Monitor 441 Heater

[hawkins111]

M441 high flame

Floyd,

HayZee is on the right track. You don’t have a circuit board problem. The circuit board is about the last thing that goes wrong on a Monitor. In addition to looking at the damper you need to overhaul the burner. The air holes are probably covered with soot and carbon. This, in addition to the damper being out of spec will cause a high flame. A new mat and burner ring as well as a good cleaning of the heat exchanger is what needs to happen. You will need to have gaskets for the igniter, igniter cover, top of the burner, flame sensor and window cover. The elbow on the back of the heat exchanger should be taken off so you can clean the exchanger completely. Since you are going to have to mess with the damper you might as well do the blower motor bearings at the same time. BTY, the chamber and blower on a M41 are the only two things that will work on your M441. If the chamber is no good I would pass it by.

Stay warm,
Tom

[floyd r]

i have a gut feeling it's on the board..it will vary speed no problem but i think it closes the damper on lo and med..i found a guy local to me selling a model 40 that has everything good but the chamber..might pick that up and try the parts change routine..i believe they are basicly the same unit..cant wait til spring

[HayZee518]

inside of the blower shroud is a solenoid operated damper. there is a plastic flapper with an O ring on it. the O ring may have broken off and wedged itself so the blower doesn't throttle down. does yours have sleeve bearings? an oil like 3 - in -one oil would work best. never use wd-40.

[floyd r]

did a little snooping this am on it..i believe i have a board or sensor problem as it kills the inlet air to to the chamber when iit tries to cycle down to a lower burner setting....havent checked any voltages or taken cover off on the back ...tooo cold

[floyd r]

no obstructions, and the inlet blower keeps running .when i first got it they were stuck...the inlet blower bearings...i freed them up an it ran fine last year...might be time for a tune up....but it acts like it's getting too much fuel and no air as it doesnt have the clean burn like it used to on med and low ..i dont want to pull it apart right now as it's the only heat source and it's 9 degrees..it runs great at full song just goes thru some kero

[HayZee518]

does the combustion blower make like a whirring noise, sort of like a jet engine? if so, bearings on the blower are going. check your inlet/outlet through the wall pipe for an obstruction. the inlet pipe may have an ice build up inside which is restricting the air flow.

[floyd r]

441 problem

just a quick question , i have a 441..runs fine on hi but on med or low i get a yellow flame and it soon obscures siteglass with black sooty powder..any ideas on this ???it runs fine on high but i'm going thru fuel like crazy at this rate...thank you, floyd

[frankyjbostic]

change or at least lubricate the bearings on the combustion blower. they are 608Z with an 8mm bore. there are spacers in the blower so make sure you put these in. the nut that holds the vacuum plate is left handed thread.

Hayzee I just wanted to thank you for your help. Last year when my heater stopped working we also had the only 4x4 in our home give out. Our family was cold and tired of walking up and down the the snowy hill. By the time I got everything back online I just never took the time to say thanks.

[chugachik]

Thank you, adnadeau!

[adnadeau]

Repair Manual Link

The 441/422 repair manual is still at the link Megrine set up earlier this year.
Put megrine.megaupload.com/?d=1B4P8VB4 in your browser address bar and replace megrine with www. It's aboout 20 MB. You have to wait about 30 secs before you can hit the Normal Download button. Look out for the porn ads.

[chugachik]

Can anyone send me the PDF for a 41 or a 441. Pop just put a new burner thing in the firepot. Now the stove won't power ON. We've been repairing this stove on a wing & a prayer for 20 years so far without much trouble. It's a Model 41. The dealer in town desperately wants to sell us a new stove. We can't afford it. If anyone has the PDF for the 41 or the 441, will you please send it to grewingk@gmail.com ? We're in Alaska. It isn't cold yet, but it will be soon, and we don't have a woodstove in here.

[HayZee518]

the reset button in the CLC [constant level control] is either a toggle over center mechanical lockout or a release for a magnet that keeps the needle valve closed when the float gets too high. it isn't a prime button that so many refer to.

[bobburney]

Put a new burner in my 441 today and it worked then quit. Turns out there is a lever in the float bowl ( maybe for earthquakes) that cuts off the fuel. Hope this helps someone.

[HayZee518]

when I first set up this forum on monitor heaters, little did I know that it would take off like it did. I had an M-41 in my house and after paying $146.00 for a new combustion blower I figured there had to be a better way of maintaining the heater. After all, it is the main heater for my house in Northern NY. The monitor had a very good track record for reliability. The heater has parts made in Japan. I figured there had to be materials available here in the "states." McMaster-Carr and MSC Industrial were my choices for parts. I broke the viewing window on mine and needed a replacement. I found some boro-silicate glass in McMaster-Carr. A replacement from Monitor would be $45 for a chunk 1 1/2 inches square. The boro-silicate was 6 bucks. Peelable re-inforced high temp gasket material from McMaster was $19 for a piece 1 foot wide by 4 ft long. Burner mat material - ceramic fiber .019 thick with an acryllic coating, 1 foot wide by three feet long - another 20 bucks. a burner mat from Monitor was $55. Go figure.

[Buscobandit]

Very Usefull Information

I just felt compelled to log into this site and express my thanks to Hay Zee and others on here for all the helpfull info on getting these 2 Monitor 441's up and running. Thank you all, Delton