Does Ignit
er Spark?
20
Pr
ob
le
m
11
H
ea
te
r
D
oe
s
N
ot
LL
ig
ht
Is
Pr
oper V
oltage
being sent fr
om
ON/OFF Switch t
o
High Limit Switch?
Is an
Audible “Click”
Hear
d When Solenoid
Valv
e is Supplied Voltage?
Check f
or V
oltage
and R
esistance of
Switch and Electrical
Leads Betw
een
Switches and Ignition Contr
ol. R
eplace if
Def
ectiv
e.
Ye
s
No
Ye
s
Inner Combustion Cone , V
enturi
Tube or Main Burner Orif
ice are
Plugged with Dir
t. Clean the
Heat
er A
ccor
ding t
o Prescribed
Cleaning Methods in Owner’s Manual
Is High
Limit Switch Sending
Voltage t
o Ignition
Contr
ol?
Check f
or T
ripped High
Limit Switch. A Limit Switch T
rips Due T
o:
-- Ex
cess Gas Pressure
-- Heat
er No
t Cleaned
-- Heat
er No
t Pr
operly
Hung.
R
eset the High Limit
Switch and Det
ermine
Cause of T
ripping.
No
No
Is ON/OFF Switch
on Heat
er P
ositioned
to
ON?
Position the Switch t
o ON.
Ye
s
No
Is
Pr
oper V
oltage
Supplied t
o Heat
er
Po
w
er Cor
d?
Pr
ovide Pr
oper V
oltage
to
P
ow
er Cor
d.
- Check Cir
cuit Break
er
s
- Mak
e sure building
en
vir
onment contr
ol
thermostat is w
orking
pr
operly and calling f
or
heat
Ye
s
No
Ye
s
No
Ye
s
R
eplace Gas Solenoid
Valv
e
R
emo
ve
Ignit
er A
ccor
ding t
o
Instructions in this Owner’s Manual - Check it f
or Cracks in its
Ceramic Base
- Clean Ignit
er Electr
ode
with Emer
y Clo
th or St
eel
W
ool
- Check Gap of Ignit
er t
o
Burner Cone. Should be .1
00 - .200 in.
Is Pr
oper
Voltage Being
Sent thr
ough P
ow
er
Cor
d t
o On/Of
f
Switch?
Ye
s
No
Check all Leads of
Po
w
er Cor
d f
or
R
esistance.
R
eplace P
ow
er
Cor
d if Necessar
y.
Is Pr
oper V
oltage
Supplied t
o Solenoid
Valv
e on Heat
er?
R
eplace Ignition
Contr
ol A
ccor
ding t
o
Instructions in this Owner’s Manual
No
Ye
s
Summary of Contents for I17
Page 2: ......
