EWC Controls Forum

Hello Steven. I called no answer. Let me know a good time to call. The HVAC system acted up again tonight. This time I tapped the black relays along the left-side on the control board with my finger and the heat turned off. I suspect one or two relays might be getting stuck causing the system to ...

Hello All. I new to the Forum and looking for some advice/help with my heating system. I have a propane system with a NCM300 control board and 3 zones , each with Honeywell thermostats, model # TH6220U2000. Recently this winter I began to experience an anomaly with my system where the thermostats ...