SiSG121917E
Troubleshooting for Wall Mounted and LSP Duct Type Indoor Unit
Part 6 Service Diagnosis
120
Note(s)
Reference
Rubber cushion
The rotation pulse is the feedback signal from the indoor fan motor.
Check No.03
Refer to P.170
25/35/50 class
60/71 class
R6000306
Check No. 03
Check No. 03
Check No. 03
N
O
YES
YES
YES
N
O
N
O
YES
N
O
Is the rotation p
u
lse
generated?
T
u
rn the po
w
er on again.
Check the fan motor for
b
reakdo
w
n or short circ
u
it.
Check the motor control
v
oltage.
Check the indoor
u
nit PCB for
rotation p
u
lse.
Fan rotates smoothly?
Resistance OK?
Is the motor control
v
oltage 15 VDC
generated?
Replace the indoor fan motor.
Replace the indoor
u
nit PCB
(control PCB).
Replace the indoor fan motor.
Replace the indoor
u
nit PCB
(control PCB).
YES
N
O
N
O
A
b
normal
so
u
nd occ
u
rs?
Is the r
ubb
er c
u
shion
properly fitted?
YES
Correct the position of
r
ubb
er c
u
shion or replace
the r
ubb
er c
u
shion.
Replace the
b
earing r
ubb
er
c
u
shion.
A
Contin
u
ed from the
pre
v
io
u
s page
(R24945)
(R25226)
R
ubb
er
c
u
shion
Bearing
r
ubb
er
c
u
shion
R
ubb
er
c
u
shion
Bearing
r
ubb
er
c
u
shion
