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My Mr Heater Big Maxx garage heater suddenly stopped working, and when all is said and done the board blinks twice. According to the inside panel of code meanings, 2 blinks means "System lockout, failure to detect or sustain flame". Here is what happens. I turn the gas on going to the unit, I...

Santa Claus finally brought me a shop heater - 75k Big Maxx. :thumbup: I want to vent it horizontally through the wall, but on the other side of said wall is the deck to my house. The vent will be approximately 18" below the joists of the deck. I don't have any other venting options since the...