Search found 8 matches

by serpico1
Mon Jan 24, 2022 1:09 pm
Forum: Help and Advice
Topic: EWC ST-3E to EWC NCM-300 Wiring?
Replies: 5
Views: 2957

Re: EWC ST-3E to EWC NCM-300 Wiring?

I havent swapped out the panels yet. its been pretty cold here, so I was waiting for a more milder day before starting the swap. But, from one of the bulletins I received from EWC for swapping out the ST to the NCM300, the O & B wires are not needed. I know the Nest state requires a common wire,...
by serpico1
Tue Jan 18, 2022 8:01 pm
Forum: Help and Advice
Topic: EWC ST-3E to EWC NCM-300 Wiring?
Replies: 5
Views: 2957

Re: EWC ST-3E to EWC NCM-300 Wiring?

Ok, thanks
I will reach out tomorrow when I am home
by serpico1
Tue Jan 18, 2022 11:45 am
Forum: Help and Advice
Topic: EWC ST-3E to EWC NCM-300 Wiring?
Replies: 5
Views: 2957

EWC ST-3E to EWC NCM-300 Wiring?

I have purchased a NCM-300 board to replace my old ST-3E board so that I can use the Nest thermostats throughout my house. I sounded like it would be a basic swap out, but the wiring of my old board and thermostats is confusing me. I have down DIY electrical wiring in the past, so I am comfortable d...
by serpico1
Tue Jan 04, 2022 12:48 pm
Forum: Help and Advice
Topic: NCM300 and Nest thermostats question
Replies: 1
Views: 2197

NCM300 and Nest thermostats question

I recently purchased the NCM300 to replace my old ewc board which did not support wi-fi thermostats. My question is, I have 3 damper zones and only 2 our of 3 nest thermostats. On my old board, I have a regular Heat/off/cool thermostat set on Zone 1 and the nest thermostats on zone 2 & 3. When I...
by serpico1
Sat Jan 04, 2020 6:26 pm
Forum: Help and Advice
Topic: Zones not working correctly
Replies: 4
Views: 11606

Re: Zones not working correctly

Is there a way to troubleshoot this problem, to determine if its a damper problem, circuit board or relay problem? Are there certified techs that can come out and analyze this?
by serpico1
Fri Oct 25, 2019 7:38 pm
Forum: Help and Advice
Topic: Zones not working correctly
Replies: 4
Views: 11606

Re: Zones not working correctly

Im not sure what the problem may be. As I said the system was installed in 2006 and has been running perfect until this past year. the only thing I can think of, is I did have to replace the thermostat for one of the zones. Before all zones were running on LuxPro thermostats. Until the thermostat fo...
by serpico1
Thu Oct 24, 2019 12:00 pm
Forum: Help and Advice
Topic: Zones not working correctly
Replies: 4
Views: 11606

Re: Zones not working correctly

Ok
Thank you
by serpico1
Thu Oct 17, 2019 6:41 pm
Forum: Help and Advice
Topic: Zones not working correctly
Replies: 4
Views: 11606

Zones not working correctly

I have an EWC ST 3E system. It was installed by an HVAC contractor back in 2006. I have forced heating and A/C with 3 zone dampers. Up until this past year, all the zones opened and closed correctly. Then this year, when I started to use the A/C regardless of which thermostat caused the A/C to come ...