Blown 3 Amp Fuse in AC quick fix - Save $300-$800

DIY and save $300-$500. Blows the 3 amp fuse on the control board for my Goodman AC unit. This was done after I couldn't get an appointment soon enough for an AC repair person to come and check out when my AC is dead. 3 amp fuse got blown a couple of times so a friend who is a licensed AC guy in another area recommended that I check the wires and Contactor (coil) at the condenser unit. I did and found out it was burned. I went a head and replaced it. Everything is working as it should.
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Circuit board in AC keeps shorting

[@marylarsen5099]

The repair guy wanted to charge us $1200 (same day appt.) to come over and check our AC. But I asked my husband to check on KZbin and watch your video. He fixed it himself. Labor = $0 fuse = $4.92 pack of three Contactor coil = $15. Saving $1180. Thank you

[@brandonvetrano]

1200 to come look at the unit? LMAO I FIND THAT UNLINKLEY silly ass post. 100% not a COMPANY if they did

[@kangellohio]

I can't thank you enough for sharing this information! My air conditioner went out in my dog grooming shop, and my husband was able to fix it because of your video! 🤗

[@SnapFix]

That's awesome. I'm glad it helped. Thank you for sharing

[@thadondotta337]

Lol this fixed my unit, was the fuse you stated, the contact block was fine but the wire connectors corroded, I wire brushed them all and we 40 the connectors, installed new fuse and ran like a champ! Last year the condensing fan ran but not compressor, capacitor was bulged out so I replaced it and that fixed that lol it’s an old ck30-1 unit.. love KZbin lol you home appliance and heating and cooling guys are the real mvp! Thank you for sharing the knowledge! Because of you I now work for a heating and cooling company as an apprentice!!!

[@Tgolden069]

I have no idea how much money you saved me. Went to use the heat for the first time this morning and nothing. Found this fuse and your video, replaced and runs 100%. Thank you. Thank you. Thank you. Seriously.

[@SnapFix]

you're welcome. I'm glad you saved some $

[@anthonya3220]

You're the man. Saved me a fortune and a lot of hassle. 3 amp fuse blew replaced it fan went on for 30 seconds and then went off. Compressor never went on. After watching your video, I grabbed a spare relay that I had in my garage from an old pool heater that I had. Hooked it up and ac is working perfectly. Thanks

[@SnapFix]

nice. I'm glad it was helpful. Cheers~

[@allenharis9590]

Thanks a lot man.. this gave me direction on where to look.. the contactor was fine in my case but was full of dirt and cob webs.. cleaned it out and fuse doesn't pop anymore.. thanks for the helpful video...

[@SnapFix]

Thank you. I love to share a few tips here and there out whenever I possibly can. It's great that you found out the problem. Some shady contractor could easily charge you a few hundreds bucks for a small job.

[@timomirelli2268]

Awesome. You saved me $500 bucks. Thank you

[@TheRocknRolla84]

MAN! Thank you for this video good sir!! I've been battling an AC unit at work. So far I've fixed all the old crumbling thermostat wires at the outside condenser. I also checked all the thermostat wires inside and outside for other shorts and found none. I made sure all the connections are nice and tight. I pulled the thermostat off the wall and checked all the connections there and they are good! And yet that damn fuse still pops! I've run out of options! So now I'm here. When I get to work tomorrow I'm going straight to the contactor to see if its shot! I really hope that's it! Because if its not then I'm stumped and going to have to call an AC repair company. I really don't want to do that! Wish me luck! Hahaha!

[@rubensanchez2915]

Thank you very much! Your video was very helpful. My system has a reset button instead of a fuse. But thank you very much. You saved me some money too.

[@rudygarcia6991]

You saved us a lot of money. Did as you said. Checked for a short. Found a bad wire.

[@SnapFix]

Awesome. I'm glad you found it helpful. Thank you

[@ajkron83]

This is exactly what's happening with mine. I'll have to check this once I get home from work.

[@SnapFix]

It happened to me on the hottest day too. It would have cost me $500 easy for someone to come out and have a look but I couldn't book an appointment with anyone. I got lucky that a friend of mine who is a lic. AC guy knew what was happening to my unit and showed me how to fix it.

