I have an Armstrong Ultra V tech 80 something or another furnace, circa 2001 or 2006 can't remember off the top of my head. 2 years ago it was doing exactly the same thing you described. Draft inducer kicked on, flame comes on, no blower though causing it to overheat and shut off. Once it cycled enough it'd kick on and run with no issues for a few times then do it all over again. If I selected to just run it in fan mode it would go with no issues. Selecting fan, letting it run for a few minutes, then clicking it to heat also resulted in no issues.
The relays on the board had started to stick open. Apparently if the blower was already running it had an easier time closing that particular relay. $95 for a new board that I put in myself (bought with help from an HVAC business owner/friend in another state) and it's not been an issue since *knock on wood*
The relays on the board had started to stick open. Apparently if the blower was already running it had an easier time closing that particular relay. $95 for a new board that I put in myself (bought with help from an HVAC business owner/friend in another state) and it's not been an issue since *knock on wood*