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System 2000 heat going to heating zone when hot water zone is calling for heat
Hi all. I have a System2000 model EK-1f. I noticed a while back that when the hot water zone is calling for heat, looking at the control panel light, the hot water and zone 1 heat output lights come on and heat is actually thrown to zone 1 also. The reason I noticed this is I got heat in the zone 1 rooms in the middle of summer. I removed the thrermostat that controls zone 1 to make sure it was not a thermostat issue in zone 1. I have 4 heating zones total. Even worse, after the hot water zone light turns off and the hot water tank is fully satisfied from a temperature standpoint, that zones output light goes off but the zone 1 output light stays on and continues to dump heat into zone one until all the heat is dumped from the boiler. Is this normal that zone one becomes the final dumping point of heat. A picture of the System2000 controller panel is attached.
Thanks ahead for your help