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

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What do the batteries in the thermostat do? The gas heater does not come on. Could the reason be the batteries in the electronic thermostat?

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Yes, in some stats bats are just for back up, in others they actually run the stat

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Hi,

Without Batteries, they would not work.

Bingo!! It might be one of the reasons.Change the battery and see if that would fix the issue.

If problem persists, let me know.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Sep 28, 2009

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1 Answer

System wont ignite. chgd filter & batteries in thermostat


Does the igniter get hot? If it does, then there is a problem with the gas control, that is, the gas won't come on for some reason. Generally, the gas won't come on if the igniter fails (for safety reasons), so are you sure there is gas flowing? You would hear the cycle start, that is the lighter, and even air flow, but if the gas doesn't come on during that time, the system shuts down in a few seconds.

Nov 30, 2015 | Heating & Cooling

1 Answer

Thermostat changed to Celsius without out us changing it. We have had this thermostat for several years without any problems. Reviewed the manual and checked to see if the original install was set...


Check the dip switch (3) it should be in the on position...It may have moved when you mounted the thermostat on the base. Also check batteries you are using...long life alkaline only.

Feb 25, 2015 | Honeywell CT3200 5-2 Day Electronic...

1 Answer

The pilot will light but as soon as the button is released is goes out


1) If water heater has electronic gas control thermostat, then the gas control needs to be tested and possibly replaced. Add a comment and describe electronic gas control.

2) If water heater has non-electronic gas control thermostats, problem sounds like the thermocouple. Problem could also be bad gas control.
Make sure end of thermocouple sits in the pilot flame.
http://www.youtube.com/watch?v=v0aBPsNg6vo

Buy thermocouple at local hardware. They vary by length, for example 18".
Thermocouple screws into bottom of gas control thermostat.
Finger tight plus 1/4 turn. No pipe joint compound or teflon tape on threads.
http://waterheatertimer.org/images/IMG_9146-gas-control-thermo.jpg

Heat from pilot flame travels to gas control thermostat.
Heat is changed into small electric current using a thermistor.
The small current tells gas control that pilot flame is ON, and so gas control keeps gas flowing.
If thermocouple is not working, or has fallen away from pilot flame, the gas control turns off gas to pilot.
This safety device is necessary so gas does not fill up house and cause explosion.

http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

Aug 22, 2011 | Water Heaters

1 Answer

I have atwood GC6aa-9e, will not fire the ignition tries 3 sets


Have you tried temporarily removing the thermal cut-out from the circuit to see if ignites then? It's the little resistor looking thing inside the plastic sleeve/cover that runs to thermostat. Disconnect it from the thermostat terminal, and from wire that is on the other end, and you should be left with a female spade connector at end of that wire. Connect that directly to thermostat terminal where the other part was connected, and try it. If it works, the thermal cut out is no good and needs to be replaced for safety reasons, in case of flame out of control, it blows and shuts gas valve off.

Jun 06, 2010 | RTO Atwood DSI-RV Water Heater-6 Gallon

1 Answer

I have a honeywell t stat th6000 for htg only having problem get my gas valve to go onfurnace is working but no heat


As long as this is a 24 volt thermostat, remove the thermostat from the sub base and connect the wires that are connected to terminals R & W. If the furnace works the problem is in the thermostat. Have you tried new batteries

Oct 29, 2009 | Honeywell Electronic Programmable...

1 Answer

I have Honeywell thermostat for gas heater. change new bateries..heat is on up to 80F. Underneath 80F show the picture of "gas" sign..and the heater did not turn on.. What can I do? what's wrong? Please...


Check to see if the gas is on.
Check to see if the pilot is on.
You could have thermocoupler problems if the pilot dosn't stay on, or the safety thermostat within the body of the heater may have tripped.

Jun 12, 2009 | Honeywell Electronic Programmable...

1 Answer

Replacing analog thermostat with digital


alot of those gas fireplaces work on what is called powerpyle or 750 mv if your old thermastat has a ts in model then you would need tstat that works with millivolt systems

May 04, 2009 | Honeywell Electronic Programmable...

2 Answers

My furnace wont start from the thermomstat.i have to push in start button on the panel to kick on.. i have my temp set at 70.. i changed the batteries on thermostat.. but every other day i have to go down...


I would say that the thermostat needs replaced! (this is the most common problem with the honeywell brand!
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Jan 13, 2009 | Honeywell Electronic Programmable...

1 Answer

Nat gas wall heater wont come on during nite


Definatly sounds like a bad ground circuit IReplace thermostat you want it to be reliable

Dec 21, 2008 | Heating & Cooling

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