Sounds like when you blew heater out with air compressor you moved brick so flame isn't hitting bottom of brick like they should. You should try and put brick back on top of flame so that you don't get to much heat on the refractory of the heater.The refractory will take the heat for awhile then refractory will start to break down. Then you will either have to install new refractory or replace heater
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i have a glo warm natiural gas wall mont heater with to bricks flameing blue and above the top of the bricks others glo orange
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