Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Can I upgrade my honeywell st699 programmer to a ST9400C

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It should be a direct replacement

Posted on Oct 05, 2009

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SOURCE: can I upgrade my honeywell st699 programmer to a

Yes.

Posted on Oct 07, 2009

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1 Answer

Our heating and hot water keeps turning off


Sounds like a glitche in the thermostat. First, override the program & see if it does the same thing over the next few days.

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Can you replace a danfoss TP9 with a honeywell ST699


I believe the TP9 is a programmable thermostat.

While it appears the ST699 is a timer that connects to a thermostat.

So yes, they both control 230Volt boiler-and-pump. But there are differences.
Google search each item and include .pdf in search parameter to find product manual for each, and then compare wiring differences.

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Replacing an ST699 with a ST9400C following repl wiring diagram, but programmer does not come on. Is the diagram incorrect? Wiring colours do not follow any of the plans. Syst has room stat, cyl stat,...


Disregard wire colors. Instead wire by terminal designation. In other words :
Wire on "R" Terminal on old thermostat to "R" Terminal on new thermostat no matter the color.

Jun 14, 2011 | Honeywell Heating & Cooling

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How do i remove the cover of my honeywell st699 programmer


switch of the power; use a small screwdrive to press down carefully into the three small slots (two at the top, one at bottom left) to release the plastic clips while easing the front panel towards you.

Sep 06, 2010 | Honeywell Electronic Programmable...

1 Answer

Hi I have a Honeywell st699 programmer for central heating and hot water. The only problem that we have is that we can not change the time on the clock. This means that we cannot set any programmes. Is it...


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.

Aug 17, 2010 | Honeywell Programmable Thermostat Heater

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Cannot get central heating working,for honeywell ST6400 programme


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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.

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