I have a mpi monitor 422 its trays to lite in then start to. Blinking what should I do

SOURCE: mpi monitor 422 heat problem

I had the same problem last night and this morning. Its in the manual. I had to take the fan off of the back and vaccuum out all of the dust/lint that built up and it was a lot. It is a safety feature. It's a overheating protection feature that usually triggers if there is build up in the fan, front vent or vent pipe to the outside. I hope this helps.

SOURCE: MPI Monitor 422 Does it

The Monitor 422 has a strainer in the fuel sump. Before you try to take it out, shut off the fuel at the oil barrel and have some old rags to catch some kerosene that will come out. I use a piece of plastic to direct it into a small bowl. If you stand in front of the heater, look on the right side at the bottom. You will see a small plate with 2 screws holding it to the fuel sump. Remove those 2 screws and the plate. The strainer will be in there. You can clean it with some fresh kerosene or I use a can of carbeurator cleaner. You should also have a filter in the fuel line outside close to the oil barrel. If you don't you should get one installed. It blocks any water in the barrel from getting to the heater which will cause your igniter to burn out.