Question about Carrier 38CKC042 Air Conditioner

1 Answer

Furnace keeps turning on and off

The burner keeps on and off with electronic ignitter

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Okay, what is going on. is the system lighting or not. If it is just sparking then you need to just the gas value. But if the system lites and then only have a flame for about five sec. then shuts back off, then your flame sensor is dirty. Take a wire brush and clean the flame sensor. The flame sensor is right there with the burns because a flame has to hit it for the gas to stay running. Just take a wire bush and clean it..... let me know

Posted on Jan 17, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

The furnace will kick on and the burners will keep going out the process will continue unless i shut the power to the furnace off for five minutes then cut it back onit will run good but the problem will...


check your air filter, a very dirty filter will cause the unit to over heat "180'" The burners turn off the unit cools itself with the blower and then relights.

Jan 24, 2011 | Goodman Air Conditioners

1 Answer

I have an Evcon hot surface ignition furnace and can not get the heat to come on .I set my thermostat on desired temp and starts running,but the blower wont come on,on auto I have to switch to the on...


Troubleshooting and Repair
Furnaces with electronic ignition systems may be much more efficient than their early counterparts, but they do it largely through electronics. However, there are still some troubleshooting you can do but fixing the problems can involve replacement of parts more so than repair or adjustment. PROBLEM: Furnace burner will not ignite
Possible Solution
  • With a Hot Surface Ignition (HSI) system, if a gas hissing sound is heard for about 7-10 seconds and the burners do not ignite, the furnace will go into lockout mode.
  • To reset turn the furnace power switch off and back on and try again. The switch is probably located on the side of the furnace. A reset button may also be found on the solid state controller. If resetting fails again, proceed as follows.
  • Turn off power and gas to the furnace
  • Remove and check hot surface igniter being careful not to touch the heat element. If it is cracked or damaged, replace the igniter.
      PROBLEM: Furnace comes on for 7-10 seconds then turns off Possible Solution:
      • Turn off power and gas to the furnace
      • Remove flame sensor from its bracket. Lightly clean the surface with fine emery cloth and replace.
      • The problem may also lie in a bad ground or the the black and white wires being reversed (reversed polarity) at the junction box or outlet powering the furnace.
      • The electronic ignition control module must ensure current flow through the flame sensor to ground and if the polarity is reversed in the circuit there is no voltage potential and the flame sensor does not work and closes the gas valve.
      • If the black and white wires are connected correctly and the flame still drops out, then the issue may be a bad ground. Using a volt-ohm meter, measure between the white wire and the ground wire to be sure you have no voltage.

Nov 01, 2010 | Air Conditioners

1 Answer

Can you tell me the order in which each componet of a gas furnace comes on to start the furance?


Yes there is a sequence:
0:00 Dial for fan/limit switch is at 70 deg position. Furnace is cold. I turn T-stat to 80 deg to start furnace.
1:00 Burner comes on and dial begins to move slowly up.
2:30 Dial at 140 deg and fan motor comes on. Dial never goes above 150 deg.
3:00 Burner turns off. Dial slowly moves back towards 90 deg.
4:45 Burner turns on and dial is at 110 deg.
4:50 Fan turns off with dial still at 110 deg.
5:30 Burner off. Dial at 120 deg.
6:15 Fan on. Dial at 140 deg. Burner is still off.
7:00 Burner on. Dial at 120 deg.
7:40 Burner off. Dial still at 120 deg.
8:30 Fan off with dial at 110 deg., and it quickly snaps back to the 80 deg. position.
8:30 plus, cycle continues.....

Mar 25, 2010 | Air Conditioners

1 Answer

When furnace turns on all the burners but the


It sounds like the last 2 burner pilot cross lighters are either dirty with rust or they are out of alignment.You need to remove the burners then wire brush the ends of the burners and cross lighters and make sure the burners are level with each other. Hope this solves your problem!!

Nov 11, 2009 | Weather King 10AJA4201AH Air Conditioner

2 Answers

One of my furnace's burners will not completely ignite


Take the orfice out and clean it sounds like something in it

Dec 06, 2008 | Air Conditioners

1 Answer

Intertherm gas furnace


Need more info. Are you saying that when tstat calls for heat then it short cycles. But if you turn it off then back on it runs ok?

Mar 21, 2008 | Air Conditioners

4 Answers

Carrier weathermaker sx 58 furnace


I have serviced these furnaces for 20 years and I can tell you most of these models did not have diagnostic lite on them. (although some did, especially if the control board has been replaced) The problem is most likely a bad 3 wire pilot. This will cause exactly what you describe. 2 things to consider though. 1, If you were to replace the pilot don't get a cheaper knockoff. In my experience these do not last long at all. Get the right one from a carrier dealer. It will cost more but be much more reliable. 2 What is the condition of the secondary heat exchanger? Most if not all of the sx series had issues with the secondary heat exchangers rotting out and leaking. If the furnace is out of warranty you would be much better replacing the furnace as the cost of replacing the secondary heat exchanger will probably be almost the same as a new furnace. ( those babies are EXPENSIVE!)

Dec 17, 2007 | Air Conditioners

Not finding what you are looking for?
Carrier 38CKC042 Air Conditioner Logo

Related Topics:

321 people viewed this question

Ask a Question

Usually answered in minutes!

Top Carrier Air Conditioners Experts

Cindy Wells

Level 3 Expert

4753 Answers

yadayada
yadayada

Level 3 Expert

60667 Answers

Lawrence Oravetz

Level 3 Expert

7565 Answers

Are you a Carrier Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...