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Switch Relay/Circ Pump not listening to Stat
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.