If the fire is going out and the pilot is going with it you may have a problem with the gas valve or it could be as simple as you may be getting too much air which causes too much extinction pop which will make pilot go out on occasion. You may need to adjust your primary air.
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Hi there. The thermostat will only shut down burner flame but not pilot flame. Try tightening all wiring connections. By using an ohm meter, check the continuity across the hi limit terminals when the pilot goes off, your hi limit may be tripping prematurely causing pilot flame to shut down. Regards.
Try to tighten wiring connections on gas valve, thermopile, hi limit and thermostat, if it does not correct the problem, try replacing the thermopile first then if the burner still do not fire up, replace the gas valve.
If the wires on hi limit were cut and shorted, it is possible that the hi limit is bad and needs to be replaced as soon as possible because it is the safety device of the fryer. Hi limit is designed to cut burner flame in case oil temp reached 450F to avoid further damage on life and property. Washers need to be tightened/ replaced to correct burner alignment. It is not safe to operate a fryer with misaligned burners.
Check the hi limit sensing bulb, it should not touch the fire tube, when it does, it will sense high temperature which will trip its mechanical contacts and will shut pilot and burner flames. Make also sure that the thermopile is free of soot or any form of dirt and is properly heated by the pilot flame.
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.
I am suposing that this fryer has worked good in this location before. If not, check to make sure it is set up right for your gas supply. (LP-Nat) There is something wrong with the gas - air flow in your unit. Look for obvious things first like exhaust being blocked, Flame dancing out side of fire area, Pilot too small, Build up of debris in fire box. The pilot should be able to be adjusted at the gas valve if it is too small. I believe you problem could be taken care of best with a good cleaning of the burner, fire box and pilot assemble. Make sure that all burner holes are clean especially around the pilot light. Check for oily debris inside the fire box to make sure its not leaking into the fire area. If you are unable to do this yourself, contact some one either in the restaurant equipment service business or heating and air conditioning business. Hope I have helped you.
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