Miller Furnace - Only 2 of 4 burners ignite, furnace shuts down


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Old 01-17-11, 09:18 AM
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Miller Furnace - Only 2 of 4 burners ignite, furnace shuts down

The furnace starts it process when there is a heat demand - blower starts, the flame ignites, the first two burners ignite, the second two do not, then the furnace stops. It then cycles through this process again with the same results. The status light flashes 4 times indicating "Ignition Failure (Check Ground)"

The furnace was installed 11/2007 and is a direct vent (sealed combustion) forced air gas furnace -
Miller M3RL Series 90+ Downflow Condensing furnace (BW Model)

Any thoughts?
 
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Old 01-17-11, 01:38 PM
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95% of the time the burners are dirty and need to be taken out and cleaned. 5% of the time you don't have adequate gas pressure which prevents the burners from lighting reliably.
 
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Old 01-17-11, 09:50 PM
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Ok, thank you! I've not worked on a furnace other than cleaning it and trying to look for what's wrong. Is cleaning the burners a pretty straight forward (easy) job?

Again, thanks!
 
 

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