Last night the heat in my bedrooms came on. I removed the thermostat, no change. Went down to the basement and changed my zone valve head (TACO) and still have the same issue? What else should I look for?
The boiler is an old weil Mclean the two zone valves are TACO 571-2. Heat has been off for several weeks if that matters?
The boiler is an old weil Mclean the two zone valves are TACO 571-2. Heat has been off for several weeks if that matters?