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

Posted by Greg Johnson on

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Anonymous

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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.

Posted on Jan 06, 2009

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Anonymous

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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.

Posted on Nov 11, 2010

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Count the number of light flashes. This is a trouble code. There should be a troubleshooting guide that came with the heater which should tell you what the problem is.

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MPI Monitor 422 Does it have a filter? If yes, where is it located?


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.

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I have a Monitor 30, it comes on and just runs, it will not lite until I lift the primer once or twice, then it heats fine. I checked the filter and made sure the tank was high enough for a 5 gallon...


Rob,

You have some kind of fuel problem. When you mention 5 gals of fuel, that leads me to think you need more fuel ( more pressure). If you have a large tank and only have 5 gals you may no have enough head pressure to push the fuel through the line and all the filters in the system. That being said the Monitor 30 is the oldest vented heater around. Parts have not been available for 15 years. The thing that scares me about the M30 is the flame safety circuit. I don't think it is adequate. If you rely on this heater to keep pipes thawed I would get a new Monitor or Toyo.

Tom Hawkins
[email protected]

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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.

Dec 26, 2008 | Rinnai Toyostove Direct Vent Heater: Laser...

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