[@ShawnPatel-pf1ry]

THANK YOU THANK YOU THANK YOU THANK YOU SO MUCH!!! I'm pretty handy but have never face this issue with my home AC.. My Fuse blew out cause of the contactor coil and your video saved me so much money. SERIOUSLY THANK YOU!!!!!

[@mfvarnum58]

Thank you for video. Saved me $75 service fee by diagnosing this problem.. my thermostat was not getting power and this help me figure out why.. burnt fuse. im replacing it with a 5amp automative fuse. 3 amp will work too.

[@SnapFix]

I would recommend that you stick to manufacture recommend fuse. If your AC is using 3amp then stick with 3 amp. change it to 5amp may cause other issues before the fuse blows out. :)

[@gacputech7719]

I also thought a 5 amp fuse was close enough to the original 3 amp fuse. Please learn from my mistake. The unit ran for a few minutes and then burned out my 24 volt transformer, and I still need to locate the original problem!

[@Digitalsine]

Always nice to save money. Power to the people.

[@alvarogarcia2271]

I will try your advice thanks for sharing a short video great job

[@stevegeorge8127]

The video was a great help had fuses blowing and after watching and replacing the coil component now working great. Thanks for the video I would of never figured it out 👍

[@SnapFix]

you're welcome. glad it helped.

[@JP-zz5rm]

How would you go about wiring in a resettable amp fuse if the unit doesn’t have an amp fuse or a circuit board? Would I connect 24V and C off of the transformer or 24V and R?

[@dwstmyr]

Good info. Had an HVAC company come in and replace this fuse (I didn't know) and the fuse alone was $30! Tried to get a reduction and that didn't work.

[@SnapFix]

Wow. That's a huge marked up. You can get one at most auto part places for less than $5.

[@halseyballistic]

Nicely done!

[@soberanoluis]

Thank you, and GOD BLESS YOU.

[@SnapFix]

Thank you

[@race5050R1]

Nice and simple video. Thanks for sharing!!!

[@prot0type90]

Thanks Kermit! good tip and such an inexpensive fix

[@SnapFix]

You're welcome and thanks for sharing.

[@ars9328]

Had same issue. The same problem. Thank you.

[@pobept747]

Thank you, your video set me on the path to discovery where I ended up fixing my AC not working. I was at the point of suspecting things in the furnace, and had never had a need in the past to pull of the furnace panel. 1. Thermostat, an old Honeywell was flashing "A.C" this code, though not documented does not refer to Air Conditioning but to no power to the thermostat. I verified with a multimeter. 2. My Furnace circuit board showed no blinking LEDs. It also had no visible fuse. It did however have a small push button fuse/min breaker on the board. 3. I reset the push button breaker. 4. When my thermostat was set to heat, no problem, the burners kicked in. 5. When set to Cool, the furnace circuit board breaker tripped. 6. Now moving to outside. After removing AC mains fuse _and_ switching of the low voltage using the switch on the exterior of the furnace, checking with multimeter and voltage detector of course. I removed the access panel to the wiring of the external AC unit and discovered a large nest of some sort. 7. After removing the nest I notice that whoever made it had gnawed away at the insulation on some of the low voltage wiring, looked like some bare copper to copper was touching. 8. I cut out the bad exposed wire, replaced with 14 AWG flexible, connecting the new bits of wirre with external grade wirewrap connectors. I also added some heatshrink to the remaining exposed thermostat wire and also used liquid electrical tape. 9.Voila working again. Total time spent about 2 - 3 hours including a trip to HD for some new connectors. 10. Happy wife happy life!

[@SnapFix]

Thank you and I'm glad you got it resolved.

[@staytight6340]

Wow they won't understand that 😉

[@southtexasprepper6605]

Same thing happening to me, changed contactor and it worked but it still keeps blowing.

