Help troubleshoot zone valve.

Harley

End switch in Thermostat, Zone Valve or TACO?
I am a home owner, I have swapped out zone valves
and other minor items, but need a bit of
direction.
Thanks for your help.

Harley

Help troubleshoot zone valve.

Please help troubleshoot a distribution problem: Symptoms.

1.Zone 1 Thermostat calls for heat. TACO control shows light on for zone 1 thermostat, but light for zone valve does not come on. Water is not moving in system.

2. Turn on a second zone thermostat. TACO control shows both second zone thermostat and valve on and that zone works fine.

3. Once the second zone thermostat is turned on, the original #1 zone works in conjunction, the zone valve light comes on, and water moves through zone 1.

What would cause the non working zone to begin to work, only when a second zone is turned on? Is it in the transformer for the zone valve or the zone valve? Or the TACO controller?

Thank you.

Robert O'Brien

Bad

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JOEY_3

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in the zone valve replace zone valve

Harley

Where is best place to buy

I have purchased zone valves in the past
from Controls Depot online. Is that the best
online supply nowadays?

Harley

Just replace Head?

Can I just replace the head if it is an older Honeywell
Model 1035?