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Posted by on November 18, 2006, 10:17 am
The heat will stop upstairs if I turn the knob at the bottom of the
cast iron radiater towards "CLOSE". However, this seems to stop
heating the entire upstairs. In addition, when I slightly "OPEN" this
knob, the heat seems to get uncontrollably warm again, to approximately
80 degrees.
Edwin Pawlowski wrote:
> > Hello all,
> >
> > I have an older boiler and both downstairs and upstairs thermostats are
> > set to 60. However, the thermostat reads just a tick under 80. The
> > pipes/radiators feel very warm. Is there anything I can do to correct
> > this, short of turning off the boiler? I would like to get this
> > working properly myself, but do I need to call a professional?
>
> Could be a few things. Thermostat, stuck relay, stuck contacts.
>
> You can eliminate the thermostats by simply disconnecting them. Just remove
> one wire. The thermostat operates a relay that pulls in the 120 volts to
> get the heater running. If the contacts stick, that will do it also. I'd
> want to be assured they are working properly if you do release them from
> sticking. You don't want to leave the house for the day and have it stick
> again. Sometimes you need a pro.
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