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MR. Heater Portable Buddy model MH9B

I have 2 Mr. Heater and both have the same symptom's.

The pilot will lite, and as soon as i switch to the low setting ( 5000 BTU setting) the flame shuts off. I have also try the same with the 9000 BTU setting with the results. Can you help?

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  • Cold Feet Jan 06, 2008

    Sounds like the same problem that I am having. Start with pilot and turn to high, stays on a few minutes and shuts off..

    Have had a couple of different fuel canisters as well as 20# full tank. Stil the same results..

  • Cold Feet Jan 06, 2008

    I have been to Mr Heater web site, no mention of generator...suggestions????

  • jbpb Feb 25, 2008

    stared the unit as per instructions and the unit will run for about 1 minute and the pilot slowly dims and goes out . i have tried other tanks to no avail

  • Anonymous Mar 18, 2014

    After heat burns a while it kicks itself off. It started doing it on high an now it does it on low setting but not as bad



2 Answers

I had this problem many times, blow out heather with compressed air really good.pilot hole too

Posted on Oct 05, 2008

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The mr heater series units have a millivolt generator connected to a very small sensitive electromagnet in the valve body. inside the generator is a small insulated wire connected to the very tip of the generator. that and the outside copper tube forms the j-k junction. at the other end, the part that goes into the valve is a silver button and a gland nut. this forms the other part of the electric circuit. the inside of the valve has a spring and an iron slug with a rubber pad. the slug gets sucked into the electromagnet when the magnet is operating and holds the pad off its seat allowing propane to go through the regulator and valve. change out your generator and I'm sure your problems will be solved. mr heater has a web site.

Posted on Nov 04, 2007


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