Post
by samantha »
Fri Sep 19, 2008 5:09 pm
Hi Htg,
The programmer is a Honeywell ST6400C. I have a Grundfos pump and a Honeywell V4073A 3 port valve. If i move the lever on the valve over to manual position myself, then yes, the heating will come on. I was wondering whether the valve could be faulty, or wouldn't it keep coming on in the morning if there was a problem with the valve? What do you think? Still the programmer? Is it possible that the programmer will work on every other time, except the second and third heating programmed times? Thanks for your help so far! Samantha