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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Mod FC8S When turned on induced draft motor runs - ignitor

Customer Question

Mod FC8S When turned on induced draft motor runs - ignitor heats up first gas tube fires up (and sometimes 2nd tube also) Then 15-20 seconds unit shuts down. Every 20 tries or so all tubes fire and furnace operates normally. First use in winter
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: Yes - both
JA: Do you plan on doing the work yourself?
Customer: don't know
JA: Anything else we should know to help you best?
Customer: Can't think of more
Submitted: 9 months ago.
Category: HVAC
Expert:  Gaztech replied 9 months ago.

Welcome to Just Answer, my name is Luke

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