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Problem: Please help me identify my gas furnace parts, functions and how they operate?

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Problems: We have these questions asked many times: Where are the various parts on my gas furnace located? Many of our potential customers ask where is the hot surface ignitor, gas valve, flame sensor, control board, draft inducer, limit, and rollouts on my gas furnace located? I can not find where this part is located? Where are the parts located and what function does each part perform? How does a gas furnace operate?

Answer: We have these questions asked a lot. Below we have a really good super great YouTube video where AC Service Tech LLC shows and explains where the gas furnace parts are located and what the functions are for each gas furnace part. This is an excellent gas furnace troubleshooting video! Thanks so very much to AC Service Tech LLC. for making this excellent educational and informative video!! The video shows where the following gas furnace parts are located: control board,  control board fuse, low voltage transformer, thermostat, blower door safety switch, blower motor, blower motor capacitor, inducer motor, inducer motor capacitor,  pressure switch, limit switch, rollout switches, hot surface ignitor, flame sensor, burners, and gas valve.  Please email us anytime if you have any questions: arnoldservice@gmail.com  We would love to help you out and earn your business! Steve & Barbara Arnold

You Can Search Our Site for More Troubleshooting Problems with Answers, Heating, Air Conditioning Parts and Supplies in the Google Search Box Below:

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How to Use a Multimeter to Troubleshoot HVAC Circuits

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Problem: In troubleshooting heating and air conditioning problems it is very important to know how to use a multimeter.  I remember when I did not know how to use a multimeter and I would use the trial and error method for testing circuits! If the circuit breaker blew then I had it wired wrong. If the breaker held I was right! This, of course, was very dangerous and I do not want anyone to use this trial and error method! The trial and error method is very scary, to say the least!  It is a wonder that I did not burn the house down or get hurt from electrical shock! Many people do not know how to use a multimeter and I wanted to list this post and video that shows how to use a multimeter! Of course,  as we all know electricity (the flow of electrons in a conductor) can not be seen. We need to know how to use a multimeter and we need a good multimeter to be able to troubleshoot, find, and fix HVAC, automobile, and home electrical problems. 

Solution: Learn how to properly use a multimeter to troubleshoot heating and air conditioning equipment. We have a really good YouTube video made by Word of Advice TV that explains how to use a multimeter in detail. The Word of Advice Video explains what the multimeter is capable of doing and then shows how each of the functions of the multimeter is used in troubleshooting and testing a furnace. The video shows how to check resistance, voltage, continuity, capacitors, batteries micro-amps, and more! Thanks so very much to Word of Advice TV for making this excellent educational video!  We sell the same G2 Phoenix Pro multimeter that is used and shown in the video below on the following page: Please click here if you are interested in the Phoenix Pro Multimeter that we sell. 

It is unbelievable and awesome how many different tests and functions that you can do with a good multimeter! The most useful thing that I found with multimeters in troubleshooting is the ability to read electricity and amperage through an insulated wire! How can it do that? Just clamp around the outside of the wire and see how many amps are being used and see the flow of electricity! Awesome to say the least!  I hope this video helps you understand how to use a multimeter! If you have any questions please email us anytime or comment below. Our email address is arnoldservice@gmail.com

We Would Love to Help You Out and Earn Your Business!


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Problem: I have a bad igniter is there anyway to light a gas furnace manually?

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Problem: I have a bad igniter, is there any way to light a gas furnace manually? My family is cold please help!

The solution in an Emergency Situation: An Emergency situation would be a situation where your furnace ignitor goes out in the middle of the night, on the weekend, or on a holiday. It is super cold outside and you need to get heat from your furnace to protect your family and the pipes from freezing. We have had many customers who are cold and without heat over the years on the weekends or Holidays. They do not want to wait on a service tech or wait on shipping for a new ignitor. They need heat as soon as possible. I feel very sorry for them being without heat when it is really cold out! I decided I would include this YouTube video on how to light a gas furnace manually on our website. Below we have a YouTube video that shows how to manually light a furnace when the ignitor fails. I only provide this video because I do not want to see anyone be cold when they could actually have heat in their home. Changes in the video that I would make would be to (1) use a long wooden match instead of the lighter. (2) Make sure the match is burning when the draft inducer comes on. You must make sure the burning match is sitting in front of one of the burners before the gas valve opens. The worst mistake would be to allow gas to come into the furnace and then apply the match. This could produce a  mini-explosion or fire! (3) You should control the furnace On/Off using the electrical switch (like a light switch) usually located on the side of the furnace. This way you are not depending on someone else to turn the thermostat up and down and you have immediate control of the furnace.  The match needs to be burning and sitting in front of one of the burners before the gas valve opens. Please remember the gas valve is only going to be open for 7 to 10 seconds and if the flame sensor does not sense the furnace flame then the gas valve will shut off until there is another cycle. Below we have one YouTube video that shows how to Manually Light a Gas Furnace when you have a bad igniter. The video was made by Chris Swain. Thanks to Mr. Swain for making this informative video. I hope this will save you from having a cold home.

Please send us your furnace’s model number if you would like for us to use one of our online parts programs to recommend a replacement ignitor for your furnace. On Bryant Carrier furnaces we will need the product number. On Rheem Ruud, we will need both the model number and serial number. For all other furnaces, we need just the model number.  Our email address is arnoldservice@gmail.com. Please click here if you would like to see the furnace ignitors we sell.

*Disclaimer: Arnold’s Service Company, Inc. assumes no liability for any incidental, consequential, or other liability from the use of this information. All risks and damages, incidental or otherwise, arising from the use or misuse of the information contained herein are entirely the responsibility of the user. Although careful precaution has been taken in the preparation of this website’s information, we assume no responsibility for omissions or errors.


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How to Troubleshoot and Test Furnace Hot Surface Ignitors Videos

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Below we have two YouTube videos that explain how to troubleshoot furnace ignitor problems. We hope these videos will help you troubleshoot and repair your furnace. Please send us your furnace’s model number if you would like for us to recommend a furnace part. On Rheem Ruud furnaces we will need both model number and serial number. On Bryant Carrier furnaces we will need the product number. We sell furnace hot surface ignitors on the following (5) pages: Please click here if you are interested in seeing the furnace hot surface ignitors we sell. Our email address is: arnoldservice@gmail.com. We take pride in answering emails quick! We would love to help you out and have your business!

Below we have two YouTube videos that explain how to troubleshoot furnace ignitor problems. The top YouTube Video shows how to replace your furnace ignitor and flame sensor:

The YouTube Video below shows you how to test a furnace hot surface ignitor. We hope this will help you troubleshoot and repair your furnace.

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