Troubleshooting
SiE12-411
172
Service Diagnosis
5.5
Fan Motor or Related Abnormality
5.5.1 AC Motor
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Malfunction
Decision
Conditions
When the detected rotation speed is less than 50% of the HH tap under maximum fan motor
rotation demand.
Supposed
Causes
"
Operation halt due to short circuit inside the fan motor winding.
"
Operation halt due to breaking of wire inside the fan motor.
"
Operation halt due to breaking of the fan motor lead wires.
"
Operation halt due to faulty capacitor of the fan motor.
"
Detection error due to faulty control PCB.
Troubleshooting
Check No.16
Refer to P.213
Rot
a
te the f
a
n
b
y h
a
nd.
Check No. 16
Check H
a
ll IC
Oper
a
te the f
a
n.
Doe
s
it rot
a
te?
NO
Doe
s
it rot
a
te
s
moothly?
I
s
there
a
n o
u
tp
u
t?
I
s
it
a
t the r
a
ted volt
a
ge?
∗
I
s
there cond
u
ctivity?
NO
Check the c
a
p
a
citor'
s
cond
u
ctivity
Check the f
a
n motor volt
a
ge.
(immedi
a
tely
a
fter re-
s
t
a
rt)
I
s
it
a
t the r
a
ted volt
a
ge?
∗
Check the f
a
n motor volt
a
ge.
NO
NO
NO
NO
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
Repl
a
ce the f
a
n motor or control
PCB.
Repl
a
ce the f
a
n motor
Repl
a
ce control PCB.
Repl
a
ce the f
a
n motor.
Repl
a
ce the control PCB.
∗
Me
asu
re the volt
a
ge
b
etween
the red
a
nd
b
l
a
ck le
a
d wire
s
of
the f
a
n motor,
a
nd check if the
m
a
xim
u
m volt
a
ge re
a
che
s
the
r
a
ted volt
a
ge.
Repl
a
ce the c
a
p
a
citor.
(Repl
a
ce the control PCB.)
Repl
a
ce the f
a
n motor.
(R
3
219)
Caution
Be
su
re to t
u
rn off power
s
witch
b
efore connect or di
s
connect connector,
or p
a
rt
s
d
a
m
a
ge m
a
y
b
e occ
u
rred.
Summary of Contents for Super Multi NX C-Series
Page 6: ...SiE12 411 Table of Contents v Index i Drawings Flow Charts v...
Page 7: ...SiE12 411 vi Table of Contents...
Page 67: ...Specifications SiE12 411 56 Specifications...
Page 171: ...Instruction SiE12 411 160 System Configuration...
Page 225: ...Check SiE12 411 214 Service Diagnosis...
Page 295: ...SiE12 411 iv Index...
