It is a gas fired boiler. The past couple of days it has been coming
on by itself in the morning which it hasn't done in awhile, but it
still does not stay on long enough to bring the temperature in my
small living room up to 68. When it shuts itself off, the water temp
seems to drop pretty fast but then it doesn't come back on. We are
going to try cleaning the sensor near the pilot light first then call
a serviceman if that doesn't work. Thanks. At least I know that it
isn't a water pressure problem.


On Dec 18, 7:31 am, "Edwin Pawlowski" wrote:
wrote in message

...

I have a Mini-Therm hot water boiler that no longer comes on when the
thermostat calls for it. I have to push an ignition button each time
including ~4am when the temp in the house goes below 62 degrees. The
boiler also shuts itself off before the desired temperature is reached
and I have to manually restart it each time. This has ended up being
about 10+ times a day during really cold weather and is getting
tiresome.

It shuts itself off because the internal water temperature is up to where it
should be. The thermostat controls the circulator, an aquastat inside
controls the burner so it does not overheat. It should cycle off and on as
needed.

There are numerous reasons it will not start. Is it oil or gas fired? Each
has a different set of problem. It may be something as simple as cleaning
the igniter or more complex as a fuel pump. If you have no clue how these
things work, call a serviceman and let him do it.



I've also noticed the water pressure is only at 15 psi. Isn't it
supposed to be at 30 psi?

15 psi is plenty



I've bled all of the upstairs radiators with the boiler on (which is
what the previous owner told me) and got a small amount of air out of
each one but when I opened one of the radiators in the basement, there
was no valve to bleed it. I stopped at this point since the other 2
radiators downstairs are currently painted shut.

That is not your problem here.



Any suggestions? Where should I start?

Call a service tech.