Question about Mr. Heater MH35FA Utility

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Hi, I have a Mr. Heater 35FA and the pilot will not stay on. I have already sanded down the electrical connections as that has worked in the past but no luck this time

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Make sure the copper tube coming to the pilot is NOT touching any metal,if it is that will cause the pilot not to stay light

Posted on Jan 22, 2014

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Posted on Jan 02, 2017

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wilsodfarm
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SOURCE: pilot will not stay on

replace your regulater,which almost cost as much a a new heater.I have own 4 or 5 and finally got a good one,I have in the past cleaned out the regulator that was plugged with oil from the propane,they put oil in the propane for leak detection,I hope this helps you

Posted on Dec 02, 2009

Testimonial: "Thank You. perhaps it is not adjusted properly. I so appreciate the quick response..Good Job!!!"

  • 1214 Answers

SOURCE: Is it o k to bend the thermocouple tip. The only

Bending it will ruin it. You need to find out why the pilot flame is not as strong as it should be.

It is usually caused by bugs or spiders having gotten into the small air mix jet of the pilot assembly and died or built a web or, there is some dirt from the fuel that is partially clogging the fuel tube leading up to the pilot assembly, or plugging the orifice.

Posted on Dec 14, 2009

Testimonial: "worked perfectly"

  • 4736 Answers

SOURCE: I have a Mr Heater

Those air inlet holes on the pilot is the Oxygen Depletion Sensor or ODS. If it's clogged, it won't allow the heater or the pilot to light. As far as the flaming droplets and the oily film are concerned, it sounds like a case of incomplete combustion, due to a dirty burner. Which doesn't allow the heater to burner cleanly and safely. Also, depending on whether you're using insert-able canisters of gas. They may be old cylinders and the gas is contaminated.

To help you to further troubleshoot the problem, I have included a link to your Owners Manual that you can download and print for future reference. Pay particular attention to page 6.

http://www.mrheater.com/upload/newsletter/MH9BX_2009_US.pdf

Hope this helps you solve the problem. Please let me know. Thanks.

Posted on May 02, 2011

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1 Answer

Pilot will not stay lit on my mr. heater buddy. where do i get a thermocouple for this buddy model no. MH9BX


First follow this trouble shooting guide to make sure you need one-http://www.mrheater.com/product/faqs/little-buddy-troubleshooting/ Then Amazon http://www.amazon.com/Mr-Heater-Pilot-Assembly-Portable/dp/B008DBRB8W Make sure it's the right one for your model heater.0810snp

Feb 24, 2015 | Mr Heater Base Camp Portable Buddy Propane...

1 Answer

My mr heater wont stay light unless its above 3. It only stays on about 5 min then pilot goes out. It is gas heater. What's wrong with my heater?


Theres a thermostat inside, if its too cold and not warming up the thermostat enough it will shut off because it thinks there is a problem.

Feb 07, 2013 | Heating & Cooling

1 Answer

When I press down and turn the know the pilot lights but as soon as you let up on the knob to turn it there is a click and the pilot light goes out.. This is on my Mr. Heater Big Buddy


When the pilot lights continue holding the button down for a full minute and then release. It should stay lit then to allow you to turn it to the on position. If the pilot will not stay lit after holding it for the full minute, then the thermocouple will need to be replaced.
Hope this helps.

Sep 16, 2011 | Mr. Heater Big Buddy Heater

1 Answer

My heater stays lit for a few minutes then goes out. Also it has a high pitch whistle when on low.


Here is some research I did on Mr. Heaters--
your Mr. Heater the model that uses two small one pound cylinders or you have the choice to hook it up to a single larger tank? if so, you must use the special filter connected to the Mr. Heater and then your hose to tank.
This happened to me and after I hooked up the filter my problem was fixed.
Ron
large and sealed of an area are you using it in? I ask because those units have a low oxygen sensor which will shut it down if there is not enough oxygen in the space.(kinda prevents that pesky suffocation thing). Otherwise if using it in larger cold spaces, the issue is can be from the smaller tanks. As mentioned above, a larger tank can solve this, because these units have a fairly good input rate, which will cause the smaller tanks to freeze, and lower the propane temperature and evaporation rate, basically runs out of gas until the tank warms back up.
just one new cylinder, it will run on just one, to verify a problem with the cylinders. Also it could be the pilot light, sit and watch the pilot light to see if it goes out for some reason. If it does the heater will shutdown automatically, but you already know that.

