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Radiant heat system issue

esstee Member Posts: 1
The thermostat works to turn on the system when needed. It runs fine, the heater
works fine. The heater isn't being told to heat when its needed to heat. When I force the hot water heater to heat the system works perfectly to heat up and run. The issue is I can't be there to force the hot water heater on all the time. Any ideas? Thanks so much in advance


  • hot_rod
    hot_rod Member Posts: 19,846
    Snap a pic of your system and attach it
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • GroundUp
    GroundUp Member Posts: 1,649
    First you said it works, and then you said it doesn't work. Which is it?