Form 43471000
Sept 2011
-31-
Call for heat ends and the heater shut
s of
f?
Y
es
No
Troubleshooting ends.
Thermost
at is not
working properly
.
Replace it if necessary
.
Is the green light still on?
Y
es
No
T
urn of
f gas &
electricity immediately
.
Replace the gas valve.
Remove valve lead at ignition module. Does valve close?
No
Y
es
Recheck thermost
at
and wiring.
T
roubleshooting
continued from the previous p
age.
T
roubleshooting
continued from the previous p
age.
Check the sp
ark gap.
Is it 3/16?
No
Y
es
Adjust the sp
ark gap
to 3/16.
Has all the air been purged from the gas supply lines?
No
Y
es
Purge the gas supply line.
Check the inlet pressure to the gas valve. Is it between minimum and maximum for the gas type?
No
Y
es
Adjust supply gas pressure. Rest
art
troubleshooting.
Check the manifold gas pressure during st
artup. Is it zero
inches?
Y
es
No
Replace gas valve.
Af
ter an initial step
opening, is the manifold gas pressure correct?
No
Y
es
Adjust manifold gas pressure. Rest
art
troubleshooting.
Call factory for assist
ance.
Check orifice and holder for blockage (i.e. spider web). Is there any blockage?
Y
es
No
Clear blockage.