[@vinothkalyan4671]

Thanks for this very useful video. My AC is not working and while checking on fuse, it blown… I have updated the fuse with new one and switched on the AC… but again it blown. What could be the reason? What are other things I have to check? Please advise…

[@GerbyWorrior]

Did you ever figure it out. I’m having the same issue

[@RevZafod]

I have a similar circuit board [Amana, made by Goodman]. A/C pro neighbor told me to replace the 3 amp fuse. Your video was a big help, but on mine they saved a few pennies by using a wire jumper instead of the fuse. Still working on it. Also replaced the outside capacitor and contactor, and the inside 10 microfarad run cap for the blower motor. Ain't fixed yet, but this saved me a lot of time looking for a non-existant fuse.

[@SnapFix]

I'm glad it helped. Thank you

[@RevZafod]

This might help others with a system like yours, but without a fuse; with a jumper wire where the fuse should be. Getting there... my inside circuit board had a JUMPER WIRE where the fuse should be. Ran heating all winter, but when I ran the A/C first time, a bad contactor [relay] outside blew the inside transformer because there was NO $3 FUSE! If your system has a jumper on the inside circuit board and no fuse, check the outside contactor relay for damage BEFORE ever turning on the A/C unit! Long story short, I've spent about $200 for parts, including the outside fan motor, capacitor, and contactor, and the inside 10 microfarad fan run cap, and the new transformer found on Amazon Prime for about $26, due on Sunday after ordering Friday night. Again, long story short, if you have the time in early spring to live without heating or A/C for a few days, you CAN do it yourself. my unit is about 15 years or more years old, and updating all the minor components has to take a load off the compressor, possibly adding a few years to its life. The outside cap can was reading 8% off rated, and the inside fan run cap rated at 10 Mu-f was at 7.36. I consider it a couple hundred bucks well spent, modernizing all those components, that may extend the life of the compressor. I also bought a Fluke 117 HVAC meter that checks the capacitors, which I can use for other things as well long-term. You can save a lot of money on DIY, with an A/C pro friend's and neighbor's advice. I bought him a bottle of Casa Noble Single Barrel Extra Anejo Tequila for payment. I've lived without heat or A/C for two weeks and it ends tomorrow... Knock on wood.

[@RevZafod]

Correction; Fluke 116, not 117. Installed new transformer just in time to get heat during a cold snap, to keep me warm after 2 weeks with no heating or cooling in N. Texas where Spring is variable.

[@pineychristian]

The fuse was install for safety reasons and so you don't burn up transformer or circuit board which can easily happen with a jumper wire in place. Don't ever put a jumper wire in. Not even for testing. Your obviously a home owner trying to fix his own equipment. Thats why you had no heat/ac for 2 weeks. Pushing out bad ideas on people is a safety issue and will cost them more money

[@404salcido]

JJ 109 he never said he put the jumper in. Some other yahoo might have done that read carefully before commenting cause it just makes you sound stupid. “Stupid is as stupid does,” Forest Gump

[@bruceLi2011]

Thank you very much for the info. I have the problem the condenser was off. Checked the contact relay was not energized by 24VAC and was wodnering what the problem was. Now I know the upstream 3A fuse and I will look for it and check it. Is it on the control circuit by the relay? Thanks

[@randallburns4946]

thanks for help!!!!!! worked.

[@veronicapimentel1905]

Wish I would have seen this before I paid $90 for them to come out and change the fuse that cost a couple dollars. It blew out again and he told me to buy one at the store because he was out of town.

[@chrisfigueroa5317]

He should of found the reason why the fuse was blown, not just replace and go. But the price is fair. You are not really paying for the part but the knowledge, bc if you don’t know what you are doing you can do more harm to the unit but more importantly you can really hurt or even kill yourself.

[@jamesgerace841]

thanks! ordered the part for 14.06 and a dollar for a fuse ! git it working fast!

[@SnapFix]

nice. I'm glad you got it solved

[@shottown911]

Thanks for the video

[@hblack6493]

Wow I had the same issue thanks 👍

[@SnapFix]

Your're welcome. I'm glad you got it figured out.

[@anandamara]

Awesome. This helped a lot

[@SnapFix]

thank you

[@jxcess3891]

Can you please make a clear video that points out all the relevant parts from a little afar. You have recorded everything at such close angles that it's difficult to know what is what.

