Imperial IFS50 the pilot is lit, but the burners will not ignite. why?

When the pilot goes out and won't stay lit is is usually because the Thermocouple safety device has failed.

The burners should never be on when the thermostat is off. That is incredibly dangerous. You need a gas registered service technician.

If it has a thermocouple you should check it next.

Number 5 is your thermopile/pilot generator. It is a pilot generator that does 2 things. It holds open the valve with a safety magnet and it operates the safety valve solenoid whenever the control stat calls for heat. Overtime they get weak and will hold the pilot but not operate the valve solenoid. I would replace that pilot generator.thermopile and party on!

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Have a lighter handy (I use one of the elongated ones for caravaners)
in-between the burners is a pilot light (top right) keep the lighter flame where the gas comes out.
On the right hand side of the fryer at the bottom is a gas valve with a little black knob.
Press and hold the black knob in and gas will come out of the pilot light and ignite by the lighter flame. You need to hold the button in for quite a while. (until it stays lit)
When it stays lit depress the little black knob and turn it anti clockwise. Gas comes out of the burners and ignites from the pilot light. When it reaches temp. it will cut out.
To turn it off turn the little black knob clockwise. To turn the pilot light off, push and turn clockwise.

Check the millivolt output of the pilot generator. Sounds like low millivolts. Replace the pilot generator and you should be good.


Tom

For sure if you got gas to the unit.The only thing to keep the pilot for working is hi limit,thermocouplen.One other thing is does this unit need power for it to work?

This problem could be caused by a few different things. You should check the condition of your pilot and the thermocouple, if the pilot is weak due to being dirty you will not generate the optimum Millivolts to run the fryer, you may need to dissassemble and clean the pilot. The thermocouple needs to be correctly placed in the pilot assembly, if it has dropped down to where it is not in the flame it will not work correctly. You may need a new thermopile as it may not be generating millivolts as needed. Gas pressure can cause this as well, if the pilot goes out then the main burners come on you should check the gas pressure. One more thing to check is the hi-limit thermostat, if this is cutting out early your pilot will go out. Imperial uses a self-resetting limit, after a few minutes your fryer will relight and work until if cuts out again. If your fryer pilot stay on with the thermostat off for long periods of time and does not go out immediately when the burners come on and the pilot is clean, you may need a hi limit. This is a lot of info, I hope it helps.

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

If your pilot lights up but the main burner doesn't light up then you have a bad pilot sensor or gas valve

The oven pilot will need to be lit, On the bottom there is the oven safety valve, it has a red button on it, you must depress the button and hold it with the pilot lit for 60 seconds, when you release the button the pilot should stay lit and the oven will be ready for operation using the thermostat (knob). Please note: if the oven has set unused for some time you may need to hold the red button for a long time to bleed the air out of the lines. The pilots for the top burners are actually right beside each burner. You may need to turn these pilots on, they are controlled by small valves (small brass screws on the gas manifold where the gas valves and knobs are located, look between the knobs). These small screws/valves will open the gas flow to the pilots when turned counter clockwise. If you open these valves and the pilots still do not work, they will need to be replaced. Hope this helps