Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

First floor zone calls for heat and boiler keeps turning on off

jogrady
jogrady Member Posts: 5
in Gas Heating
I have a slant fin boiler hot water baseboard the first floor zone calls for heat and the boiler short cycles .
I replaced the thermostat and also replaced the expansion tank which was filled with water. I also bled all three zones and air came out. I also have been having banging pipes. After the bleeding and installing new expansion tank banging stop for a day but then came back. Could the first floor zone valve e bad and be causing this problem.

Comments

  • DZoro
    DZoro Member Posts: 1,048
    Could be the zone valve stuck closed. Do all the Rads. in that zone come up to proper temperature?
  • HomerJSmith
    HomerJSmith Member Posts: 2,641
    You did open the boiler water feed valve, I hope. What does the temperature / pressure gauge say.
  • DZoro
    DZoro Member Posts: 1,048
    How many pumps? Power to them? Supply hot, return cold 5-6' away from the boiler?
  • John Mills_5
    John Mills_5 Member Posts: 952
    1 zone calling it is likely the boiler will short cycle. How fast is it cycling? Approximately what % of your radiation is this zone?

Categories