– 30 –
Normal
Turn OFF the power
(“REMOTE CONTROL” position)
Turn ON the power
(“REMOTE CONTROL” position)
Does the fan stop at the
operation stop condition?
Start operation at HIGH cooling
Does the fan rotate?
Change the setting
to LOW cooling
Does the rotating speed
of the fan lower?
Replace the
P.C. board
Motor control
circuit failure
(lC01, 05, D04) or
12V power circuit
(Q03, D01) or
thermal fuse failure.
Control P.C. board failure
Turn OFF the power
Does 120V AC or higher
voltage apply to between red and
black lead of the motor?
Turn ON the power
Stop the
operation
Is it possible to rotate the
cross flow fan by hand?
Motor circuit (D03, Q06, IC01)
or 12V power circuit
(Q03, D01) failure
When rotating the
cross flow fan by hand at
the operation stop condition,
is the rotation signal (+12VDC
0V)
detected between (2) (gray lead)
and (3) (brown lead) of the motor
connector (PJ13 or CN13)?
(1 pulse/1 revolution)
Repair the
cross flow fan
Replace the
fan motor
Replace the
control P.C. board
NO
YES
YES
YES
NO
NO
YES
NO
YES
YES
NO
NO
9-3-2. Only the Indoor Fan does not Operate
< Preliminary checks >
Does it neither work in COOL or FAN ONLY operation?
< Checking procedure >
