22
Tw
o Times
Lac
k of air
pr
oving in fan
section.
Are air
-pr
oving switch
contacts stuck open? (P
er
form continuity
check
.)
Does
fan mo
tor star
t up
for prepurge
during initial call
for heat?
Is f
an wheel binding?
Is f
an wheel
loose on mo
to
r
shaf
t?
Ye
s
Ye
s
Ye
s
No
Check f
or binding of
air
-pr
oving switch arm
on housing, R
epair or
replace as necessar
y.
Ye
s
Ye
s
Check f
or pr
oper clearance of
fan wheel t
o mo
tor mount. If
good, replace f
an wheel, or
check f
or housing alignment.
Tight
en set scre
w(s) on f
an. Mak
e
sure set scre
w(s) are tight
ened
against flat(s) of mo
tor shaf
t.
Ye
s
Clean the f
an wheel with
com
pressed air or sof
t brush.
Ye
s
R
emo
ve
obstruction.
Clean as necessar
y.
No
Is f
an wheel
plugged with
dir
t?
Is there an obstruction
in blo
w
er outlet pre
venting
air
-pr
oving switch closure?
No
Are 220 v
olts sent
fr
om ignition
contr
ol t
erminal
IND t
o mo
tor?
No
If im
pr
oper v
oltage is supplied,
contact electrician.
- OR -
If no v
oltage is supplied t
o mo
to
r,
check wiring be
wtw
een mo
tor and
ignition contr
ol. If good, replace contr
ol.
No
Ye
s
Are 2
4
v
olts supplied
fr
om t
erminal PSI on
contr
oller t
o the air
pr
oving switch?
Check wiring betw
een ignition contr
ol
and com
ponent. R
epair or replace
as necessar
y.
If wiring is good,
replace ignition contr
ol module.
No
Def
ectiv
e mo
to
r.
R
eplace mo
to
r.
Ye
s
Are 2
4
v
olts returned
fr
om air pr
oving
switch t
o t
erminal
PSO on contr
oller?
No
Def
ectiv
e ignition
contr
ol. R
eplace
ignition contr
ol.
No
No
Def
ectiv
e air pr
oving switch.
R
eplace switch.
Содержание AD100
Страница 26: ...Parts Identification PARTS SCHEMATIC AD060 AD100 26 ...
Страница 28: ...28 Parts Identification PARTS SCHEMATIC AD250 ...
Страница 30: ...30 Parts Identification PARTS SCHEMATIC AD325 ...
Страница 58: ...27 26 零件标识 零件示意图 AD060 AD100 ...
Страница 60: ...零件标识 零件示意图 AD250 28 ...
Страница 62: ...30 零件标识 零件示意图 AD325 ...