[@Ravindersingh-jl9by]

Awesome. It worked. Thanks

[@SnapFix]

you're welcome.

[@daconodad474]

That’s exactly what was going on with mine .Thanks a lot saved me some coin !

[@SnapFix]

Awesome! It could have cost me a few hundred coins for sure if I didn't know any AC friend.

[@christophersinger4876]

Good one, thanks for that info

[@SnapFix]

You're welcome. Hope you find a cause for it and save some $

[@gods959]

Thanks for sharing your knowledge blessing and more blessings to you and your family in Jesus name Amen

[@PayamShirazi]

Great informative video

[@SnapFix]

Thank you.

[@rickrey3099]

THANK YOU ! amigo,me ayudo mucho !

[@SnapFix]

you're welcome. I'm glad it was helpful

[@manutech156]

Thanks, this save me some money on hiring a technician

[@SnapFix]

Glad it helped.

[@DiegoVilche]

Genius genius!

[@SnapFix]

thank you

[@Carlos-vu6ei]

Were is that fuse ?

[@shakejunt009]

Fuse Keeps Blowin . Any Ideas?

[@abcdefghijklmnop9016]

Our Ruud was blowing the fuse in the air handler inside the house and everything shuts down completely. The repair man changed the connector out side and it will work fine for a few weeks at times and then blow another fuse . I replace the fuse and it works fine for a while then it will do it again . Would you have any advice you could give me on what is caused this to happen ... would be much appreciated.

[@michaelscoots]

Sounds like a bad wire. What ended up being the issue?

[@markwheeler1620]

Thank you very much

[@SnapFix]

You're welcome Mark

[@jakedawg7785]

Awesome...Thanks

[@SnapFix]

you're welcome Jake.

[@syedfamily3940]

Hi There, How to check/tell if fuse is blown in furnace. Looking at it visually I don't see anything wrong or burnt marks or anything out of ordinary but my symptoms are same. Not AC or heater or fans are working. Please share if anyone knows.

[@SnapFix]

Please check to see if your system has a reset button instead.

[@Luis_sd_wrx]

So my AC won't turn off I disconnect my ecobee thermostat from the wall it goes off then I put it back the AC and heater is off but ac fan is still running... Help

[@BeckVMH]

I had the exact problem, HVAC system just shut down. Checked the breakers and condensate lines, all good, but wasn't familiar with a simple fuse to the system. Wish I'd found this video and would have saved $165 for the service call which also included a check of the system for pressure etc. Just bought the home last year. Perhaps you could amend your title and/or description to include no power to HVAC system, air handler. Regardless, thanks for posting.

[@SnapFix]

hope you got it fixed though with the heatwave we're dealing with

[@BeckVMH]

@@SnapFix Actually, we did. Even after the fuse replace, blew again several days later. Determined to be a couple wire touching where outside wiring led to condenser unit. Thanks.

[@staytight6340]

Not the problem for me Changed it and the fuse still blew The fan works as well as the heat on the t stat please help my elderly mom.

[@SO-kv5cc]

Thanks

[@SnapFix]

you're welcome @Shawn

[@adamrspears1981]

Do you know WHY the contactor coil burned? If not, then you might not of corrected the source of your problem.

[@crand20033]

Lightning strike, bad capacitor?

[@joepah51]

Contactors age and corrode.. They should be replaced every few years along with the dual condenser.. $10 parts.

[@crand20033]

@@joepah51 I think you meant the dual capacitor.

[@arodandjeter1]

David Crandall I think he did too but why change parts every few years if they’re not bad?

[@crand20033]

@@arodandjeter1 To avoid condenser failure.

[@E3istheg]

hey guys dont know anything about fuses but my ac blew a 5 amp, all i can find online are car fuses is it safe to use those in my ac ?

[@SnapFix]

As long as it is 5 amp, it should be ok.

[@gacputech7719]

I replaced my burned out 3 amp fuse with a 5 amp car fuse, it ran for a few minutes and now my transformer is burned out!

[@jenniferbyrd3910]

Thanks pal

[@SnapFix]

you're welcome. hope it helped.

[@techfive7202]

I want to know what supply house sold you that.

