I have a Dayton 110,000 BTU need back plate

Could be the Flame out sensor cutting the power to the electrics and therefore the forced air fan. It forces the heater to shut off should the flame extinguish. It might also be the temperature limit control which also turns the heater off if the internal temperature rises to an unsafe level. If either of these two possibilities the unit may need a service.

Yes there is a filter. Pull up on the fuel line, or the rubber grommet that goes into the tank with the fuel line through it. There were different types of filter used. One is inside a black plastic tube. You can pick it out of the tube with a pick. Another style is located on top of the tank and is of white plastic. Your fuel delivery problem may be air related. The air pump is on the back of the blower motor, and meters a set volume of air to **** the fuel out of the tank and blow it through the nozzle. This air pressure is stated on the data plate on your heater, probably about 3.6 psi. The air filters on the air pump could also be dirty causing the air output to be reduced, and thus low fuel flow. Also check for air leaks at the pump. Spray soapy water on the black plastic cover and look for bubbles, which are of coarse air leaks.

http://www.bealsmotor.com/

This web site has been a great help for all my Dayton heater parts. They have all the parts straight from the owners manual with prices. It shows the picture of all the parts just like the owners manual and how they all go together. Good Luck!

Time for a Full tune-up, plug--fuel filter- 2-air filters -vanes in the pump.

Plugged nozzle, debris in air screen, oil filter needs changing.Time for a tune-up

take off rear plastic filter end cover. check very close for hair line cracks and make sure that plastic rib that seats around cork portion of gasket is not warped

REPLACE THERMASTAT

see if there is a pressues switch on the heater one of the tubes could be blocked,

We have a 3VE53C 400,000 btu heater , the fans will come on you can hear the ignitor and fuel will run out of the front of the unit. It trys to fire twice and will not. Then you get the E1 error sign.

replace the nozzle and check the fuel filter - if this is a kerosene heater. under the access plate is a round filter - remove it completely or change it.