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Troubleshooting
11. Igniter Glows, Sensor Opens But No Ignition – White Rodgers Glow-Bar
Ignition Gas Models
Igniter Glows, Sensor
Opens But No Ignition -
White Rodgers Glow-bar
Ignition Gas Models
Is manual
shut-off valve
in full open
position?
Check
gas pressure.
Is there gas
flow but no
ignition?
Gap between igniter
and burner must be
1/8 to 1/4 inch.
Is there no
gas flow
through gas
valve?
Check for 80 – 120 volts between red
and white wire on gas valve.
If correct voltage is present and
redundant coil does not click open,
replace complete gas valve.
If correct voltage is not present,
replace diode logic board.
If correct voltage is present and
redundant coil clicks open, check for
40 – 60 volts across the purple wires
on the main coil after the igniter
cycles off.
If voltage is present and main coil
does not st
ay open, replace main coil.
If no voltage is present, replace
diode logic board.
•
•
•
•
•
•
Ye s
Ye s
No
Ye s
TMB2140S
Is gas supply
insufficient?
No
Ye s
No
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