1. braindrain22

    Navien NCB 240e Combi Intermittent Short Cycling

    Hi everyone, Aside from the internal circulating pump failing in September, the unit has been running without issue since its install 5 years ago. Everything was in order during my annual service 3 weeks ago by a Navien certified plumber. Starting 2 days ago, I noticed the thermostat calling...
  2. Joe Henderson

    Boiler short cycling

    Hi my boiler keeps short cycling .. I think it might be because my thermostat looses its temperature very fast.. if I have it set to say 68 And it’s 67 or 68 my boiler will turn on for a minute then turn off then the will go back on in about 3 min when the thermostat goes down by one ,, can I...
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