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What is model on furnace?
Let's turn power off to furnace to reset board.Then back on and call for heat. Tell me how far in sequence it goes and first code we get.
The normal sequence of operation:
Inducer vent motor comes on
Pressure switch closes
Main circulating blower comes on
We should not get the 4/3 error unit furnace has started and failed at least 3 consecutive times.
Do you get any other codes before that on first failure?
Have you tried cleaning flame senser? If not lets try that
Sorry I am unable to text.The website does offer phone call service for an additional fee of 18.00.If you select the additional service offer, you may get a different technician.Accepting the offer automatically charges you for the question as well as the additional 18.00 phone call fee. We can work here until finished at no additional fee.If you do want a phone call and don't mind the extra fees let me know ,otherwise we will continue here
Do you know where flame senser is and how to clean it?
Yes, That is fine, It will be a single steel rod with one wire attached and stick in front of farthest burner from ignitor.You can clean it using a dollar bill or fine sand cloth.h
About to leave for the night.Will open to other experts so you don't have to wait.
Now you have both an igniter and a flame sensor.as what you cleaned a single rod with one wire?