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Maybe I need a new thermostat?

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Cyclist77
Cyclist77 Member Posts: 226
in Thermostats and Controls

Every so often this thermostat fails to call for heat. I will turn it all the way up and nothing. No click ,nothing. I will pull the cover and put it back together and Bingo!

Is it a quality issue?

1000003808.jpg

Comments

  • BDR529
    BDR529 Member Posts: 364

    Yup, That type of t-stat has always been tempermental.

  • Cyclist77
    Cyclist77 Member Posts: 226

    Recommendation for a simple one?

    Thanks!

  • DanielDAY
    DanielDAY Member Posts: 25

    Honeywell T4 is a good simple digital thermostat for boilers. Highly recommend them. Just make sure to set the boiler to cycle once per hour for steam if that’s what you have

  • pecmsg
    pecmsg Member Posts: 6,673

    Why 2 thermostats?

    mattmia2
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 19,172

    I had one of those digital Honeywell round stats in my house. It worked well for a while, and it went fluky. Got rid of it for a Robert Shaw.

  • Cyclist77
    Cyclist77 Member Posts: 226

    The other thermostat is for the Forced Air furnace.

  • hot_rod
    hot_rod Member Posts: 26,254

    Is that round Honeywell a mercury bulb type? If so is the anticipator inside adjusted?

    Those old mercury bulb stats were pretty troublefree.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    mattmia2rick in AlaskaIntplm.
  • Cyclist77
    Cyclist77 Member Posts: 226

    No It is a "modern " thermostat. I do have a mercury type I the bedroom but the color is bronze!

  • hot_rod
    hot_rod Member Posts: 26,254

    Sounds like a loose wire or printed circuit connection on your HW. If tampering with it allows it to work, something is loose?

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • pecmsg
    pecmsg Member Posts: 6,673

    so

    Forced air and hydronics?

  • RascalOrnery
    RascalOrnery Member Posts: 116

    Had one of those white round ones at our apartment, once the set point was met it went into some kind of short cycle prevention delay mode, so even if you turned it up again it wouldn't run for a given amount of time. Ticked me off. I stash the mercury ones. They do what you say. No schedules, batteries, Pentagon level passwords and secret codes. I'm old fashioned I know. Setting the anticipator works for me.

  • rick in Alaska
    rick in Alaska Member Posts: 1,505

    I have not had good luck with that digital stat. I've had them that would not work right out of the box, So, I would get a different one to put in.

    Rick

    EBEBRATT-Ed
  • Cyclist77
    Cyclist77 Member Posts: 226

    So I think I found a solution. Last year I bought and installed a Tekmar thermostat and floor sensor. I did it jut to monitor the floor temperature. I think that now that I have a good idea of what floor temp I want I will switch over to it. Right now it is currently installed in the basement by the switching Relay. I did that for convenience.

    And yep we have 2 systems! I like redundancy!

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 19,172

    Like I posted above I agree with @rick in Alaska . I had one in my house it was fine at first. It did delay a bit then it got flakey and couldn't make it work so I tossed it. Got to be so it wasn't reliable and I was selling the place so it wasn't occupied and couldn't trust the stat

  • pecmsg
    pecmsg Member Posts: 6,673
    https://forum.heatinghelp.com/discussion/comment/1874401#Comment_1874401

    Please explain what type of systems you have.

    In Floor

    Forced air with or without A/C

    Heat Pump

    Cast iron radiators

    Baseboard

  • Cyclist77
    Cyclist77 Member Posts: 226

    We have a F/A with A/C and I retrofitted our home about 16 years ago with staple up radiant floor heat. Thus the need for 2 thermostats. We use the F/A in the shoulder seasons.

  • Intplm.
    Intplm. Member Posts: 2,795

    I miss the old T87F series Tstat. Little to no troubles at all.

  • Expenses1188
    Expenses1188 Member Posts: 4

    That round thermostat has an undocumented, difficult to change, unusual battery in it.

    Probably needs a new battery.

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