[@SnapFix]

You can find it at your local HVAC supplier or best bet is to find it online. There are quite a few of them being sold online. I typed "where to find air conditioner contactor coil". hope that helps.

[@EssentialXL]

Yes, it's the Goddamn AC!

[@SnapFix]

yup

[@kylecasella200]

My fuse went on my furnace, repairman replaced the fuse and our furnace was up and running. The next week it got hot so we tried to switch to AC and it never turned on (newer unit, only about 6 years old). Got cold again and when we tried to switch back to heat that didn’t turn on either. Not sure what is going on, any idea what could be blowing the fuse?

[@SnapFix]

I think one of the wired must have gotten loose or cut. I would go check on that first including the outside (condenser) unit outside. Did you check the fuse to see if it got blown again?

[@LuisSalazar-ev3hh]

Hi, the furnace doesn't turn on and the red light inside of furnace (down) is permanently on, means ?. The thermostat display AC on, probably is the fuse ?, or why the furnace and the AC do not work ? Thanks for your answer.

[@SnapFix]

Are you trying to tun on the heat or AC? You should set the thermostat to "heat" not AC if you want the furnace to turn on.

[@LuisSalazar-ev3hh]

@@SnapFix Hi..the AC..

[@SnapFix]

@@LuisSalazar-ev3hh The furnace will not turn on for AC operation. Is the fan running at all?

[@LuisSalazar-ev3hh]

@@SnapFix Hi ..I replaced the fuse 5 amp and set the thermostat to heat ..Furnace was working good, later I set to AC..and nothing, fan didn't turn on...but the thermostat display AC on ..so ?..thanks again

[@SnapFix]

@@LuisSalazar-ev3hh Is the condenser unit outside running at all? Please set your thermostat to "on" to see if the fan is working

[@synovium]

Can you use a 5amp fuse instead of a 3 amp fuse

[@SnapFix]

I would not recommend it though. It was designed with 3amp on purpose. The reason is that it may cause some other issues before your 5 amp fuse break

[@gacputech7719]

I replaced my burned out 3 amp fuse with a 5 amp car fuse, it ran for a few minutes and now my transformer is burned out!

[@emperorsanders5744]

Can capacitor blow the fuse or is it always contractor

[@SnapFix]

Technically yes and it's not always a contactor coil. It could be as simple as a damage wire somewhere which could have caused a surge

[@emperorsanders5744]

@@SnapFix I start getting E103 error which is over current in Y wire on Nest thermostat. this happened after the power surge last year but it was getting cold so I start using a heater with no issue. This year I went back to the thermostat and turn on AC it gave me the same error E 103. I then searched and concluded that I need to change the contactor. I replaced the contactor and reset the nest. it worked for one hour and then the same error. Then I decided to put the old thermostat and check if it is a faulty Nest thermostat. The new thermostat blew my fuse each time I tried turning on the AC. What could be the reason for all this? also, I have replaced the old one pole contactor with two poles with 40 amp high and 30 resistance. is this resistance too low?

[@nothingcool6849]

Okay so we replaced ours and the fuse still blew. What could it be, the circuit board?

[@SnapFix]

There is a short somewhere. I would check any loose wires first. If not then yes circuit board could be the issue

[@christinahaskett120]

Whst is that part called you replaced?? I didn't really understand what it was called

[@SnapFix]

contactor coil @@christinahaskett120

[@joepah51]

Unit went completely dead, nothing worked, and didn't want to call an AC tech on a Friday night $$$$.. After fiddling with the breakers and the outdoor unit, I opened up the panel to the blower motor and circuit board... Had no idea there was an inline 3 A next to circuit board.. @#$%! Got to Ace hardware before they closed and found 3 Amp blade fuses. Replaced the blown fuse and was up and running! I didn't see any blown capacitors on the circuit board or the capacitor mounted next to blower.. Guess I'll head out tomorrow and look over the contactor on the compressor unit or anything else that looks puffed, burnt or blown. Thanks for the video you gave me ideas of what to look for. didn't find your video until i replaced the fuse, who knew what to look for?

