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Switch Relay/Circ Pump not listening to Stat
Hello -
I have a Weil-McLain P-WTGO-6 (Series 3) Oil-fired Water Boiler running baseboard radiant. I have a Taco SR504 Switching Relay running 4 Zones.
My issue is that zones 3 and 4 don't seem to be listening to their stats. Despite their set points being satisfied, the zone stays lit (RED zone indicator light) on the Taco, and I can hear the Circ Pump and furnace continue to run. They will continue to run in this manner even if I turn the Stats OFF. The only way I have been able to get it to stop is to disconnect one of the Stat wires where it comes into the respective zone on the Taco.
Thoughts?
I have a Weil-McLain P-WTGO-6 (Series 3) Oil-fired Water Boiler running baseboard radiant. I have a Taco SR504 Switching Relay running 4 Zones.
My issue is that zones 3 and 4 don't seem to be listening to their stats. Despite their set points being satisfied, the zone stays lit (RED zone indicator light) on the Taco, and I can hear the Circ Pump and furnace continue to run. They will continue to run in this manner even if I turn the Stats OFF. The only way I have been able to get it to stop is to disconnect one of the Stat wires where it comes into the respective zone on the Taco.
Thoughts?
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Mechanical Enthusiast
Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's
Easyio FG20 Controller
"72°F Mechanical, LLC"
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John is the Boilers and Hydronic Heating Systems Course Instructor at NYC's Mechanics Institute, a professional Master Plumber, licensed by The Department of Buildings of The City of New York, and works extensively in NYC while consulting for clients in and out of state.
For residential service and installations in New Jersey, please see Toro Plumbing & Mechanical and fill out our contacts page, upload pics, and submit, or call (973-672-1000).
Mechanical Enthusiast
Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's
Easyio FG20 Controller
With 2 zones constantly running but stop when you disconnect a wire from TT, it seems like a dead short on a 4 (or more) conductor cable. Hang any pictures lately? Or any work using nails or screws?