G51MP-36C-090-1 Lennox Gas


Old 10-08-19, 10:46 AM
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G51MP-36C-090-1 Lennox Gas

sometimes the igniter will heat up but the burner will not ignite. Repair man says it's my control board that is bad.
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Old 10-08-19, 12:25 PM
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you have to see if the gas valve is getting power after the igniter warmup period.
Old 10-08-19, 01:05 PM
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Welcome to the forums.

There is a 12 pin plug on that board. Those plugs/receptacles get corroded with age. Sometimes just unplugging it a few times is all that's needed. You could spray just the plug with a small bit of contact cleaner or WD40. Plug-unplug it a few times.

The same problem can also happen on the gas valve if it uses that similar white plug.
Same repair for that end.
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