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ST-2E / ST-3E

Last post by sadms « Wed Sep 10, 2025 5:08 pm
Replies: 1
by Steven W. » Tue Jun 25, 2019 10:30 am

1 Replies

132145 Views

Last post by sadms
Wed Sep 10, 2025 5:08 pm
Older Technical Documents

Last post by John B. « Thu Jun 13, 2019 10:34 am

by John B. » Thu Jun 13, 2019 10:34 am

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Last post by John B.
Thu Jun 13, 2019 10:34 am
Welcome / Forum Rules

Last post by Ric « Mon Oct 05, 2009 11:20 am

by Ric » Mon Oct 05, 2009 11:20 am

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Last post by Ric
Mon Oct 05, 2009 11:20 am

Topics

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Which zone control to use?

Last post by Steven W. « Tue Jun 01, 2021 9:17 am
Replies: 5
by Tlwilk » Sun Apr 13, 2014 6:53 pm

5 Replies

44926 Views

Last post by Steven W.
Tue Jun 01, 2021 9:17 am
Ruud econet system with EWC ECONET 3 zone panel acting strange

Last post by Steven W. « Tue May 04, 2021 11:25 am
Replies: 1
by Btettemer » Tue May 04, 2021 11:11 am

1 Replies

17996 Views

Last post by Steven W.
Tue May 04, 2021 11:25 am
ST-2D to NCM-300 upgrade

Last post by Steven W. « Mon Apr 26, 2021 8:32 am
Replies: 2
by MarkWeinberg » Sat Apr 03, 2021 10:13 pm

2 Replies

20263 Views

Last post by Steven W.
Mon Apr 26, 2021 8:32 am
NCM 300 Heat call

Last post by Steven W. « Fri Mar 26, 2021 3:30 pm
Replies: 1
by ackergeorge » Fri Mar 26, 2021 2:56 pm

1 Replies

17370 Views

Last post by Steven W.
Fri Mar 26, 2021 3:30 pm
Wiring 2 stage nest thermostat to zone board?

Last post by Steven W. « Mon Mar 22, 2021 9:36 am
Replies: 1
by brett14 » Fri Mar 19, 2021 5:47 pm

1 Replies

16076 Views

Last post by Steven W.
Mon Mar 22, 2021 9:36 am
NCM 300

Last post by ackergeorge « Sun Mar 14, 2021 6:49 pm
Replies: 2
by ackergeorge » Thu Mar 11, 2021 11:40 pm

2 Replies

21991 Views

Last post by ackergeorge
Sun Mar 14, 2021 6:49 pm
BMPlus 3000 with 4 Zones, 2 Stage A/C and Nest Thermostats

Last post by Steven W. « Mon Mar 08, 2021 8:35 am
Replies: 1
by U019806 » Sun Mar 07, 2021 9:26 pm

1 Replies

17639 Views

Last post by Steven W.
Mon Mar 08, 2021 8:35 am
Have Model EWC-ST-3D to NCM300 retrofit

Last post by avtex « Thu Mar 04, 2021 2:58 pm
Replies: 6
by Ifsrob888 » Sat May 23, 2015 1:21 pm

6 Replies

40022 Views

Last post by avtex
Thu Mar 04, 2021 2:58 pm
Smart thermostats for

Last post by Steven W. « Mon Feb 08, 2021 11:35 am
Replies: 1
by wingding » Thu Jan 28, 2021 2:23 pm

1 Replies

16270 Views

Last post by Steven W.
Mon Feb 08, 2021 11:35 am
Rheem/Ruud Econet Communicating HVAC with UltraZone

Last post by SK_EWC « Mon Feb 01, 2021 2:13 pm
Replies: 3
by SK_EWC » Fri Jan 29, 2021 12:40 pm

3 Replies

27280 Views

Last post by SK_EWC
Mon Feb 01, 2021 2:13 pm
NCM 300 Nest TSTAT

Last post by rick62783 « Tue Dec 29, 2020 6:11 pm
Replies: 2
by rick62783 » Thu Dec 24, 2020 12:10 pm

2 Replies

20614 Views

Last post by rick62783
Tue Dec 29, 2020 6:11 pm
ComfortNet CTK04 displays wrong outdoor temperature

Last post by Squitich35 « Wed Dec 23, 2020 12:13 pm
Replies: 2
by npp » Thu Jan 02, 2020 11:11 am

2 Replies

27713 Views

Last post by Squitich35
Wed Dec 23, 2020 12:13 pm
I have an oil heat and 3 zones and 2 Sensi

Last post by Steven W. « Fri Dec 04, 2020 4:21 pm
Replies: 1
by mpeak » Fri Dec 04, 2020 3:58 pm

1 Replies

16734 Views

Last post by Steven W.
Fri Dec 04, 2020 4:21 pm
What's the definition of percentage in a zone, and what is it used for?

