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There is a "flame" sensor adjacent to the burner. It looks like a little short rod. When the flame touches the little rod it senses that the burner is, in fact, producing fire and is not releasing unburned gas. The sensor will sometimes get corrosion and not sense the flame, which turns the gas off. This is an easy fix and doesn't require any parts. Take a small piece of 320 grit sandpaper and scrub the sensor rod to remove the oxidation (corrosion) until it is again bright shiny. The flame will then stay on.
You did quite a bit of work. One other thing that controls the ignitor is called the flame detector. Its the black box looking thing mounted on the side of the big pipe the flame shoots into. Should be 2 wires going to it. A quick test to see if the ignitor comes on is to tie the 2 wires together. If you see the ignitor come on thats the bad part,
If the coils are bad the unit will light with flame for 4 - 8 times then all of a sudden the ignitor will glow, kick off with no gas coming threw valve. it sounds like the high limit thermostat is short cycling the flame. This is the thermostat that sits on top of the burner chamber. remove 1 screw from the thermostat and blend it upwards away from the heat. Then plug unit back in and test to see if the flame stays on longer. Click here to see maytag dryer no heat posts. Contact me anytime here. Hope this helps..
Hi there. You should inspect the fire tubes, it is a tunnel under the fry tank where the burner flames suppose to travel to heat up the oil. Your fire tubes may be clogged with soot or carbon that's why flames cannot go thru the fire tubes. Fire tubes must be free of soot or carbon deposits. Soot build up on fire tubes can be prevented by keeping the gas pressure at standard as much as possible, low gas pressure produce yellow flame or poor flame quality and in turn will produce soot. Also, make sure that no air or ventilation is directed towards the flue riser, otherwise, the same will result, flames rolling back towards the door. Regards.
A gas valve is actually 2 valves in one. The first is your pilot valve, when the pilot is lit, the flame heats a thermocouple or thermopile & that heat produces a millivolt signal that is sent to main gas valve( second part) & tells it that pilot is established and to open to allow main burners to light. The 3 "little flames" were coming from the orfices on the burner manifold. If you are absolutely sure you put the gas valve back in the same direction as it came out (arrow on bottom of valve pointing to the fryer/burners) & any springs or adjustment screws were not mucked with, then there is a malfunction in the gas valve. It needs to be replaced.
It can be both the heat fuse that gone or your pilot light has gone out, check to see if you see a flame while it
is functioning, to do this turn on your dryer and watch in the dark so
that you can actually see the flame coming on and off or check behind
the little door that houses the pilot light to see if you see a flame
if no flame relight, this should start your dryer producing heat again