DipStik
New Member
I've a 3-zone gas heating system (baseboard). Since last week, there has been no heating on the ground floor whereas the first floor is heating well (the basement heating was not on but it's not working either). There is one circulator pump and three zone valves. I tried switching the thermostats to see if they're the problem; the one from the ground floor worked on the first floor. That excluded the thermostats.
Ground Floor: When the thermostat is turned on, the valve opens up (the lever on the zone valve motor falls loose) but the furnace doesn't fire up. I changed the switch on the zone valve (bought a new honeywell zone valve (8043E1012) and replaced the electric portion of the old valve only). The furnace fired up on e and now its back to its old behavior. We tried draining the system (there are no bleeders on the system) but that did not help either.
Any advice would be highly appreciated. Thx
Ground Floor: When the thermostat is turned on, the valve opens up (the lever on the zone valve motor falls loose) but the furnace doesn't fire up. I changed the switch on the zone valve (bought a new honeywell zone valve (8043E1012) and replaced the electric portion of the old valve only). The furnace fired up on e and now its back to its old behavior. We tried draining the system (there are no bleeders on the system) but that did not help either.
Any advice would be highly appreciated. Thx