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I just put this heater back in service 1/17/19 with a new mat and having the flame ring welded all the way around. The heater had been out of...

Success, I put the heater back in a few minutes ago. The first attempt it didn't start up so I thought I still had a problem. Checked everything...

I haven't tested it yet but I think I found out what was wrong. I pulled the pump out of the constant level control valve and when I turned it...

Update , New burn ring installed 1/1 19 . It looks like there was some soot below the flame detector that fell off and was probably the cause of...

Thanks Tom. I've got both an extra pump and motherboard so I should be able to figure this out with a little work/time with no additional expense. ...

In my 15 years of fixing Monitor heaters I have never seen an out of spec pump on a 422 or 441. That being said, the pump could be bad. I have seen a...

The nozzle at the pot is clean. I removed the pot, cleaned it and put in a new burn mat last winter when the problem started. I've also taken the...

You do not need to remove the tank to get the pump out, however you will need a bent screw driver to get the two screws out. I don't think there is...

I've never had to do anything with the pump in mine. Can the pump be lifted out of the constant level controller with everything in place or does...

The only way to trouble shoot the pump is to use your flame sensor by pass and a calibrated cup. Check the fuel flow in all three modes. Low 5.1 cc...

I know this thread is about a year old but it's still related to the initial problem. The heater was running on high all the time and wasn't keeping...

New burner ring arrived today , will install in a day or two . Monitor has been running perfect since I posted 12/31/18 ,go figure .

My inclination from its behavior is the burner ring . I will try that first , plus look for soot bridge . Any info on how to test other sensors for...

We woke up one morning awhile back to flashing status bars. I loosened up the screws to the flame sensor, wiggled it around a little bit and ...

We woke up one morning awhile back to flashing status bars. I loosened up the screws to the flame sensor, wiggled it around a little bit and...

Any deformation of the burner ring is a reason to replace it. The flame sensor is what is shutting the stove down. It's not broken, it's doing it's...

Here's the exhaust

Can you take a close up picture of the tip of your exhaust pipe? Thanks, Tom

Thanks for all the tips. Strangely, the smell seems to have subsided since we've had milder weather. The smell was only present when firing up, and...

Does the fan spin free by hand?

also check the copper tube where it goes into the burner. I just had a 2200 where the tube was not tight or properly seated. It leaked between the...

Thanks. I got a burn ring from Hickory Home and Garden. I think thats the seller on ebay I got it from. Those burn rings are about $85 now. I got...

Check the connection from the heater to the flue pipe. This connection must be all the way together. It's a little hard to get all the way in.