Candle flame at all orifices after cycle....

Old 01-24-21, 06:39 PM
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Candle flame at all orifices after cycle....

Hello, last October installed a new Goodman GMSS 96 single stage furnace converted it to LP has ran great until today.... had the 6 blinking lights hi limit signal, got the top cover off and had candle like flames at all the burner orifices, shut the valve off on the main line going to the furnace and cycled it a few times, starts up goes through proper sequences fires And burns like normal then every time after thermostat is satisfied and gas is shut down I get a flame at the orifices that looks like a light or candle flame for 5 - 10 seconds....I live in the middle of no where and it will cost a ton to have someone come look at it, looking for any advice before I make that call, really appreciate any response!!! Furnace worked with no issues all last winter and for the last 4 months!
Old 01-24-21, 07:52 PM
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Welcome to the forums.

Who converted the furnace to propane..... you or a technician ?
Was the manifold pressure checked and set ?
A 6 fault code is flame rollout. That can be pretty dangerous.
Typically means the furnace is over firing or the flue is plugged or restricted.
Could also be a soot clogged secondary heat exchanger.

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