I recently bought a house and there are two zones for heat. The thing is, both zones are controlled by one thermostat (1st floor). So last night, my brother-in law and I tried to split the two zones and installed a new thermostat on the second floor and wired it down to the basement. That was the easy part.

The problem came when we tried to wire the second thermostat to the second zone control in the basement. From the power supply to the first floor zone control there is a blue, white, and red wire connected to the zone control. From there originally there was a white and red wire jump to the second zone control which powered the heat for the whole house. So we figured all we would have to do is hook up the second zone control (white and red wire) from the second floor to the zone control in the basement and we should be all set.

Here's the kicker, it new enough to kick on the furnace when we turned the thermostat all the way up, but the pipes never heated up. It just seemed very strange that that would happen. We let it run for a good five minutes, but no hot water ran through the pipes.

Also, we later unhooked the second zone wiring and hooked the wires back up to the first zone control via the jump and we once again could control the heat from one thermostat controlling both the first and second floor zones.

Are we wiring the zones incorrectly? Is the second zone control possibly faulty? Any suggestions would be helpful. Thanks.