WiseGuy

check your circulator pump take it apart and clean it, might be clogged or about to go out, could be a loose wire also for the pump.

hey just joined this forum cuz i googled apollo hydroheat in search of a tankless hydro heat system to save even more money and cant find find anything for a apollo system. any clue if thats out there? I personally have worked on and replaced many apollo systems at my job doing maintenance at a 630 apt complex that all the apts run off of apollo heat and ac, so if any1 needs a question answered about em i have rebuilt em from the ground up