Question about Honeywell Programmable Thermostat Heater

Open Question

Honeywell ST6400C Programmer + Drayton +RF Digistat

Hi,

I have recently had the above units fitted but the thermostat does not switch the heating on or off. After following the Drayton instructions i have found that the SRC unit does not fire the boiler when the stat calls for heat.The programmer works fine but i also require the use of the stat when the programmer is not in use.

Can you help?

Neil

Posted by on

  • Anonymous Mar 04, 2008

    my didistat thermostat is not fireing the boiler. now it has completely stopped heating at any time, but the boiler is haeating the water so is ok. What do i do

×

5 Suggested Answers

  • 2 Answers

SOURCE: No hot water honeywell st6400c

HW valve was stuck in the open posiion and the micro-switch was not working so thats why boiler and pump were not starting. Bled system to below the level of the valve to be changed, and replaced valve with a drayton ( easy quick change of valve head if needed no screws )

Posted on Sep 17, 2008

  • 17 Answers

SOURCE: replacing Honeywell heating progrmmer

yep the wires will hook up to the same designations, just write down what color was connected where. You will need to set the thermostat up for your particular situation...gas, electric, heat pump, ect. The installation maunel is very clear on this aspect so you should not have a problem.

Posted on Nov 14, 2008

  • 148 Answers

SOURCE: 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

Posted on May 10, 2009

james3751
  • 614 Answers

SOURCE: Honeywell Central Heating temperature control

R comonY cool W heat G fan C other side of 24 unless you are battery operated. On the back of the Tstat tou should have switch that says gas or electric this controls how the fan operates. If not go into programing and program 1 stage heat one stage cool.Let me know I will walk you thru this.

Posted on Nov 18, 2009

  • 2116 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

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have Honeywell st6400c. The heating runs all the time although I have switched off the programmer. I have just replaced the wired thermostat with a remote one. Could the wiring be incorrect


Start from scratch and do t hardest thing there is for any man to do......................STUDY the directions for the new components.
Sometimes it's THAT simple to correct a mistake. don-ohio (:^)

Jan 16, 2017 | Honeywell Heating & Cooling

1 Answer

How to programme rc2 british gas thermostat


The British Gas RC2 is a re-badged Drayton Digistat and I managed to find installation and operating manuals for that at www.gasapplianceguide.co.uk

Go to the section 'Lost your instructions' and look for Drayton 2F & 3F Digistats (earlier type) for a downloadable copy of the manuals.

Following them got my RC2 up and running though it was a bit fiddly at times.

Hope this helps.

Oct 27, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

ST6400C programmer, heating switched off. Switch hot water on only, tank full of hot water but pump runs and radiators get hot. Wall stat is set at zero. When programmer is touched and the flap dropped to...


Have had a lot of these programmers with this fault.Integral fault with electronics.Programmer will need to be replace as unrepairable.You should be able to find a straight replacement version from your heating supplier.

May 11, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

My st6400c Honeywell programmer blank. Mains turned of whole day. Now back on, but st6400c blank.


Have you tried pressing the 'Reset' button (with the tip of a pencil)? After doing this, you will have to re-enter the various times. It could be that your rechargeable battery is nearing the end of its useful life, by the way.
George

Feb 23, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell ST6400C central heating programmer fault


you may vae to enter a different "Mode" to change the time....also try removing the batteries for 10 minutes and then reprogram the thermostat again

Oct 25, 2009 | Honeywell Electronic Programmable...

2 Answers

User manual for Honeywell ST6400C


Honeywell ST6400C
Times set on thermostat does not turn on or off the heating or hot water at the set times, but any time of the day

Sep 17, 2009 | Honeywell Electronic Programmable...

2 Answers

Replacing Honeywell heating progrmmer


yep the wires will hook up to the same designations, just write down what color was connected where. You will need to set the thermostat up for your particular situation...gas, electric, heat pump, ect. The installation maunel is very clear on this aspect so you should not have a problem.

Oct 30, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

No hot water honeywell st6400c


HW valve was stuck in the open posiion and the micro-switch was not working so thats why boiler and pump were not starting. Bled system to below the level of the valve to be changed, and replaced valve with a drayton ( easy quick change of valve head if needed no screws )

Sep 07, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell ST6400C programmer


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

Jul 25, 2008 | Honeywell Programmable Thermostat Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

171 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

paulcarew

Level 3 Expert

2116 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

Are you a Honeywell Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...