Trouble Shooting
Main Burner will not
light (with valve in
“on” position)
Is Pilot lit
no
Light pilot
Yes
Check Thermopile voltage
at terminals marked
TP on valve. Should be
approximately 200 mv
with switch “on” and
approximately 400 mv with
switch “off”.
too low
Replace Thermopile
Check switch, wires, and
wiring connectors.
Correct problem
Replace valve
OK
OK
bad
33