Last post by John B. « Tue Nov 24, 2020 10:36 am
Replies: 4
by anibal » Thu Nov 19, 2020 11:29 pm

4 Replies

426221 Views

Last post by John B.
Tue Nov 24, 2020 10:36 am
NCM-300 w/ecobee tstats

Last post by John B. « Fri Nov 20, 2020 9:01 am
Replies: 2
by tobybowen » Thu Nov 19, 2020 3:05 pm

2 Replies

20400 Views

Last post by John B.
Fri Nov 20, 2020 9:01 am
Thermostat recommendation for UT-3000

Last post by anibal « Wed Nov 18, 2020 5:23 pm
Replies: 10
by richarda » Tue Apr 24, 2018 10:13 am
1

2
10 Replies

91229 Views

Last post by anibal
Wed Nov 18, 2020 5:23 pm
Issue With Zone Panel Dumping To Non Calling Zone

Last post by Ric « Tue Apr 07, 2020 1:04 pm
Replies: 1
by Aeros » Tue Apr 07, 2020 10:09 am

1 Replies

20248 Views

Last post by Ric
Tue Apr 07, 2020 1:04 pm
EWC-ST-2E to NCM-300 for NEST

Last post by Steven W. « Tue Mar 10, 2020 3:09 pm
Replies: 3
by jtsi2001 » Tue Nov 19, 2019 5:54 pm

3 Replies

29854 Views

Last post by Steven W.
Tue Mar 10, 2020 3:09 pm
EWC Effectiveness with Undersized Ducts

Last post by Steven W. « Tue Feb 11, 2020 3:50 pm
Replies: 3
by ibhipru » Thu Feb 06, 2020 9:30 pm

3 Replies

27094 Views

Last post by Steven W.
Tue Feb 11, 2020 3:50 pm
NCM300 - Heat Constanly Running

Last post by Steven W. « Thu Feb 06, 2020 11:00 am
Replies: 3
by leolfds » Sun Jan 26, 2020 4:01 pm

3 Replies

27441 Views

Last post by Steven W.
Thu Feb 06, 2020 11:00 am
Replacing ST-2B with ST-2E

Last post by Steven W. « Mon Jan 20, 2020 11:17 am
Replies: 1
by Dwalsh » Sun Jan 19, 2020 4:09 pm

1 Replies

18150 Views

Last post by Steven W.
Mon Jan 20, 2020 11:17 am
Zones not working correctly

Last post by serpico1 « Sat Jan 04, 2020 6:26 pm
Replies: 4
by serpico1 » Thu Oct 17, 2019 6:41 pm

4 Replies

35086 Views

Last post by serpico1
Sat Jan 04, 2020 6:26 pm
BMPlus 3000 needs cpu reset

Last post by Steven W. « Mon Dec 23, 2019 2:55 pm
Replies: 1
by Nomm88 » Mon Dec 23, 2019 1:35 pm

1 Replies

18181 Views

Last post by Steven W.
Mon Dec 23, 2019 2:55 pm
Upgrading from ABS-OR-3 question

Last post by Steven W. « Wed Dec 18, 2019 9:02 am
Replies: 1
by trbovmj » Tue Dec 17, 2019 7:38 pm

1 Replies

17879 Views

Last post by Steven W.
Wed Dec 18, 2019 9:02 am
ST2D -> NCM300 Wiring

Last post by Steven W. « Tue Dec 17, 2019 3:03 pm
Replies: 1
by msinger212 » Tue Dec 17, 2019 2:10 pm

1 Replies

17756 Views

Last post by Steven W.
Tue Dec 17, 2019 3:03 pm

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