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Clicking thermostat

  • 05-01-2017 11:55pm
    #1
    yesap
    Registered Users, Registered Users 2 Posts: 57 ✭✭


    I have moved into a new house and I am finding the clicking of the horstmann dial thermostat in the main bedroom to be a little annoying.

    Is it right that it clicks off when temperature reached and then 10 min later clicks on again when temp falls only for it to click off again 10 min later and continually repeat the cycle?

    Might need to just get used to it but also thinking this would put excessive strain on heat pump as it is cycling on/off constantly due to 1 degree rise and falls?


Comments

  • #2
    Iderown
    Registered Users, Registered Users 2 Posts: 233 ✭✭Iderown


    A guess. Some room thermostats feature a form of "predictive switching". The thermostat switches frequently as the sensed air temperature approaches the set temperature. It is done by an internal resistor placed close to the bimetal sensing strip.
    I don't know the Horstmann thermostat. I'm now well into retirement. We had a Danfoss RMT230 type which featured this. The burner that we had (HAD!) was wood-pellet burning. The effect of the relatively rapid switching was to make the life of the pellet ignition element very short.
    Anyway, the internal resistor (if this is the problem) in the thermostat is easily defeated by disconnecting it. Consult an electrician.


  • #3
    yesap
    Registered Users, Registered Users 2 Posts: 57 ✭✭yesap


    Thanks but I genuinely think the thermostat is functioning properly, maybe I am wrong.

    I suppose my question is whether this is how thermostats are meant to work.... by clicking off when heat reached and then of course clicking back on again 10 minutes later as the temperature naturally falls again... then repeating this cycle? Just seems like lots of clicks and heating being fired up and then off again??


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