[@SnapFix]

I know right. It's a good thing that they actually designed the circuit board with 3 amp fuse. If not we may have to replace the whole board and that could cost quite a bit more. I'm glad you got it your AC working though.

[@SPPrice]

Where is best bet for buying contactor coil and 3 amp fuse. Walmart didn't have the fuses

[@SnapFix]

Please check with a local shop that sell AC repair parts for the coil. Walmart won't carry it. I found the 3 Amp fuse at Auto zone and O'reilly.

[@SPPrice]

@@SnapFix bingo. Found the 3 Amp fuse.easily at Auto Nation. Store for coils and capacitors closed up before I could get there.

[@SnapFix]

@@SPPrice Great. hopefully the weather is mild enough where you are at to wait another day. Good luck. Don't forget to cut off the power to the unit before you change it out :). Cheers

[@chasburns3303]

AutoZone had a ton of 3 amp fuses

[@SnapFix]

@@chasburns3303 Thanks for the sharing.

[@rakyvan]

Any idea if replaced with a 5 amp and not 3 amp would cause it not to power on thermostat?

[@SnapFix]

Good question so I called my friend (Licensed AC guy). Per his explanation and recommendation. He said DON'T do it. If you use a 5 amp fuse in place of a 3 amp, it can and will cause more damage because the fuse has a specific amperage rating to handle the load in case of a surge. He said that it may not even be a thermostat. It too much power going through the system.

[@rakyvan]

Good to know! Thanks for the info!

[@SnapFix]

@@rakyvan Thank you and You're welcome

[@adamrspears1981]

& this is why houses burn down! Call a professional. Is a few dollar fuse really worth risking your family's lives? Smh....

[@dougngn]

@@SnapFix Exactly ! ! ! Always use the proper rated fuse for that circuit ! ! You explained it well !

[@AllTattedUp13]

Whoever installed that ac Is a hack lol. Mounting the disconnect box to the side of ac like that. 😂😂

[@efrainramirez4446]

👍👍👍👍👍👍👍👍👍👍👍👍

[@SnapFix]

thank you 😎

[@deathrawphantasma]

Next time show us how to wire it

[@alow2323]

Can I use a 15amp fuse for tonight then change it 2morrow? ?

[@SnapFix]

I wouldn't recommended though because these fuses are designed for load breaker too.

[@alow2323]

@@SnapFix well a bit to late my house 🏠 blew💣🔥 up ...... fire 🚒 department said the only thing that survived was the 15amp fuse 😨😨 ...... anyone need a roommate ??

[@cjjonez]

It would have really been a real help if you could've shown us the actual replacement of the fuse😫🤨

[@SnapFix]

It is fairly simple to replacing the fuse (out and in) . I would ok to tape a clip and show you but youtube doesn't have that feature (yet).

[@cjjonez]

@@SnapFix the other videos did. But thanks, also i cant find my fuse my system must be older.

[@eduardolopez-zb7vf]

I HAVE THA PROBLEM THE PROBLEM WAS THE THERMOSTAT.

[@SnapFix]

Thank you for sharing

[@kylestoyko9031]

You don't say what to look for or how to install.

[@SnapFix]

Please turn off your main AC circuit breaker or circuit breaker or the to be safe. If you have never done it before, I would suggest to mark which wire goes where. Or you can take picture to help you. This will help to reinstall it much easier. It has a few screws. As far as what to look for is the coil itself first to see if it burned or damage in anyway.

[@crazyphil7782]

And this costs 500 bucks WHY

[@SnapFix]

Exactly. I had the same question but that's how much an AC technician wanted to charge me. Perhaps his labor rate is about $200+ an hour.

[@crand20033]

@@SnapFix Because he has to pay back that school loan. Just like lawyers also charge for each question they answer. We had better learn from youtube vids.

[@pineychristian]

Your video should not be showing how to fix things without testing or without using safety precautions before working on HVAC equipment. Its not a good idea showing someone how to do this without checking for power even though power is off. I didnt see you use a meter or any kind of electrical tester what so ever. You plug in the furnace???? Just cause there is a burn spot on contactor you replaced it? What about checking with meter?