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

1 Answer

Honeywell T882 Chronotherm Clock Thermostat needs replacement

What replacement thermostat by Honeywell will work. Four wires - two from transformer by electric box to thermostat then two wires from thermostat to furnance. Can't seem to find one to fit<

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 308 Answers

The two wires from the transformer are to run the clock in the old thermostat. If you connect the two other wires to any heating thermostat, it will work. Don't forget to disconnect the transformer wires. Hope this helps

Posted on Jul 09, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Replacing chronotherm with new rth7600


R= power in G= fan Y= cooling W=heat O= heatpump reversing valve C= common used for clock on chronotherm Usually its pretty streight forward wire for wire. Unless you have a heatpump. The thermostat has to be heatpump compatable. And I ll usually use the 8000 for this. The w and y jumper may not be necesary on the new thermostat as the new one should do it internally once programed as a heatpump thremostat. At least thats how the 5000 and 8000 sreies work. So imagine the 7000 would be the same. You may also have to program the reversing valve operation not all manufactuers do it the same . Some valves have to be powered for heat while others have to be powered for cooling. Good luck

Jun 16, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

We have a chronotherm heating system written in dutch and we need to reset it because it turns on during the day and we cant turn the termperature down


Chronotherm was a Honeywell thermostat from the 70s-80s. Better off going to home depot and replacing it. Wiring is not that hard, they give you labels for the wires. It is low voltage and will not sting you, but turn off heating unit first to avoid shorting out transformer.

Sep 08, 2011 | Heating & Cooling

2 Answers

I have a very old manual Chronotherm thermostat.


No. The clock is just the set back timer. Pull the battery and use the stat manually.

Jan 26, 2010 | Honeywell Electronic Programmable...

1 Answer

Old analog chronotherm - clock broken


Unfortunately, no. These clocks fail frequently.

Jan 12, 2010 | Honeywell Heating & Cooling

1 Answer

I have a Honeywell Chronotherm III Thermostat and in instead of showing the temparature in the display it shows -AC. I've replaced the batteries, and tryied adjusting Temp up and down for cooling and...


It would appear to me that you have lost the 24 volt power supply to the thermostat. In referencing the manuals for this thermostat, available @ www.honeywell.com, I've found that when the thermostat is not connected to the wall plate (plate mounted on the wall, that the thermostat either snaps or screws into), it will display the -AC. This being said, either the thermostat is loose on the wall currently, or your 24 volt transformer has died. Hope this helps.

Dec 23, 2009 | Honeywell Power Humidifier: Furnace...

1 Answer

Hi , I am having a T882 and would like to replace it with a new RTH 2510 thermostat. There are currently two clock wires coming from the transformer which I will not use. The other two are connected in the...


Hi,
Yes, you should be fine by just connecting to the R and W terminals. The wire to the R should be the one coming from the R on the furnace or air handler.
Make sure that you nut off the other two wires good so that you don't short out the transformer.
It is a good idea to disconnect power before moving any of the wires to make sure you don't accidentally short them out.

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Dec 06, 2009 | Honeywell Electronic Programmable...

1 Answer

AC, Fan-Auto, Fan-On... nothing works. the request from the Thermostat doesn't engage anything. Thermostat Dispay works. How do I know if it is getting the 24volts from the relay? I presume the display...


Open the air handler. Locate the low voltage transformer. One side is 220 volts input. The other is 24 volts output. Take your VOM and touch the test leads to the input to verify 220v in. Then touch the other 2 leads to verify 24v out.
If you have power in and no power out, replace the lv transformer.

Jul 08, 2009 | Honeywell Heating & Cooling

1 Answer

Updating old honeywell thermostat with a new honeywell thermostat


check in the unit heater to see what is hooked up most only need to have red from transformer white to call for heat and green to make the fan run in man and somtimes common usually blue or black

May 09, 2009 | Honeywell Programmable Thermostat Heater

3 Answers

Replacing aging erratic honeywell chronotherm III


Hi, your replacement part can be purchased on amazon, take a look here: Amazon com honeywell chronotherm III thermostat. I hope this was helpful. Cheers

Nov 30, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell Chronotherm IV Plus requires frequent resetting.


Check to see if you have wires going to a C/C1 terminal. The older chronotherms used a transformer to supply 24 volts to power the clock. If in fact you do have these terminals, then I would suggest checking the output voltage on the transformer, (secondary (24v)side) to ensure it isn't close to dead. Hope this helps

Nov 28, 2008 | Honeywell Programmable Thermostat Heater

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

Related Topics:

987 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

2046 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...