Finding An Electrical Short Within An HVAC RTU - Fuses Keep Blowing

The electrical short revealed in the video is one that some HVAC techs have trouble locating. It requires one tool, eyes. In worst case scenarios, we can use a megohmmeter to find these shorts, here is an older video using a Supco M500 • Carbon Tracking Example . Because they are at the top of the contactor or line side sometimes it's difficult to find, that's why the title, states "hidden electrical short". Every HVAC/R tech should be aware of this issue.
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#hvactroubleshooting #blownfuses #carrierrtu

[@CommercialGasEngineerVideos]

Loving the quality. So much time goes into recording, editing and publishing. Much appreciated

[@HVACKnowItAll]

I appreciate the comment, cheers!

[@CommercialGasEngineerVideos]

@@HVACKnowItAll keep up the good work

[@HVAC544]

Glad to see you still doing commercial content! Got into commercial service a year ago and love it so much better than residential.

[@HVACKnowItAll]

Weather permitting, I also prefer commerical service

[@FreddyPrieto94]

i first came across your channel when i was thinking of what trade to get into. I saw your video "How To Be A Successful HVAC Apprentice". I recently got my universal EPA and i'm about 50 hours away from completing my 900 hour course. I appreciate guys like you in this field. The fact that i can go home after class and watch videos like this to help me prepare for my 1st job in HVAC is a blessing. Keep up the great work

[@coldfinger459sub0]

Excellent visual description for those who have never seen it. The new kid we just think it’s dirt and dust.

[@HVACKnowItAll]

Cheers!

[@HVACKnowItAll]

Carriers are notorious for this.

[@sledderguy1871]

Great video! I’ve had the exact same issue on the same style carrier RTU. rain/snow melt was getting in on the top of the unit through screw holes. Would blow fuses very irregularly, everything wound ohm and megger out fine. I sealed up the screws with silicone and the panel with foam insulation tape. Replaced 3 contactors and control board No issues for about 2 years!

[@HVACKnowItAll]

Yep

[@Eddy63]

Nice catch ... Wish everyone had your attitude ... Thx ...

[@luishernandez5394]

Loose connections as well will cause wires too get hot melt the wire and cause a short and blow a fuse

[@roberttozser1975]

That's a 15yr old problem & Carrier makes a snow kit for the control compartment. 👌👍✌️

[@mtgwdefender]

Thank you. Good catch. Freaking lazy technicians who were just replacing fuses.

[@HVACKnowItAll]

May have been someone not trained up either.

[@mbahcarrier1629]

Thank you for the knowledge, success for "HVAC ....." ... Pekalongan, Central Java, Indonesia attended

[@stevencossaboon3237]

Nice job Gary. Learned something today.

[@naughtyfrom]

I will try to recreate the water infiltration by pouring water on the unit and find where it is penetrating to the electrical. Good video

[@HVACKnowItAll]

No need to do that, use a megger. I put a video link in the summary

[@dipley3771]

Good catch , they were leaving those fuses behind for the chosen one to solve

[@soloch69]

Great video keep them coming happy holidays and merry Christmas to you and your family. Stay safe out there. Thank you for sharing your skill and knowledge.

[@jm7store]

Thank You for the help.

[@wileycoyotegenius1]

nice work bro, good information for us to use in the field

[@HVACKnowItAll]

Glad to help!

[@rruizproductions]

Great Job!

[@davehahn4011]

Great find.

[@HVACKnowItAll]

Thank you sir!

[@cjshvacjourney4034]

Thanks for the knowledge!

[@HVACKnowItAll]

I try lol

[@Learnhvac.]

Great work

[@brianmcdermott1718]

Great tips Craig. Thank you.

[@HVACKnowItAll]

Gary*

[@HVACKnowItAll]

Thank you

[@isaiasjrc9453]

Good vid gotta pay attention to detail thanks

[@LongTrout]

I always hated carriers. Good money for a service tech. I used to blame phases being out of balance. Guess I was wrong.

[@HVACKnowItAll]

Definitely good money when parts are in

[@kennethlobo4420]

Thanks a lot for this video

[@HVACKnowItAll]

You're welcome!

[@AngelGutierrez-yu7ww]

Good video 🙌👍

[@HVACKnowItAll]

Cheers Angel!

[@jsosa2727]

Thank you.

[@HVACKnowItAll]

You're welcome

[@jeffgrant6914]

Good video 👍 buddy

[@HVACKnowItAll]

I appreciate it!

[@bstables1929]

I have a carrier heat pump for my house, it keeps blowing fuses, and capacitors, but not throwing any codes. I’ll look for bad connections, it’s about 10 yes old. Thanks for the insight.

[@VIDSTORAGE]

The companies making theses fuses are in the black

[@electricboogie709]

😊👍

[@stephwaylonwells3218]

👍

[@bassmaster2009]

did fuse blow after that??? any updates?

[@HVACKnowItAll]

No

[@DS-fb9te]

@@HVACKnowItAllyou are the man.