Mr. Heater Heating & Cooling - Recent Questions, Troubleshooting & Support

I had this same problem with my heater. I cleaned the propane tube where the flame comes out (after it’s off and cooled down) with a Qtip and some alcohol. After removing some cotton, it will fit all the way down to the end of the tube. Repeat until it comes out clean and stays lit. I had to repeat with 91% rubbing alcohol and more Qtips, and most of the cotton removed.

Check out the pressure switch . and the snap disk .

HI try mr heater wed site there has been some recalls on these heaters , it sounds like you had too much pressure going to the heater , or the gas valve was faulty, hope this helps

The new 20lb LPG cylinders now have what called an OPD Valve. Reconnect to a 20lb cylinder and turn the tank valve on very very slowly, This will help prevent the OPD Valve from locking up the heater's regulator. Your 1lb cylinder is not required to have this OPD Valve.

By the way, this happens quite frequently with LP Gas Portable Grills.

check the pressure switch and the snap disks

Tis atomizing the fuel so it'll burn hotter/better. up their loud tis normal.

Question edited for a lot more clarity.Question moved from Sewing Machines category!Does it have a tip switch or a fuel float level? Smokes because there is too much fuel, or is has flamed out and is just vaporizing the fuel.https://www.google.com/search?q=175%2C000+buddy+pro..

Model?

The capacitor in that unit is for starting the motor that drives the blower fan. It has no impact on the ignition of the gas burner. On the control board, there is a light that should be flashing, can you tell us how many times it is flashing?

You will probably need to remove the pilot orifice and clean it out use a small needle or orifice cleaning rod. The pilot flame is not big enough to keep the thermocouple engaged.

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.

Yes no flame to thermocouple it will shut off

With multimeter check l1 to ground on control board. Also check 24vac to ground to verify high and low voltage present at board.

3 amp is this not too small ??

chw=eck flame sinser need clean

Short question Short answer = replace thermostat

There is nothing on line about heat shields I would go direct to M r heater with model and serial number and ask them .

may be low fuel flow video below have some suggestions. https://www.youtube.com/watch?v=L5UNAvPWXNE https://www.youtube.com/watch?v=JU8dS8XNU7k https://www.youtube.com/watch?v=VLbA_DFlqoQ https://www.youtube.com/watch?v=s58YeeyD0zE https://www.youtube.com/watch?v=kdnOhjev3BU manual below troubleshooting starts page 13 https://www.mrheater.com/downloads/dl/file/id/275/mr_heater_20_30k_btu_propane_vent_free_manual_2016.pdf

Chances are the thermocouple needs replacing.