Hey Guys-
I had a weird thing happen with my boiler yesterday. The wife noted the home was getting much cooler and saw no heat was coming out of the PSU unit in a bedroom.
I walked her through the basic electrical and switch checks and confirmed with her the boiler was up to temperature.
So... the plumber came out. He determined that there was no water circulating betwen the boiler and the rest of the plumbing, but the circulator appeared to be working.
He believes the mixing valve was stuck closed and not allowing water to circulate. A couple hard raps on the mixing valve housing appeared to free it up and its working fine again.
I have the Danfoss mixing valve that New Horizon sells. I haven't heard of the mixing valves doing this before and wondered if anyone else has.
FWIW- I thought the circulator would have been the problem, but the plumber saays no. He says circulators work or die- he hasn't had an intermittent one.
I had a weird thing happen with my boiler yesterday. The wife noted the home was getting much cooler and saw no heat was coming out of the PSU unit in a bedroom.
I walked her through the basic electrical and switch checks and confirmed with her the boiler was up to temperature.
So... the plumber came out. He determined that there was no water circulating betwen the boiler and the rest of the plumbing, but the circulator appeared to be working.
He believes the mixing valve was stuck closed and not allowing water to circulate. A couple hard raps on the mixing valve housing appeared to free it up and its working fine again.
I have the Danfoss mixing valve that New Horizon sells. I haven't heard of the mixing valves doing this before and wondered if anyone else has.
FWIW- I thought the circulator would have been the problem, but the plumber saays no. He says circulators work or die- he hasn't had an intermittent one.