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Honeywell stc6400c just want hot water on but heating comes on as well

I just want the hot water on for honeywell stc 6400c but heating comes on as well when I set programm

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Posted on Jan 02, 2017

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SOURCE: Honeywell smarfit set to OFF but radiators go on

have you got a motorised valve problem

Posted on Aug 17, 2009

  • 2458 Answers

SOURCE: Honeywell ST6400C programmer

Hi yes sound like it not working on hot water only it would check ou the wiring on this side

Posted on Feb 18, 2010

  • 587 Answers

SOURCE: Hi I have a Honeywell st699 programmer for central

HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions
If you can’t find what you want, the bottom left and bottom of web
Page, they have homeowners assistance and Home products to get the help you need.

Posted on Aug 18, 2010

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SOURCE: My Honeywell ST 6400C won't heat the hot water the

it sounds like the motor in the motorised valve is not working on some models you can just change the head /motor , check cylinderstat (hot water stat) is working

Posted on Dec 14, 2010

  • 742 Answers

SOURCE: Because the display unit won't light up I haven't got any hot water or heating can someone help

Replace

Posted on Jun 29, 2014

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1 Answer

How do I fix central heating


The first thing you need to substantiate is the fact that there is enough water in the system. It will be a closed loop system requiring approximately 10 psi/ floor. (Only a rule of thumb). Usually when one protion of the system works and the other does not, it is an issue of water quantity available to circulate through the combination of loops. If you have to add water, you will probably have to purge air from the highest points in the system. Even if there is an "Airtrol" fitted in the bottom of the expansion tank, bleeding the high points will eliminate air quicker.

The hot water portion of the loop should only be going through a heat exchanger that transfers the loop temp to the domestic water circuit and the three way valve is probably a 'mixing valve' utilized to maintain a certain loop temperature on the primary loop.

Dec 01, 2014 | Honeywell Heating & Cooling

1 Answer

Heating and hot worker work separately but not together


If this a honeywell valve you may need to change the motor in side the valve , sounds like its lost some of it power to move the inside of the valve to y postion .

Nov 04, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

How do I set my thermostat so that it doesn't keep going off and leaving me with no hot water .I have a Honeywell digital thermostat.


The problem is not your thermostat. It is the person who told you that your AC would be your sole source of hot water. The purpose of heat recovery is to ASSIST with hot water production and reduce the current used by your water heater. The only time your AC heats your water is when it is working to cool (or if it's a heat pump, cool and heat) your home. Turn your water heater back on and let your AC help keep the water hot. It's not supposed to do it alone.

Mar 19, 2011 | Honeywell Heating & Cooling

1 Answer

My Honeywell ST 6400C won't heat the hot water the light comes on but pump doesn't run or boiler fire. But does work on C/Heating.I can get hot water only by running the C/H and manually opening the hot...


it sounds like the motor in the motorised valve is not working on some models you can just change the head /motor , check cylinderstat (hot water stat) is working

Dec 14, 2010 | Honeywell Heating & Cooling

1 Answer

MY APARTMENT HAS ELECTRIC WATER BASEBOARD HEATING SYSTEM, I found out the heat cannot be turned off even I disconnect the honeywell thermostats (only one on the wall for the whole unit - living room and 2...


Okay couple questions here because either you have hot water baseboards or you have electric baseboard heaters.
- if the system is a hydronic baseboard heater fed form main boiler, usually this means your space heat is controlled by a zone valve which the zone valve is controlled by your thermostat.
-if you find the zone is controlled by a zone valve than it is possible the zone valve is defective causing hot water to bleed past the zone valve even though your t-stat is telling it to close.
- first find out what excatly the baseboard is heated by either water or electricity
-next personal message me and I can walk you through it

May 29, 2017 | Honeywell Heating & Cooling

1 Answer

CM67ng will not turn heating off


Are you running some type of program on the tstat??

Jul 06, 2017 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell ST6400C - hot water not working


some digital thermostats do no not work with zone valves is this a new thermostat that you had installed

May 08, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Hot Water is not comming


REPLACE THE CIRCULATOR PUMP ON THE SYSTEM.IT IS NOT PUMPING THE WATER.

Mar 01, 2009 | Honeywell Programmable Thermostat Heater

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