Let me know if we can help you further

Mack B

Jan 17, 2011 | Mr. Heater (F274825)

1 Answer

Pilot will not stay on


replace your regulater,which almost cost as much a a new heater.I have own 4 or 5 and finally got a good one,I have in the past cleaned out the regulator that was plugged with oil from the propane,they put oil in the propane for leak detection,I hope this helps you

Dec 02, 2009 | Mr. Heater (F274825)

5 Answers

Stays lit for 25 minutes and shuts off


How large and sealed of an area are you using it in? I ask because those units have a low oxygen sensor which will shut it down if there is not enough oxygen in the space.(kinda prevents that pesky suffocation thing). Otherwise if using it in larger cold spaces, the issue is can be from the smaller tanks. As mentioned above, a larger tank can solve this, because these units have a fairly good input rate, which will cause the smaller tanks to freeze, and lower the propane temperature and evaporation rate, basically runs out of gas until the tank warms back up.

Jan 19, 2009 | Mr. Heater (F274825)

1 Answer

Can't turn gas **** past pilot


Unfortunately, Mr. Heater does a very poor job of writing user manuals, I didn’t even know my unit had a quick connect until I saw it on the side of the box. As it turns out, the spring loaded fuel **** has three positions; full up for safety lock, fully depressed to select/ignite the pilot, and half depressed to select the heat levels. I guess it was just dumb luck that I managed to get it to work the first time since there is nothing in the manual about this. Since I discovered the third position (sheerly by accident) I have not had any more problems.

Dec 22, 2008 | Mr. Heater Mr Heater Portable Buddy...

1 Answer

Pilot light on pool heater


One possible problem to that is a bad pilot generator, not a real common problem but often happens. To test the pilot generator, unhook the to wires that comes from the pilot assembly and hook to the gas valve. Wedge a screwdriver or something in the knob that you push down when regularly lighting the pilot so that gas will continue to flow to the pilot, if you dont hold it down it wont stay lit. Use a multimeter set on DC voltage and put prongs on the ends of the wires. If it is above 600 then it is good, a little bit below will still allow it to work, the pilot only needs like 100 millivolts to stay lit. If it is somewhere down around 500 or lower, then it should be replaced. Another cause, if the pilot generator is not bad, is that a switch in the circuit could be acting up and drawing all of the millivolts from the source before it gets back to the gas valve, in turn the pilot is not supplied with proper millivoltage to stay lit. This usually is the case if you use your heater and it works for a while but then shuts off, and the pilot goes off with it. You can test each switch without removing wires. Each switch should use 5-10 millivolts max. Put one prong on a ground, or just stick it in the ground, the guys i work with dont believe me that it works. And test one side of the switch with the other prong and then the other side to measure the millivolt drop across the switch. If all switches are good. Bad news, probably a gas valve issue. Although take the time to inspect the connections made at the gas valve and all other switches for that matter. A little rust, a little corrosion, can eat up millivoltage very quickly and this can be fix by using some sand paper or emory cloth to clean the terminals. Also check for loose connections, if you can wiggle the wire where it is connecting to the terminal, take it off and crimp it down a little tighter with some channel locks or something. Millivolt heaters are a pain in the but, that is why everybody makes and sells electronic ignition ones now.

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1 Answer

Mr. Heater Buddy Portable Problems...


ok, your unit must be propane. look on the back where the propane line feeds the nozzle. there should be a very small copper line with two spade connectors on it. this is your millivolt generator line. with a flame at the nozzle the generator makes a very small electrical current which feeds to the main valve and keeps it open. take a piece of wire and jumper these two spade connections together and try lighting the unit again. if it stays on, the hi limit is shot. you can get by with the connections jumped out, you just don't have the safety margin if it were connected. IF with the spade connections jumped out the unit still shuts off, the generator tube needs to be changed.

Dec 25, 2007 | Mr. Heater Mr Heater Portable Buddy...

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