EWC ST 2D zone one wont shut off until zone 2 does

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msrocks
Posts: 1
Joined: Thu Jun 06, 2019 6:38 pm

EWC ST 2D zone one wont shut off until zone 2 does

Post by msrocks »

Hi,

I have a EWC ST 2D controller and a Honeywell 50061478-004 thermostat our oil guy installed in the winter. Now with the AC running, the first floor-zone 1 will keep running until upstairs zone 2 shuts off. The first floor is set to 74, and at 70 degrees it is still running. I'm not sure if it is a bad thermostat or wired wrong. Do I need to replace thermostat with a TH4110d?
Paul Z.
Posts: 216
Joined: Thu Dec 08, 2011 3:05 pm

Re: EWC ST 2D zone one wont shut off until zone 2 does

Post by Paul Z. »

Call 1800 446 3110 X490 have a few questions
blundig
Posts: 1
Joined: Sun Sep 05, 2021 11:11 am

Re: EWC ST 2D zone one wont shut off until zone 2 does

Post by blundig »

Hi,
I have the exact same problem with my system
Did you get it fixed?
If so can you tell me what to do.

Thank You
skowyrtka
Posts: 4
Joined: Tue Aug 31, 2021 7:00 pm

Re: EWC ST 2D zone one wont shut off until zone 2 does

Post by skowyrtka »

blundig wrote: Sun Sep 05, 2021 11:16 am Hi,
I have the exact same problem with my system
Did you get it fixed?
If so can you tell me what to do.

Thank You
https://seriale.best/
Probably too hard to solve ;/
cdahdeu
Posts: 1
Joined: Mon Apr 17, 2023 1:48 pm

Re: EWC ST 2D zone one wont shut off until zone 2 does

Post by cdahdeu »

i have this same problem :(


________________________________
The best movie - John wick 4 cda
Steven W.
Posts: 111
Joined: Tue Jun 25, 2019 9:13 am

Re: EWC ST 2D zone one wont shut off until zone 2 does

Post by Steven W. »

PRO 1 Thermostats
T601-2 – None Programmable
T725 - Programmable

We no longer make the ST Boards do to the stats that work with the ST Boards are hard to find you may need to update your board to a NCM 300

Here is where you can get the stats or the NCM 300 from: www.supplyhouse.com
Steven R. Weisneck
Technical Engineer
Tel: (732) 446-3110 Ext. #461
www.ewccontrols.com
sweisneck@ewccontrols.com
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