bixby maxfire 115 convection blower stops

I'm new to this club but I have a question about my bixby maxfire pellet stove. while I'm running my stove don't matter what heat level or how long its been running the convection blower stops all of the sudden and the stove continues to run till it either gets really hot or overheats and the snap switch starts the shutdown. the blower will start back up and cool it before it shuts down or the stove will Start shutting down and the blower will just pop back on and run as it's shutting down. sometimes I can run it for a week or 2 with it not happening but then all of the sudden it will happen. very random. any info would be greatly appreciated .

 

These people will tell you what's wrong with it! Good luck!

 

Yep, what he said. Sounds like thermal protection shutdown. How old is the motor? Ever been cleaned & oiled as JT mentioned?

 

Oh, and welcome to the madness (forum) soupcan

 

I believe his blower is a EBM PAPST,and the bearings are difficult to get to.Probably should check the terminal where the blower pugs into the control board.And check for voltage to the motor,when it is acting up.Also,those motors have a run capacitor,that can do strange things when going bad. Bixby Stove Parts

 

ok the blower is original and I did just change out the bearings 3 weeks ago because like you said I thought maybe it was getting hot. now the weird thing is the stove can be on heat setting 2 or 8 makes no difference on it stopping seen it stop on both settings. and the other thing is when it happends the stove gets super hot due to no cooling and it sometimes will kick back on while the stove is like lava or right after the snap switch has put it in shutdown mode or if I knoticed it by the hot metal smell and shut it down manually it kicks on emidiatly after I hit the off button this has me stumped.

 

When the fan shuts down you need to verify if voltage is still being fed to the convec blower and if so how much? Looking at the manual it looks like there's an inline AC cap....if that is starting to flake out it could be your problem.

 

Two things pop into my head did it do this before you put new bearings in it and how long has it been since the control board was updated? If you have a cable and Bixchek you could monitor it and probably see what is going on.

 

ok it just started doing it out of the blue for no reason. last weekend I replaced the bearings in the blower again with skf sealed and shielded bearing the best I could find. it ran perfect without a problem all week. this morning I cleaned it out vac inside the burn pot under the plates and brushed the heat exchangers. within 1 hour of running the blower stops again I put a box fan behind the stove where the fresh air intake is and within 5 seconds the blower came back on right before it was going to shut down from overheating. now it won't stay running unless the fan is being the stove. as long as the fan is blowing being it it stays running. if I pull it away for 10 min it stops again.

 

Suggest find bixcek,like Rona says.Might want to find out who used to be a dealer near you,they may still have the programming and cable,and sell them to you.I have heard of(rarely) the speed sensor in the EBM/papst motors,causing intermittent problems.

 

our dealer went out 9 years ago unfortunately and I am available to absolutely no part. I've heard of the cable and disk you speak of but don't know how to obtain them. from what I'm reading my stove has a 9000 plus serial # there for it has a more recent programming. for example most bixby maxfire stoves won't do a ash dump if there is an igniter out and a code set this stove will. so I'm sure there is newer programming out there for it but at least it's not totally in the dark ages lol. if I keep a small fan in the rear it seems to not shut off but hate to know something is not right and don't trust it on at night or when I leave. sucks! but thank you for your help and advice hopefully I can get this figured out and find the part needed.

 

Does this stove use an exhaust temp. probe, aka: thermo probe? Only ask because the stove here does, is associated with / located by the combustion blower, and will cause combustion motor speed variations if not clean / has buildup on it ..

Would suggest also inspecting -> cleaning the exhaust temp. thermo probe & checking it's associated connections, if not done recently.