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

1 Answer

RTH2520 Thermostat backlight

Backlight on our thermostat stopped working. I think that everything else works fine. Is there anything that I could do my self to get it to work again? I got this unit at Costco in November 2008 and installed it my self.

Thanks!

John

Posted by on

  • Anonymous Mar 29, 2014

    Doesn't work long

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 82 Answers

Some thermostats have batteries i have found that they sometimes have enough power to operate t-stat but not back light. usually AA batteries other than that it is more than likely a problem that can not be repaired

Posted on Jan 05, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My totaline thermostat model #p474-0100-a the backlight is staying on and when the furance is running after only a couple of minutes it shuts off and my furance shuts down .


Multiple issues that are not related. If the pilot light goes out then the thermocouple might be bad. If the pilot ignites the gas and everything shuts off, it sounds like the over temperature sensors are detecting heat in excess of what is allowed in the firebox. The thermostat issue has nothing to do with this.

Nov 19, 2014 | Heaters

1 Answer

I have williams model 5009622 , my furnuce come on not stop , i think thermostat bad , i changed the new one but not kick on , i conect 2 wires then it kick on , you think that may be bad thermopile is...


Make sure to purchase a thermostat that will operate on a millivolt system the old Honeywell t-87 would work but the new T-87 replacement ones do not work. make sure the wires are not touching each other at the connection points. Hope this helps.

Jul 04, 2014 | Williams (5009622) Ceramic Gas Wall...

1 Answer

How do I connect two baseboard heaters to a programmable thermostat?


You have switched 2 of the wires, reverse them.. If you had it working once, then it will work again

Apr 12, 2013 | Honeywell Heaters

1 Answer

My heater just stop working, no power, no lights. I checked the fuse. Fuse is fine im sure


I have the TCH7090ER and last night everything went out except the red light... nothing else works. Have you figured anything out?

Oct 31, 2012 | DeLonghi Heaters

1 Answer

The backlight is not working on my newly installed Honeywell RTH2310 thermostat.


Hello.The thermostat needs a COMMON wire.The letter C on the back of the thermostat.In the unit it runs there is a COMMON connection for that reason.I hope there is a spare wire strand to use because a lot of thermostats don't need a common to work (uses battery)but honeywell does.

Oct 31, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

How do you turn off the back light on the honeywell 7 day thermostat


go in to the users set up and look for backlight change the setting or the time on

Apr 09, 2010 | Honeywell Electronic Programmable...

1 Answer

TRD 1230 ER ITS STOPPED WORKING.. ANY IDEAS,


If it has a manual control,not digital,remove the control panel,and remove the thermostat,and use a finger nail file,and file the contacts in the thermostat,the points,contact points.This is about all you can do,if it is anything else,throw it away,and buy a new one,the parts are as high as a new heater.If it is a digital control,throw it away period,cost to much to repair.

Jan 15, 2010 | DeLonghi TRD0715T Oil Filled Radiator...

1 Answer

Relatively new wall furnace suddenly stopped working.


if you are by passing stat at the gas valve and it is still not working,i would assume a bad control valve.

Jan 13, 2010 | Heaters

1 Answer

No digital readout on home thermostat. No backlight either.


Turn the Furnace off, Disconnect the R and W thermostat wire from the control board located usually in lower compartment of furnace, the blower
is usually mounted behind it.

Make sure the 2 wires you disconnect are going to
R(usually power) and W(usually Heat) other terminal
markings are y(for cool) g(for fan). After Disconnecting the R and W wires Turn the furnace
back on. You will probably have to hold a door switch
in to complete the circuit. If everything is correct the
furnace should not run.

This is more than likely that you have the R and W
wires touching eachother and you need to get them seperated.

Jan 05, 2010 | Heaters

Not finding what you are looking for?
Heaters Logo

404 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heaters Experts

Sean

Level 2 Expert

77 Answers

Gareth Cockram
Gareth Cockram

Level 3 Expert

657 Answers

yadayada
yadayada

Level 3 Expert

61249 Answers

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

Answer questions

Manuals & User Guides

Loading...