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Our Monitor MPI 41 model heater won't stay on. It flashes 88:88 in the time/temp window and the Burner status flashes high. When we shut it off (power down) and power it back on it works until it reaches temp, then it stops working and flashes the 88:88 code and 'high' burner status. Can you please tell me what is causing this error and how to reset it? Also, do you know how to get access on-line to a technical manual for the model 41? thanks

Posted by Anonymous on

  • Brian Niten Dec 31, 2010

    Let me ask a couple of questions to get a better idea of what your heater is doing. Does the fuel pump start making a loud thumping or ticking noise before the heater cuts off? If it does, the fuel pump isn't picking up anu fuel. Watch the room and set temperatures. Does the room temperature get 4 F above the set temp before it cuts off? That is how the heater should work. Have you checked the fan cage behind the heater? If it is clogged with dust and lint, the heater may be overheating from lack of airflow across the heat exchanger. I think they have owner's manuals at www.monitorproducts.com. You need a password to get access to the service manuals.

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Mine is getting fuel, but it still clicks off like the original post stated, and its clean. The only other thing .. that water in the tubing. We get a TON of watered fuel here in Alaska! Damn oil venders.

Posted on Nov 01, 2015

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Posted on Jan 02, 2017

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SOURCE: BURNER STATUS LIGHTS START FLASHING, SHUTS DOWN!

Not sure exactly what is meant by half way it shuts off. My furnance wouldn't heat to 68 degrees from a setting of 63 degrees on the setback thermostat without shutting down several times with a single flashing led. It would reset after an hour or so until it finally reached the 68 degrees. The problem turned out to be the tube that drains the water from the blower assembly. It had a belly in the middle which would cause the water to sit and block the airflow sensor for the gas value. Lifted tube to allow proper drainage to correct.

Posted on Dec 24, 2008

  • 1 Answer

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

  • 17 Answers

SOURCE: the heater starts to reach

Fuel Fuel Fuel It clicks because the pump is dry

Posted on Nov 17, 2010

bbtoast
  • 319 Answers

SOURCE: shuts off after slowe burning ,8888 flashes, and all burner lights fash. Monitor 441 oil heater.

Have you looked at, and or followed the troubleshooting suggestions at this website?

There is a full troubleshooting guide for your model. Let me know if you have checked this site out, then give me more details as to any other indications.

How old is this unit, how long has it been plugged in to the current electric outlet, etc.

Thanks

Brian

Posted on Jan 19, 2008

tborn6
  • 700 Answers

SOURCE: fan cycles on and off to often the burner stays on and the fan cy

what is happening is that the heat exchanger has to get to a certain temperature before the fan comes on that way you have warm air blowing out of the grilles and when the heat excahnger gets cool it shuts off until it warms back up again.

Posted on Jan 25, 2009

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