Question about Procom MN300TBA Heater

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We have three individual heaters out of 14 in our apt complex. Purchased June 2009. The pilot light is shorter than usual and when & if the bar flame comes on it is very low flame. Even when it is on #5 or #6...it is still very low flame and minutes later heating unit shuts off. The apts are all in a row. Apts effected is #1, #6 #11. Heaters before/after and around those 3 apts...aren't having any problems.

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SOURCE: Rinnai 556

Tomeboy,

You are asking a lot for a R553 to heat 700 sq ft. with bedrooms that have doors. These heaters are great but they do have some limitations. If you were building new you could put in quiet room to room fans up high on the wall to move the air into other spaces. Since everything is already built you are really stuck. If you had to you could frame in the fans, do all the electrical, sheet rock and paint or just put a smaller Rinnai in the bedroom. 6 of one, half a dozen of the other.Sorry

Posted on Jan 07, 2009

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SOURCE: We have 14 ProCom heaters,

the pilots should be clean ,they should be playing on the thermocouple if this is so then it could be new thermocouples if it was a pressure problem nothing would work , as it 1 , 6, 9 ,11, it could just be dirty pilots hope this helps

Posted on Jan 03, 2011

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We have 14 ProCom heaters, second cold season...we are having trouble keeping some of the pilot light lit and shutting off after several seconds. The gas pressure in the building is 7.5 lbs and the...


the pilots should be clean ,they should be playing on the thermocouple if this is so then it could be new thermocouples if it was a pressure problem nothing would work , as it 1 , 6, 9 ,11, it could just be dirty pilots hope this helps

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