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25
R
epair
.
Is
Air
-Pr
o
ving Switch
Stuck Open? Check
Continuity
.
Ye
s
Ye
s
R
epair or
R
eplace.
Is F
an Binding?
No
No
Ye
s
Is Air
flo
w
Switch Binding?
R
eplace Air
-Pr
o
ving Switch.
No
Is F
an Loose On
Mo
tor Shaf
t?
Ye
s
Tight
en F
an Blade Set Scre
w
Is Pr
oper
V
oltage Supplied
to
F
an Mo
tor?
No
Ye
s
Def
ectiv
e Mo
tor or
Capacit
or
. R
eplace
Mo
tor or Capacit
or
Is
Ignition Contr
ol
Module Sending Pr
oper
V
oltage t
o
Mo
tor
R
ela
y?
Is
Ignition Module
R
eceiving Pr
oper
V
oltage?
No
No
R
eplace Mo
tor R
ela
y.
Ye
s
Def
ectiv
e Ignition Module.
R
eplace Module.
Ye
s
Def
ectiv
e Wiring or
Connections t
o
Mo
to
r
R
epair or R
eplace
Wiring and Connections
No
Pr
o
vide Pr
oper V
oltage,
Check Electrical Supply
,
Cir
cuit Break
er
s, Etc.
Ye
s
Is
F
an Belt Loose?
No
Does F
an Belt
Slip?
No
Ye
s
Are F
an Pulle
ys
Loose?
No
Ye
s
Tight
en F
an A
ccor
ding t
o
Prescribed Methods in this
Owner’s Manual.
F
an Belt is W
orn or Has
Dir
t on Side
w
all of Belt.
Check Shea
v
es f
or Dir
t or
F
oreign Mat
erials.
Tight
en Pulle
y Set Scre
ws.
Is
Pr
oper
V
oltage Supplied t
o
Heat
er P
o
w
er
Cor
d?
Ye
s
No
Ye
s
Check Bearing(s).
R
eplace Bearings if
Necessar
y.
Is Shaf
t
Seized Up in F
a
n
Bearings?
Two T
imes
Indicates Lack
of Air Proving in
Fan Section of
Unit.
Flash Pattern
Begins W
ithin
90 Seconds
After Condition
Occurs.
No