| Re: [GMCnet] Visitor Needs Suburban Help [message #367549 is a reply to message #367543] |
Fri, 12 November 2021 08:11   |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma:
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The first thing to happen when thermostat calls for heat is the fan motor comes on. The fan motor also runs the draft inducer off it’s opposite shaft. This satisfies the draft sail switch. The board then times about a 15 second delay followed by ignitor and gas valve opening. You can ask how many of these telltale sounds are happening and diagnose from there from that info. More detail on model info so they can get the manual would help.
John Lebetski
Woodstock, IL
77 Eleganza II
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