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    Mr Heater Big Maxx 3rd burner won't light

    Thanks D45 - I did try adjusting the pressure up and down but with no luck. Also, I should have mentioned that it's been converted to propane. Someone else on here had a similar issue with the 5th burner on a larger unit. His solution was to modify the 4th burner tube somehow...but I'm not...
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    Mr Heater Big Maxx 3rd burner won't light

    I have a new 50000 BTU Big Maxx installed in my shop. The igniter lights the 1st burner fine and the flame quickly spreads to the 2nd burner but won't spread to the 3rd and the flame sensor shuts it down. If I just blow on the 2nd burner the flame will jump up and the unit runs fine until it...
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