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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

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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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Mon Oct 05, 2009 11:20 am

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BMP3000 with OAS allow time out to furnace

Last post by Steven W. « Thu Dec 07, 2023 10:27 am
Replies: 1
by meassick » Wed Dec 06, 2023 7:34 pm

1 Replies

20628 Views

Last post by Steven W.
Thu Dec 07, 2023 10:27 am
Emergency Heat Heat pump

Last post by Steven W. « Fri Dec 01, 2023 8:40 am
Replies: 1
by BernieL » Fri Dec 01, 2023 7:19 am

1 Replies

18380 Views

Last post by Steven W.
Fri Dec 01, 2023 8:40 am
UltraZone BMP Plus300 rev B Ecobee Premium

Last post by Steven W. « Thu Nov 30, 2023 1:35 pm
Replies: 1
by charlese » Wed Nov 29, 2023 7:04 pm

1 Replies

17606 Views

Last post by Steven W.
Thu Nov 30, 2023 1:35 pm
ND5 actuator in purchase

Last post by Steven W. « Tue Nov 28, 2023 1:21 pm
Replies: 1
by Howard » Tue Nov 28, 2023 1:11 pm

1 Replies

17849 Views

Last post by Steven W.
Tue Nov 28, 2023 1:21 pm
Have BM4000 looking to get Wifi Thermostat with Humidity control

Last post by John miche « Sat Nov 25, 2023 1:15 am
Replies: 15
by scottz » Tue Apr 12, 2016 11:22 pm
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2
15 Replies

359694 Views

Last post by John miche
Sat Nov 25, 2023 1:15 am
NCM-300 Will only heat for 2 min.

Last post by Steven W. « Tue Nov 14, 2023 9:26 am
Replies: 1
by jackd397 » Mon Nov 13, 2023 6:16 pm

1 Replies

16777 Views

Last post by Steven W.
Tue Nov 14, 2023 9:26 am
Nest Learning Thermostat Upgrade Help w/ EWC-ST-2E

Last post by Jstlooking « Sat Nov 11, 2023 6:48 pm
Replies: 11
by Killtrend » Wed Nov 09, 2022 7:04 pm
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2
11 Replies

170391 Views

Last post by Jstlooking
Sat Nov 11, 2023 6:48 pm
Continuous fan in heat mode on NCM300 System

Last post by James1507 « Sun Oct 29, 2023 6:30 pm
Replies: 10
by chrismaylor » Tue Nov 01, 2011 12:23 pm
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2
10 Replies

176594 Views

Last post by James1507
Sun Oct 29, 2023 6:30 pm
ST-2E to NMC-300 Wiring

Last post by jacksgj « Thu Oct 19, 2023 5:37 am
Replies: 2
by jacksgj » Wed Oct 18, 2023 2:51 pm

2 Replies

21328 Views

Last post by jacksgj
Thu Oct 19, 2023 5:37 am
Short Cyvle Zone 2 Ultra Zone EWC300

Last post by Rob300 « Fri Sep 29, 2023 1:11 pm
Replies: 2
by Rob300 » Wed Sep 20, 2023 4:15 am

2 Replies

21313 Views

Last post by Rob300
Fri Sep 29, 2023 1:11 pm
NCM-300 + 12URD Control

Last post by rhhaden « Wed Sep 13, 2023 9:09 pm
Replies: 1
by rhhaden » Mon Sep 11, 2023 11:28 am

1 Replies

15861 Views

Last post by rhhaden
Wed Sep 13, 2023 9:09 pm
Manually opening MA-ND4 / MA-ND5 / MRK

Last post by Ric « Mon Aug 14, 2023 8:15 am
Replies: 1
by Xero100 » Sat Aug 12, 2023 11:25 am

1 Replies

21916 Views

Last post by Ric
Mon Aug 14, 2023 8:15 am
ST-3D to NCM-300

Last post by MainerDIY « Thu Aug 03, 2023 3:22 pm
Replies: 1
by MainerDIY » Thu Aug 03, 2023 3:17 pm

