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Will this heat up at all. Is it the same Model # as the one you .have some changes from the one you have for 2 years ago might have been made. check model # and make sure it is the same The light that go's out might be when the unit come up to the setting you put you Thermostat on meaning it heated up and will come back on when the temp drops and it starts to heat back up. it's that simple. if you just got this unit it should work if you turn the heating setting up . Let me know if the unit heats that is the starting point.
Hi there. Hi limit may be tripping off due to high oil temperature (power supplying the gas valve is connected in series with the hi limit). Verify if the thermostat is not shorted, also please check the thermostat calibration if it is good.
Too much CO is a result of a rich burn mixture...
Check to make sure that all the burner shutters are wide open...
If they are all open then the gas pressure needs to be turned down at the gas valve...
The screw to set the pressure is under a cap screw on the gas valve...
open the top and then turn the inside screw up or CCW to turn the flame down...
Make sure gas valve is in the ON position after lighting the pilot. Try jumping the thermostat terminals together to see if burner comes on. Three things could cause this problem
1. bad operator on gas valve
3. thermostat not functioning
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