RED HOT FLUE EXHAUST

red hot exhausts indicate
ignition timing late
valve timing incorrect
red hot occurs when the exhaust valve opens and allows burning compression gasses into the exhaust system (500-600C) instead of the cooler burnt mixture
If you have an EGR system then that system is faulty and not bypassing exhaust into the inlet to cool the combustion temperature

Umm...NO! That is not normal. Discontinue use immediatley.

glowing exhausts indicate valve timing, ignition timing or lean fuel mixtures
AS you have altered the jets I would be looking at air/fuel mixture for the rear pot
It is probably the same for the front pot but with an air flow on the exhaust pipe you will not see it getting red

http://manuals.kdfsi.com/Imperial/fryer_diagrams.pdf

Hi Karen,

If my description of what your heater is doing please read through to the end.

The heater is turned on and a room temperature is selected.
You can hear the noise of a small fan start, which shortly after the heater starts.
After a short period of time the heater stops and the red led begins to flash and shuts itself down.

This type of heater has a balanced flue, which means it draws air in one pipe and exhausts it out another.
Have the balanced flue checked for blockages, the problem will most likely be in the flue pipe which draws the outside cool air into the heater and not the flue pipe which blows out the hot air.
it may be full of cob webs or something else which restricts the air flow to the heater.
A service person can perform a quick test to prove the above theory. At the rear of the heater there are two pipes, one is an insulated metal pipe and the other is plastic pipe.
Disconnect the plastic pipe from the flue box and restart the heater.
If the heater runs normally this will confirm that there is a blockage.

From the video it appears many things could be wrong. The baffles and burner tubes could be clogged, the burner itself can be clogged, the flue is blocked, or this unit is using the wrong type of gas, ie: propane on a natural gas fryer.
Recommended steps for troubleshooting.
1. Verify proper gas type. Natural or Propane.
2. Check Burners, tubes, and baffles, clean all soot and debris from them.
3. Check for and remove any obstructions from the flue.

I have a used fryer, imperial, looks like the ifs 40 but can not find the model number on it. Do you have any idea how I can find the model number?

Imperial Model: IFS-40.
The thermostat is either very far out of calibration or has failed, either case it should be relplaced. The Imperial Part # for the thermostat is 1175.

Google 3wire,they should have it.

Sounds like the pilot is dirty,if you have propane gas this is your issue,replace the pilot either way.