I have a problem the burner does not shut off. I turned the thermastat and the water temp down still running and then disconnected both and it still would not shut down ------------------------------------
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Turn it off at the emergency switch and call somebody in
Probably shorted thermostat wire, but flip off the panel breaker for the unit if it doesn't have a separate 120V switch and get professional help.
Joe
Not enough info. Sounds like a hot water boiler, but it's not clear what water temperature you turned down. A thermostat can't keep a boiler running continuously, however a bad aquastat in an aquastat relay can. It would help if you described the system and all it's components, but it does sound like a defective aquastat relay
Well if it's really just a shorted theromstat wiret, does he need professional help? Is the OP known to not be good at repairs. Winter's almost over in much of the world. He has the whole summer to fix it.
If it burns for eight days and eight nights dude, get back to us quick!!
Yes, because the burner is controlled by an aquastat. If he does not know that or how to get to it and test it, a pro is needed. In most setups, the thermostat turns the circulator on when it wants heat.
In this case it can be a bad relay, sensor, aquastat.
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