Question about Heating & Cooling

1 Answer

Carrier electric furnace (air handler) stopped running

My Carrier KFCEH3101C15 air handler/electric furnace stopped working yesterday. It is a 2006 unit but it had been running very smoothly/quietly. I noticed the metal air filters were very dirty so I blew them out and replaced them. I tried to reset the system by turning the thermostat below the air temperature reading then turning off the two circuit breakers on the unit for a minute, turning them back on, then setting the thermostat to about 5 degrees above the air temperature reading. The thermostat then read "Aux Heat" as if it was trying to raise the temp in the house but the air handler never kicked on. I turned the fan switch from auto to "ON" but the fan motor did not work. It appears there is no power to the air handler/furnace. I took the access panel off and exposed the blower motor and a-coil and the blower motor felt warm to the touch. The unit has not worked for 24 hours, so either it is retaining heat or it is getting juice but not working. I can't see an obvious reset button anywhere...does anyone know what might be wrong? Could it have overheated because of the dirty air filters, and if so, why won't it reset or how can I troubleshoot and get it running again? I see a lot of wiring and a circuit board inside of the box but no reset buttons or sliders and no fuses to check except a 5amp fuse on the circuit board that looks like a fuse you would put into the panel of a car. Please help--thanks!

Posted by on


1 Answer

The 5 amp fuse may be bad, they go quite often, and they are exactly the same as the car ones. Check the fuse with a meter. If its OK turn the unit on and check for voltage going to the blower fan. You should get a reading between at least one pair of wires. The unit should have a schematic on it somewhere, check it to see which wire pairs are used for the variable speeds of the fan.

Posted on Nov 09, 2014

Testimonial: "Hi Petronius, thanks for your reply. The 5amp fuse is good and the blower motor is powered. Any other thoughts? I checked all 3 temp limit switches with an ohmeter and they all ohmed out at 0.00. They are HH19ZA950 switches (the clicker type). Even if they were bad, that wouldn't keep the blower from running, or would it?"

  • Dave Strasinger
    Dave Strasinger Nov 12, 2014

    hanks for your reply, Petronius. The 5amp fuse is good and the blower motor has power running to it (it is humming lightly). Any other thoughts? I checked all 3 temp limit switches with an ohmeter and they all ohmed out at 0.00. They are HH19ZA950 switches (the clicker type). Even if they were bad, that wouldn't keep the blower from running, or would it?. How should I test the run capacitor and blower motor? I only have a basic multimeter that can test ohms, DC amps, and voltage. The capacitor is just a standard run type with two posts on top, 4 leads per post. Since I don't have an "MFD" setting on my basic multimeter, to which setting should I set it? For the blower, there are no less than 8-9 wires...not sure where to start.



3 Suggested Answers

  • 2 Answers

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

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.
Good luck!

Posted on Jan 02, 2017

  • 700 Answers

SOURCE: My outdoor heat will not

you need to go oside and look for a red reset button on the unit. you tripped the high ressure switch when you let your filter get that dirty. go check on this and when your done if it still is not working then ask me more.

Posted on Jan 25, 2009

  • 10 Answers

SOURCE: approx 2 years old. quit working during recent

it sounds like the contactor is not pulling in . corrision maybe even a bug could prevent it from pulling.

Posted on Nov 22, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

Stopped heating runs, but no heat... any parts available? Pretty sure is 120v ac.

Furnace Troubleshooting & Repairs ' HomeTips
Nov 25, 2015 - If your heater doesn't heat or works poorly, this furnace repair guide will help you troubleshoot and fix typical furnace problems with step-by-step advice. ... If your furnace's motor runs but the blower doesn't move air, the belt that ..... a tune upbut couldn't really find any thing wrong . last night and today when ...

Furnace Not Blowing Air? A Furnace Troubleshooting Guide
Dec 1, 2014 - A furnace works by a very simple principle, it uses some type of fuel ...This series of heated coils (called a heat exchanger) has a fan ... Today we will address the most common causes of a furnace not blowing air, and what you can do tofix it. ... It seems like this would be a no-brainer, but I can't tell you how ...

Simple Furnace Fixes ' The Family Handyman

Jan 01, 2016 | Heating & Cooling

1 Answer

Replace a kfceh3101c15 with a 20 kw. 15 kw just is not keeping up in this weather

The best answer would come from Carrier. Here is their contact info-

Feb 23, 2015 | Carrier Heating & Cooling

1 Answer

Electric Furnace stopped running

You have one of two problems. Either the capacitor for the motor has failed or the motor has failed. I would turn off the power to the unit and see if you can locate the capacitor and remove it. An ac supply or electrical supply house can match up the capacitor. This is relatively inexpensive. Otherwise you will need a new motor.

Nov 11, 2014 | Heating & Cooling

1 Answer

Carrier electric furnace/air handler stopped running

Check fuses first! If yours is the model with a fuse box you will see a flap that pulls down to reveal a block of fuses, the blade fuse you described is part of it too! Are all fuses ok?

Nov 08, 2014 | Heating & Cooling

1 Answer

Carrier air handler/furnace won't turn on

from what your saying the motor is hot to touch if that is the case the motor is bad need to be replaced.

Nov 08, 2014 | Heating & Cooling

1 Answer

Carrier 58MVC100 furnace no power. Tree fell on main power line and after power restored noting going on with furnace/air handler. LED is not lit. 3amp fuse appears to be good and there is a sulphur smell...

Possible that when power got restored you furnace might have gotten surged. replace fuse any way to be sure. Check break box for trip circuit. Call a tech from there man.

Aug 08, 2013 | Carrier Infinity 58mvc080 Gas Furnace 80k...

1 Answer

Furnace switches to auxiliary heat while in cool

It's likely a bad tstat. Turn the power off to your air handler. Remove red , green, yellow and orange wires inside the tstat and wire nut them together. Not sure if your reversing valve energizes in heating or cooling but, turn the power back on. If the unit is heating turn the power off and remove just the orange wire and turn power back on. Let this run and see if it you are ONLY getting cool air ALL the time. If so you have a bad stat. If still getting heat possibly you have a bad control board in the air handler. Good Luck!!

Apr 15, 2017 | Honeywell Heating & Cooling

2 Answers

I have Carrier 38TKB036 3 ton A/C condensing unit and one 28CCA036 3 ton A-coil to provide A/C to home thru existing furnice. A/C was on and stopped working. Turned off/on, but will not come on. Any...

Is the furnace fan (indoor fan ) running. If not the problem is with the inside unit. It supplies the control power to operate the entire system and has a control fuse on the circuit board. If it is running but not the outside unit then the problem is outside.

Aug 08, 2011 | Carrier 38CKC042 Air Conditioner

3 Answers

3 amp fuse blows on a carrier 58mcb furnace board

Hi!!! Does your ac unit work fine?If not check your low voltage problem..You have a low voltage problem check the wire going out to your condensor make sure that they are not touching..Good luck..Check low voltage wires..short in progress..

Jan 04, 2009 | Carrier 52CQ-312-4 Comfort Series Heat...

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

Related Topics:

130 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3253 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides