My monitor heater 441 comes on but after 3 mins.or so the burner lights come on full then starts blinking still no flames no heat.

Here is some information and your Service Manual with a Troubleshooting section.

Monitor 422 Kerosene Heater

cleanflametrap.com http://cleanflametrap.com > bruce_monitor

Monitor 422 · The Monitor is a computerized kerosene heater. · Here's an odd accumulation at the burner base. · Here the top panel is ajar and the upper front ..
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Monitor 422 Service Manual - ManualsLib

ManualsLib https://www.manualslib.com > ... > 422

View and Download Monitor 422 service manual online. MONiTOR HEATING SYSTEMS. 422 heating system pdf manual download. Also for: 22, 21, 41, 441, 40.
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hears trouble shooting guide ---------------https://www.manualslib.com/manual/851964/Monitor-M441.html?page=26

moved category from Computer Monitors

Probably to soak up spills, or the igniter doesn't work as they are using lighted cloth.

https://www.hunker.com/13408499/monitor-heater-model-441-specifications

https://www.google.com/search?q=monitor+441

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look and see if the part that stubs out the wick upon turning it off is stuck up or not dis engaging properly. if stuck up the over heating would shut it down!.

This sounds like it is going to be a circuit board issue. When you turn it on the blower should start and the igniter will begin preheating the burner. After 3 minutes the burn lights should come on and you should begin to see some flame with a few seconds. The heater should burn on low for about 10 minutes to allow it to become evenly heated before going to high.

sounds like your heater may be starving for fuel. check all your rubber hoses for cracks first and then continue troubleshooting from there.

Remove the front panel and tape down the door safety switch so the unit can turn on when door is off. Turn up thermostat to make sure there is a call for heat. The circuit board should indicate a call for heat with either a blinking light or a solid light. Then the exhaust fan should turn on clearing the venting from any fumes. When the fan has ran for a few seconds, the igniter should start glowing orange. After it reaches a predetermined temperature, the gas valve should open with a click. The flame will start at the burner closest to the igniter and travel away from the igniter. There is a small flame rod located in the flame path on the last burner that tells the circuit board it feels the flame. If the flame goes off within a few seconds of starting, you have a dirty flame rod. Clean it with a scotch-brite pad. Once you get the flame to stay on for 90 seconds or so, the room air blower will turn on. If it tries 2 or 3 times to start but does not, the circuit board will record a code and display it with a blinking light. Look on the door panel for a wiring diagram. There will also be a Diagnostic chart that will tell you what the pattern of blinking lights represent.

Good Luck!

One blink does not tell you much, it tried 3 times to start and did not.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Lane,

Do you hear a thumping noise on the lower right side of the unit just before it starts flashing the light bars? If so you have a fuel supply problem. If there is no thumping noise I would check the flue pipe on the outside to be sure it is clear. Lastly I would remove the copper fuel pipe from the burner and try to start the stove. If fuel comes out the pipe the pump is good. If fuel comes out I would stick a paper clip down the fuel nozzle about 3 inches, it could be blocked with carbon. If no fuel comes out the pipe, you will need to get a manual or a tech to help you out. The choices would now be fuel pump or main board, both of which are pricey so you don't want to make a mistake.

That being said, when was the last time you had the burner serviced? Mat, ring and all the gaskets involved? A Monitor 441 needs to be looked at about every 3 years to be sure you get through the heating season.

Good luck,

Tom Hawkins
[email protected]

Sounds like you may have a weak or bad flame sensor. If the circuit board does not sense a good flame it will not light the burners. Also if your furnace is 5 yrs or newer it should give you a fault on circuit board in the form of a blinking or a code itself.