This is the third season for this furnace, at some point of the winter teh same thing happens. This is a 2 stage unit, blower comes on, ignites for about 10 seconds then shuts down. Installer, installeda jump wire the first yer, last year they replace a computer type unit and removed what they did the first year. I replaced the thermostat towards the end of last winter and was OK, now the problem started again.
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