Question about Honeywell CT3200 5-2 Day Electronic Programmable Thermostat Heater

1 Answer

Blower won't shut off on heat or cool cycles

Honeywell Ct 3200 thermostat and Heil #NUGK100DH3 condenser gas furnace. Both are about 18-20 years old. Blower will not shut off after a heating or cooling cycle. I disconnected the green (fan?) wire from the thermostat and the fan continued to run. Could this be the thermal switch up in the plenum? ... or something more sinister?

Thanks, Dave

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Honeywell Master
  • 2,033 Answers

Hi it souds like the afc is not working check the setings on it or clean the back of it /or replace

Posted on Feb 17, 2010

  • Rafael Martinez
    Rafael Martinez Apr 03, 2014

    What does afc stand for

×

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

Heil furnace blower motor stays on won't shut off at thermostat blows cold air continuously


Do you have t sat fan switch in on position??? If so blower will run continously set it to auto and it will cycle with heat call

Nov 12, 2012 | Heating & Cooling

1 Answer

I installed a honeywell CT87N thermostat. The


the burners light? if the burners dont light than it's working right the blower on the furnace comes on with the a\c

Jun 19, 2010 | Honeywell Electronic Programmable...

1 Answer

I have a heil heating and cooling unit.The fan is not working but it is still heating ,just not like it did.


Try turning your thermostat from fan auto to fan manual, if the blower starts then you have a burned out speed on the heat leg.

If this is true, shut power off to furnace and try and trace out the blower motor wires. Usually they will
gto to a terminal block that is marked heat/cool.
Just reverse the connections

Feb 08, 2010 | Heating & Cooling

1 Answer

I Have a honeywell RTH2410 Thermostat I wired it without the blue wire which used to go to X on my old thermostat. Now it comes on with aux heat all the time and I have a Heat Pump. How can I fix this?


What was the old thermostat labels and the wire colors that went to them?
The typical heatpump wiring Terminals are:
R = Red = Hot side of Transformer
C-B-X = Common side of transformer Depending on brand of heatpump
Y = Yellow = Cooling Contactor
G = Green = Furnace Blower
O = Orange Reversing Valve Energize to Cool
B = Blue Reversing Energise to Heat Depending on brand of heatpump.
W2 = White = Auxiliary Heat
You need to be sure where each wire comes from when you connect them to the new thermostat.
The best way to do that is to go to the furnace and see where they are connected. R-Y-G are probably correct, you need to see where the Blue wire comes from and determine what the X terminal was on the old thermostat.

Dec 29, 2009 | Honeywell Electronic Programmable...

1 Answer

RHEEM OIL FURNACE MODEL ROBD 067 LBEA BLOWER


You will likely need to install an isolation relay in the W circuit from the thermostat. Some thermostats rob a small current through the W circuit to power the thermostat. This small current can be enough to start the fan circuit timer. You can test this by disconnecting W at the furnace and allowing the timer to shut down. If the fan shuts off with the W disconnected you can install a simple relay.

The relay coil will be connected to Common on one side and the W from the thermostat to the other. Then you will run a wire from R on the furnace to the relay and from the N.O. Contacts to the W terminal on the furnace. This will kill that signal that is starting the timer and the W can steal it's power through the coil back to common.


Dec 23, 2009 | Honeywell Electronic Programmable...

2 Answers

Gas furnace is constantly blowing cold air


An indoor blower running when it is not supposed to usually indicates an overheat condition. I would guess that it has been cycling on and off for some time and finally caused the high limit to stick and not auto reset. if you tap it sometimes they reset. the real problem is that it has been overheating from lack of airflow, over sized unit, not enough return air, too many closed registers, dirty filter, dirty squirrel cage blower and or air conditioner a-coil. If you get it started again sit and watch the unit run the flames should come on and stay on for the entire heating cycle, not going on and off.
I wish I could help you more but it is difficult without seeing the problem myself. Good luck! this should get you started!

Nov 01, 2009 | Heating & Cooling

1 Answer

Have gas furnace and this winter,began having


The Thermostat Wizard is an interactive tool that will guide you through wiring and troubleshooting your thermostat, as well as programming it to the most comfortable settings for you and your family. Simply answer the questions from the Thermostat Wizard to correctly connect, troubleshoot and/or program your Honeywell Thermostat. You can even print the instructions and bring them right to the thermostat to help make things easier.
Go to: http://yourhome.honeywell.com/Consumer/Cultures/en-US/Support/Thermostat+Wizard/

However - the problem is probably not with your thermostat but with your furnace. It is most likely a dirty flame sensor - a maintenance issue. If you have not had your furnace serviced recently (more than 1 year) that is where you should start. Modern furnaces require regular maintenance.


Please rate my answer!

Feb 28, 2009 | Honeywell Electronic Programmable...

1 Answer

Furnace shutting on and off every four to five minutes all day


Have you had furnace cleaned? Have you changed filter or took filter out and try heater? Have you checked return grill to make sure you don't have anything in front of it. Return grill or duct could be blocked or two small. Blower motor could be going off on thermal overload. Does the heater do the same thing when it is 20 degrees outside. The other thing it could be is furnace is not big enough.
Good luck let me know what you find out

Jan 17, 2009 | Honeywell Electronic Programmable...

1 Answer

Furnace will not heat.


Most of the Lennox G-16s that I have repaired were having problems with the gray Penn-Johnson Piggyback igniton control module.
This is best repaired by replacing the spark module. Sometimes it may be neccesary to replace the gas valve also. Lennox updated to a ROBERTSHAW ignition system. Honeywell can also be used.
Also check that there is no water in the pressure switch or tube.
Hope this helps.
Matt
machtcl1@verizon.net

Jan 13, 2009 | Honeywell Electronic Programmable...

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

503 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

2028 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...