Questions & Answers for: Mr. Heater blows gas

I have the Mr. Heater Big Buddy and it has been giving me trouble lately. After two years of flawless operation, the unit constantly shuts down, after only a few minutes of operation. I use a 20lb ...

thought I had a bad thermocoupler, but that didn't do the trick. the symptom is that the gas is only partly flowing after the burner is warmed. the high setting is putting out as much heat as it ...

spider web blockage or rust. Not a big job, just start from the full tank and test the hose to see if gas blows through it. Then go to the next component, check on down the path. You'll find something

I have the MHU45NG. About 2-3 years old. Will not ignite. Board is flashing green coorectly. After the 3rd try it kicks off like manual says. Gas supply and thermostat are good. Hoping for possible ...

...blows owtward but gas is still there then the flame will somtimes follow back down sometimes it causes the heater to shut off Make sure that the line is for gas and not propane that could be the ...

One side glows like a champ. The other side, dedicated for High setting, pooffs when I turn it to high, then kind of fickers and barely glows. I have a fuel filter and a six foot hose off of a 20# ...

panel won't hold a flame this could have to do with the main gas feeds to the ceramic panels . they might be obstructed with a spider web or dirt,foriegn material etc. easiest fix is to take a air ...

3 amp fuse keeps blowing as soon as power is turned on fuse blows. this is a brand new unit and has run for a month with no problems 3 amp is this not too small ??

...blows much heat ? sounds like its not getting gas fast enough to keep burning,that happen to me and the gas line was to long of a run for enough gas keep coming. so I up the pipe runs real good the ...

...3 amp fuse blow at startup? replaced fuse, turned on fan, it works, set thermostat to heat and fuse blows.again and again Short circuited component/s at its internal circuit ...