Why is my Dean fryer keeps going out then have to relight pilot

SOURCE: pilot light is lite.

This problem is caused by a faulty gas valve.


Thank you

SOURCE: Imperial fryer IFS-40

I had a very simular problem. My fryer would do exactly as you described, but sometimes the pilot light would stay on until the burners tried to re-ignite and then it would go out.
I finally had to call the gas company. They took the pilot light apart and cleaned it. The fryer works perfect now.
Hope this helps!
Ken

SOURCE: DEAN SR142GPS Flame Issue

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.

SOURCE: high limit kicks out fryer and pilot light can

Since you've mention the pilot light goes out at 400 degree F, then we are talking a gas Deep Fryer. The deepfryer usually use at 350 degree F for chips or else. Because the oil will start breaking down its quantity of frying very quickly over that temperature. Most people set at 350 degree F. Now we comes back to your problem, First you should have a deep fryer thermometer they espcially made for deep fryer, (You only mention 400 or better ) that make me think you're only guessing. Knowing the temperature is very important, most Hi limit is set at 420 degree F.
To me it seen the Hi Ltd control is working and that is why it cutting out the pilot when it reach its limit but we don't know what temperature that when the hi limit cutting out at.
When you have a thermometer, put it in the cold oil and turn the temperature to 100 degree F to see what the temperature control cutting out at. slowly increase your setting until it cutting out at 350 degree F . If you set at 250 degree F and the thermometer already reaching 350 degreen F then don't go any further , your temperature control is defective and need to be change a new one.
This is only the first step, you still have to check out the Hi ltd control to see how good its condition is,so far your information say it cutting out at 400 or better. But you've to be sure, because it is a safety control. Hope that will help you , God Bless.

SOURCE: I have a Pitco 35C+S

With the thermostat on the burners are still getting gas. that's normal. If it lights with the thermostat off you do have a severe problem. (bad gas valve/Tstat). The pilot does occasionaly go out on all no electronic ignition items is normal. Follow the remommended steps for relighting and if it lights fine your ok.