Why is one of my heating zones not working?

Bleed the Radiators



Sometimes, a heating zone will not work properly because water cannot move through the baseboard radiators. This happens when an air bubble blocks the pipes. To help draw out air, locate the bleeder valves on all the radiators in the affected heating zone.

How do you fix a stuck zone valve on a taco?





Quote from the video:
Quote from Youtube video: It could be stuck a bit from a little corrosion like I've got here. But don't go crazy just give it a little wiggle. And pull it straight. Off.

How do you test a taco zone valve?

Quote from the video:
Quote from Youtube video: So it is full of water right now on the water should just go ahead and fall through. And if your time and that that should be pretty darn soon. It's not quite yet not quite yet it should be.

How do you test a heating zone valve?

Quote from the video:
Quote from Youtube video: Make sure that both of them are set below the room temperature of both rooms. And then I turn this thermostat.

How do I know if my zone valve is working?

To test if your zone valve is working, switch off demand for your hot water (you can do this via the timer – set Hot Water to Off). Now create demand for central heating – turn up the thermostat and make sure the timer is set to ‘On’ or ‘Continious’.

How do you troubleshoot zone dampers?





Put the damper into an open position and check the registers once again to see if the airflow starts. If the damper is closed and you are feeling low airflow, or none at all, it is most likely a bad damper. For the automatic control damper, turn your HVAC system on. Check for airflow in the registers.

How do you manually open the Taco zone valve?

Quote from the video:
Quote from Youtube video: Pull that lever down make your way towards the part of the house that had no heat. And see if you can feel the heat coming on touch the baseboard. See if it's warming up.

Do zone valves fail open?

The zone valve opens and closes according to the temperature in the room as determined by the thermostat and your settings. Sometimes the zone valve will fail to operate properly. This can be caused by a malfunctioning part on the valve itself or by a faulty thermostat or a faulty connection between the two.

Can you manually open a zone valve?

Quote from the video:
Quote from Youtube video: But you can manually. Move this leaver across and lock it fully open like that and it would allow flow for it.

What happens if a zone valve is installed backwards?



Reply: problems caused by zone valves installed backwards include banging pipes and reduced valve life. A slow-closing type zone valve may cause banging heating pipes if installed backwards.

How does a Taco flow valve work?

Taco Flo-Chek prevents “gravity” circulation in forced hot water heating systems during periods when the boiler is hot, but the space heating zone is not wanted. This makes it possible to use the heating boiler to maintain domestic hot water year-round. Flo-Chek open automatically when the circulator starts running.

How do you check if a Honeywell zone valve is working?

Quote from the video:
Quote from Youtube video: If you hear the springing noise that means the valve is de-energized. There is no power being sent to the monitor. Or something is not working.

How do you test a zone?



Quote from the video:
Quote from Youtube video: The current coming out of the zone is very little on this particular alarm it's only one milliamp. So what i want to do is test that each zone is outputting. The same current.

How do I know if my heating is working?

What to Check First If Your Heater Isn’t Working

  1. Check the Furnace Power Switch. Some furnaces have an on/off switch that is frustratingly easy to switch off by mistake. …
  2. Look at Your Fuse Box That Powers Your Heater. …
  3. Check the Batteries in Your Thermostat. …
  4. Replace the Air Filters. …
  5. Notice Any Odors. …
  6. Heater Isn’t Working?


Do zone valves go on supply or return?

Install zone valves on the supply side of zone circuits to block upward gravity flow. Install a swing check valve on the return side of each zone to block the return side. The latter is necessary because buoyancy forces try to establish two-way flow in the return pipe.

How does a heating zone valve work?



Quote from the video:
Quote from Youtube video: Completely opens an end switch tells the circulator pump to turn on and water begins to circulate from the boiler to that space. When the space reaches the selected temperature the zone valve closes.

What position should zone valve be in?

Otherwise, this wiring is in series with the valve on/off signal. The zone valve needs to be positioned after the boiler and circulator of the central heating system. They can be located either on the hot side (before the hot water goes into the zone) or on the cold side (after the water goes throughout the building).