Question about Honeywell Programmable Thermostat Heater

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Can I swap a Honeywell L641A1005 cylinder thermostat for a L641A1039 stat

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

rickzilla
  • 706 Answers

SOURCE: wiring honeywell digital stat

Hello davem1952,
The way you wire it will depend on how the other end of your three wires are wired into your heating system. This link http://www51.honeywell.com/pacific/common/documents/DT200_Specifications.pdf
shows the various methods for wiring it and take into account the type of setup you are dealing with. You'll need to find the wiring detail ( last page) that corresponds to your setup..
Hope this helps..
Reagrds,
Rick

Posted on Dec 13, 2008

lasvegasrich
  • 65 Answers

SOURCE: Looking for user's manual for older Honeywell

go to this link and put in your info

http://safemanuals.com

richie

Posted on Nov 05, 2009

  • 1 Answer

SOURCE: Is it possible to change the thermostat L641a1005

Yes this can be removed without draining anything. It only mounts on the surface of the hot cylinder tank.

Posted on Nov 16, 2009

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How to adjust thermostat


How to Adjust Honeywell T6360b1028 Thermostat? ' DIYnot Forums

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Manual Honeywell How to Find Honeywell Manuals
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Honeywell thermostat manual


The model number is going to be on the thermostat. It is not unusual for the number to be on the back of the stat, meaning you may have to take it off the wall. It could also be found betweenthe base ans the stat.

Once you have the model number googel "Honeywell XXX" with XXX being the stat model number. If you can't find the stat, you can go to the Honeywell web site and do a search, matching your stat, by the pictures and functions. It is a bit tedious, but it works.

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Cannot get central heating working,for honeywell ST6400 programme


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it is always advisable to shut down the main swith to avoid further issues in replacing thermostat, if you follow the right color coding this should be no prob, unless otherwise it cannot detect the right temp then it will not stop until it reaches and senses the right temp.

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