Main burner will not light or goes out before grease reaches temperature.
The main burner on the fryer sometimes will not light, and sometimes when it does, it goes out before the grease gets up to the proper temperature. There is no problem with the pilot light. When the t-stat is turned up it makes a clicking sound as if it is working properly, but usually the main burner does not come on. Please advise.
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: Main burner will not light or goes out before grease...
Before replacing any parts,clean out the pilot,burner orfices and burners.if this doesnt solve your problem replace the thermopile.call 18884hobart and get the parts dept.tell them you need a thermopile for the model of your fryer.95% of the time the t-pile goes bad.theres also the hilimit in the unit that kills the gas if the fryer gets too hot but i dont think thats the problem.also check all wiring connections to the gas valve (clean and free of grease).drain the oil in the tank and youll see 2 bulbs ones the thermostat bulb the others the hilimit bulb.make sure their secured to the bracket.
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones). click here to download the app (for users in the US for now) and get all the help you need. Good luck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
sounds to me like your thermocouple is loose just go to where it connects to the gas valve and tighten it most times this happens after it has been replaced, because temperature changes loosen them also make sure the pilot flame is directly on the thermocouple , sometimes dust gets in to the pilot and changes direction of the flame making it "grade the thermocouple, with the main burner on the air flow sometimes "moves the flame and the thermocouple thinks it went out and shuts down the main burner. extinguish the pilot, either blow it out with canned air, or use a q tip to reach down and dust it out then re light. should be good
Check if your pilot flame sufficiently heats thermopile during operation and make sure also that it is free of soot or any form of dirt, thermopile generates small amount of electricity to energize pilot and main valve of the gas valve for pilot and main burner operation. This electricity passes through hi limit mechanical contacts. Hi limit on fryers act as safety device which will shut down pilot and burner flame when oil temperature reaches 450F. If your fryer is set at 350F and over shoots up to 450F (which will trip hi limit and shut down pilot and burner flame), the thermostat is not good, but, if hi limit trips on temperature much lower than 450F, hi limit is bad.
I assume it is a gas model. There are 2 thermostats. One is adjustable, you set your temp, it sounds like it has gone bad.. The second thermostat is the high limit thermostat. When it reaches 450 degrees F, it will shut down the pilot and main flame to prevent a grease fire. It may be possible that someone has hooked the thermostat up wrong. Next time you fire it up, disconnect one of the thermostat wires that has the temperature knob. If the flame goes out, the thermostat is bad,
Hi there, it sounds like your thermopile, for the pilot, is failing during use, when this happens, the small DC voltage it generates is less than the gas valve requires to stay open, and shuts off the pilot, which shuts off the main burners. Another thing that could be happening, is the hi limit is opening prematurely, instead of shutting of the pilot at 450 deg. it now is opening at 325, or 225 or 250. Sometimes the sensing bulb gets broken where it pass's through the oil tank causing this symptom. If you temporarily bypassed the hi limit to test this also, and it still goes off, you need a thermopile. If it stays on, check your temp with a reliable thermometer, and see if it reads fairly close to your setting, if so, then you need a hi limit. Hope that helps, and thank you.
Assuming that your make up air and exhaust hood are properly balanced, no negetive pressure conditions exist, your gas manifold pressure is at 4" wc, your air/gas mix on the burner set correctly, the your problem would be the pilot adjustment. If the flame is not intense enough flame to survive the sudden air shock, it will go out.
The pilot height should be about 1 1/2". Your Pilot orfice could also need cleaning. Eliminate excessive draft in your kitchen.
Here is the manual for your unit, it covers these topics.
It could be a faulty high limit, you can also check the high limit probe to insure it is mounted securely against the through tube wall in the grease. Also check the burner, there are baffles that run through it and when they get old the flames don'tmove though the burner correctly and will cause the high limit to trip prematurely