1 Replies

14458 Views

Last post by MainerDIY
Thu Aug 03, 2023 3:22 pm
ncm-300 round robin

Last post by rhhaden « Tue Aug 01, 2023 9:26 am
Replies: 2
by rhhaden » Mon Jul 31, 2023 9:36 pm

2 Replies

20506 Views

Last post by rhhaden
Tue Aug 01, 2023 9:26 am
Zones not working

Last post by Steven W. « Fri Jul 14, 2023 2:30 pm
Replies: 1
by Blairebear1 » Thu Jul 13, 2023 5:18 pm

1 Replies

16359 Views

Last post by Steven W.
Fri Jul 14, 2023 2:30 pm
ST-2E to NCM-300 - Extra wires

Last post by delam0 « Mon Jul 10, 2023 5:33 am
Replies: 1
by ajcast5201 » Wed Apr 19, 2023 8:02 pm

1 Replies

18270 Views

Last post by delam0
Mon Jul 10, 2023 5:33 am
When Zone 1 (ground floor) temperature is satisfied AC unit stops

Last post by delam0 « Sat Jul 08, 2023 2:20 am
Replies: 2
by rdmitchell97006 » Sun May 21, 2023 9:50 pm

2 Replies

22293 Views

Last post by delam0
Sat Jul 08, 2023 2:20 am
Zoning: Approach to System Evaluation

Last post by john_chavez « Tue Apr 18, 2023 10:26 pm

by john_chavez » Tue Apr 18, 2023 10:26 pm

0 Replies

79222 Views

Last post by john_chavez
Tue Apr 18, 2023 10:26 pm
EWC ST 2D zone one wont shut off until zone 2 does

Last post by Steven W. « Tue Apr 18, 2023 8:50 am
Replies: 5
by msrocks » Thu Jun 06, 2019 6:52 pm

5 Replies

57452 Views

Last post by Steven W.
Tue Apr 18, 2023 8:50 am
recommendation for a 4 zone control panel

Last post by ljdegennaro2021 « Tue Apr 04, 2023 3:31 pm
Replies: 2
by ljdegennaro2021 » Sat Apr 01, 2023 12:25 pm

2 Replies

21822 Views

Last post by ljdegennaro2021
Tue Apr 04, 2023 3:31 pm
Outdoor hardwire temp reading static at 73

Last post by seomaniak « Mon Mar 27, 2023 1:13 pm
Replies: 6
by Aljessee » Sat Jul 10, 2021 3:28 pm

6 Replies

121841 Views

Last post by seomaniak
Mon Mar 27, 2023 1:13 pm
Ewc technical support

Last post by Pbrowne « Tue Mar 21, 2023 3:38 pm

by Pbrowne » Tue Mar 21, 2023 3:38 pm

0 Replies

78292 Views

Last post by Pbrowne
Tue Mar 21, 2023 3:38 pm
what if Thermostat 1 calls for heat and 2 calls for cool NCM-300

Last post by aaciii « Tue Feb 21, 2023 12:19 pm
Replies: 1
by Steven W. » Fri Dec 09, 2022 8:33 am

1 Replies

19595 Views

Last post by aaciii
Tue Feb 21, 2023 12:19 pm
UZC4 + 4 Nest Thermostats + 1 (New) Humidifier

Last post by Steven W. « Tue Feb 07, 2023 11:12 am
Replies: 1
by EKobres » Sat Feb 04, 2023 5:38 pm

1 Replies

17986 Views

Last post by Steven W.
Tue Feb 07, 2023 11:12 am
Trying to install thermostat - unable to locate type c in control board

Last post by niroshthanga « Wed Jan 11, 2023 6:28 am
Replies: 4
by niroshthanga » Tue Jan 10, 2023 9:53 am

4 Replies

30468 Views

Last post by niroshthanga
Wed Jan 11, 2023 6:28 am

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