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Pilot lights perfectly, but when I turn the thermostat to light the burner the pilot goes out. Sometimes the burner will light for 10 - 15 seconds and then go out. Thanks
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You may have moved the safety sensor or pilot flame tip. The pilot light heats a wire. The wire is the safety sensor. The wire has to be clean and in the pilot flame near the flame tip.
For (fire) safety, there is usually a thermostat that will turn off the gas if pilot light goes out.
So when you try to light the pilot you will have keep press & hold the pilot gas supply for at least 10 sec until the thermostat is heated up. Then only when the pilot light stays on continually, can you turn on the burner.
Forget about changing to a High pressure regulator!
If it's a direct spark ignition type heater maybe that's how it's designed to.work .When called for heat pilot open allowing gas then ignitor spark and ignite the pilot then gas valve open and allow gas through burner then unit fires off . Once temp is met pilot valve closes and pilot out .
Sometimes certain models turn off if you touch the thermostat before it lites... We've seen this happen many times, so you would need to light the fryer first, wait until it's stable before turning your thermostat to desired temperature.
Sounds like the igniter needs to be replaced. It is normal for a heater to run five or so minutes that means the thermostat is working. then restart when the temp calls for heat but if the igniter does not work it will not light up again.
The Tstat has a capillary that looks like a thermocouple but it isn't, its a bulb with liquid that expands and contracts based on temperature. A pilot can go out due to a high limit switch being week or getting to hot and that can be shaped like a thermostat capillary or can be simply a disc with a button if even there is a high limit on your stove. There likely isnt. So see the next suggestion.
I suggest lighting the pilot, turning on the main burners while watching the pilot. If the pilot shrinks in size, then check your gas pressures before and after turning it on and seeing if there is a wide variation. I would suggest the pilot is dirty or the pressure regulator is faulty.
First, never light when the pot is empty, you can fill with water if you have no oil. Open the door, check the thermostat and make sure it is turned off.(The burners will light if thermostat is on) Behind the thermostat you will see the gas valve. Turn knob to off, then to pilot. There is a notch at the pilot position. Now look up in the middle behind the burners and you will see the pilot assembly. Push in on the knob on the gas valve while you hold a long lighter close to the pilot assembly. Once the pilot lights keep holding the pilot knob in for 20 seconds. Now let off the pilot knob. Pilot should stay burning. Now turn the gas valve from pilot to on. Now turn the thermostat to desired temp and the burners will fire off and start heating.
This is caused by the safty bypass feature on the gas valve. You will need to replace the gas valve. This problem is a safty interlock built into the valve when it fails it will not let the main valve portion fire.
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