Search found 2 matches

by leolfds
Thu Jan 30, 2020 8:38 pm
Forum: Help and Advice
Topic: NCM300 - Heat Constanly Running
Replies: 3
Views: 8231

Re: NCM300 - Heat Constanly Running

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 sta...
by leolfds
Sun Jan 26, 2020 4:01 pm
Forum: Help and Advice
Topic: NCM300 - Heat Constanly Running
Replies: 3
Views: 8231

NCM300 - Heat Constanly Running

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 se...