
92
Service Diagnosis
Troubleshooting
Check No.35
Rerer to P.127
Check No.37
Rerer to P.127
Replace the fan motor.
Note:
The motor may be broken
if the connector will be
removed as the power is
kept supplied.
The power should be
turned off in case a
connector will be
connected.
Replace the indoor unit
PCB (1) .
Replace the indoor unit
PCB (1) .
Replace the fan motor.
Replace the indoor unit
PCB (1) .
Replace the indoor unit
PCB (1) .
1
1
Rotate the fan by hand
Operate the fan.
Remove the fan motor's
connector S201 to
operate.
Check No.35
Check the output of the
indoor unit's PCB(1).
Is the
output of the fan
motor's power supply
voltage found?
Is the
output of the motor
control voltage DC
15V found?
Does it rotate?
Stop the fan.
Is the
pulse input
found?
Is
the output of
the rotation command
voltage from DC1V
to 6.5V?
Check No.37
Check the rotation pulse
input on the indoor unit's
PCB(1).
Does it rotate
smoothly?
(R1233)
YES
YES
NO
YES
YES
NO
NO
NO
YES
YES
NO
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
SiBE04-101.book Page 92 Monday, October 15, 2001 3:08 PM