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Old 12-02-2023, 07:34 AM   #3
Daryles
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Join Date: May 2019
Location: Alton
Posts: 2,768
M.O.C. #24086
Reading through your last thread about the problem, so far you have changed:
The sail switch
The motor
The squirrel cage, fixed it.

If NOW the furnace lights and runs then quits, it could be the black self resetting fuse. Swap it with a regular 15A blue one. Simple check.
If that doesn't help, I would remove the flame sensor/igniter and clean it. Clean the burner while you have it out.
Make sure the igniter gap is correct. VERY IMPORTANT.
Next is the high temperature limit switch. Remove, clean test.
Next is the control board. If you feel you need a new control board, order a "Dinosaur" board. Very good quality and reliability.
Download the Service manual from the files section. It has detailed troubleshooting steps.
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2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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