[RCGA]

I have a 3 zone house, new-ish furnace with an inspection done a month ago. No issues.

Today, our basement zone isn't kicking in, and I'm not sure if the thermostat is simply broken and not calling for heat, or something else is not working.

The basement zone is one big rectangular loop. The water pipe at the start of the zone is hot, but gets progressively cooler as it continues down the line. Our entertainment room, which is the last room on the run, has hot water radiation pipes that are cold to the touch.

Any ideas on things I could troubleshoot?

 

[roughneck]

Does the zone pump start when the thermostat calls for heat?

 

[RCGA]

Does the zone pump start when the thermostat calls for heat?

No. I've move the dial from low to high and it doesn't activate the furnace.

 

[Bondo]

Ayuh,.... Are the 3 zones fed by pumps or zone valves, 'n a common pump,..??

That zone, either the valve ain't openin', or the pump ain't pumpin',....

Do ya have a Multimeter to diagnose the issue with,..??

It appears the boiler is hot, 'n pressurized, but the water ain't gettin' to that zone,.....

How 'bout a picture of the near boiler plumbin', 'n any zone valves/ zone pumps,..??

 

[RCGA]

Each zone has it's own zone valve. The basement zone valve is rather new.

 

[Bondo]

Each zone has it's own zone valve. The basement zone valve is rather new.

Ayuh,.... When ya turn up the t-stat, the valve has to open, 'n the pump has to run,....

Can you Test any of these things,..??

If not, call a Tech,....

 

[beenthere]

Set the low limit to 140, and the high limit to 180.

 

[RCGA]

Set the low limit to 140, and the high limit to 180.

I assume that's for the water temp?

 

[beenthere]

I assume that's for the water temp?

Yes..

 

[RCGA]

Is there a way to confirm that it's either my thermostat that's faulting or my zone value without replacing either?

 

[beenthere]

Jumper the wires at the thermostat. If zone valve works, its most likely the thermostat.

If it doesn't open, could be zone valve or wires.

 

[RCGA]

Jumper the wires at the thermostat.

How do I do that?

 

[beenthere]

Either remove them from the thermostat and wire nut them together. Or use alligator jumpers clips.

 

[RCGA]

Touching the wires together did nothing. Although I didn't get a chance to nut them together

 

[RCGA]

If the thermostat opens the value, what activates the furnace to open and pump water?

Because i can manually open the value and the pipe gets hot, but the pump doesn't activate and start pushing water.

 

[beenthere]

Usually an end switch in the zone valve. But your system may have the basement set up as a slave zone, and requires another zone to also be calling.