@letsbetechs: One of the methods I use to chase low voltage shorts. Couple useful things here. How I handle batteries constantly being put in a stat that utilizes a common. No matter how often you tell them not to. It just delays them realizing they have an issue and delays young techs on diagnostics. We also trace a bit of wiring in the wiring diagram. When trial and erroring the stat wires, there is no right or wrong, most commonly it is found in the red wire, but I myself always save it for last. No rhyme or reason other than I don't want it to be the red, so maybe due to dread. And I guess there is a rhyme. But weed eaters are color blind! After pulling on wires and losing the active short, I show a trick I learned from watching a video, to use your megohmeter to assist in locating shorts. Unhook both sides of what you are testing, check it to ground. Hope passing this info along this proves helpful! #hvac #hvacapprentice #hvactechnician #hvaclife #hvactroubleshooting
Lets Be Techs
Region: US
Saturday 07 March 2026 12:41:10 GMT
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illicitizen :
nightmare on Goodman street
2026-03-07 13:33:49
426
stan b :
Now I have to buy a new tool. Good video
2026-03-07 13:22:03
229
0820danny1 :
Could have eliminated the whole troubleshooting process. If it’s a Goodman heat pump, the low pressure switch wires lay on that cap tube and rub through…. Every single one of them. We don’t even charge people to take care of the problem anymore because it’s a manufacturers defect.
2026-03-07 14:18:06
50
JDR :
This is a great video broken down on troubleshooting a low-voltage issue. Thank you for taking the time and posting this. This was very educational.
2026-04-02 13:05:58
6
Chefs Choice Restaurant Repair :
I actually had this exact same problem on my Goodman! Smdh
2026-03-07 14:00:41
14
Tik Toker :
Why not disconnect and check to ground if its shorted or even check ohms?
2026-03-08 05:54:29
8
trsmith394 :
Here’s my question. You ran the meager at 1000volts. Does that not affect the pressure switch with the voltage potentially going through it. I understand there is like 1ma. But still can’t that voltage hurt the switch at all
2026-04-10 01:53:55
7
Lil Barnacle :
I usally put the line insulation around the copper and tape it cause ive seen zipties vibrate the copper n make a pinhole leak
2026-03-08 12:23:57
5
leakycoilR22 :
pressure switch. I haven't even finished the video and it's the pressure switch.
2026-03-08 14:58:15
10
Frank :
Sherlock Holmes has nothing on you. such a great video on how to deduce which wire is shorted. I love these videos. I'm retired and out of the business but these videos should be a must watch at HVAC School.
2026-03-07 17:08:16
24
lwtubvbko67 :
The wire routing inside of these heat pump units is atrocious. Our heat pump had a wire that was touching the main pump tube. It rubbed through and arched a hole in the tube and leaked out all the Freon. Had to replace the whole system at $20,000.
2026-03-08 15:38:54
21
Irving Jimenez :
This was one a couple days ago
2026-03-08 02:59:53
12
August :
I learned so much from this video.
2026-03-07 17:52:26
160
Sirmoncy :
Bro just use the multimeter and check continuity between pressure switch terminals and ground
2026-04-04 01:41:04
5
GC :
We had the same problem on a Lennox. It was a needle in a hay stack. The wire was on the TXV pipe. We also had the wire cause a refrigerant leak in the pipe.
2026-03-08 01:22:09
1
Aye_byrdioo :
I’m not on the field yet so this is great information.
2026-03-07 16:21:35
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user9647782079228 :
common problem with those goodmans
2026-03-07 13:39:20
11
Timmay :
That’s a diag. 😮💨
2026-03-09 21:17:16
11
Adam Weed :
You have the gift sir! Good work.
2026-03-07 21:43:05
8
Darnell Anderson :
Goodman are known for that
2026-03-07 16:49:21
5
Alex Jimenez :
Wouldn’t a regular multimeter work just as well to find that short?
2026-03-07 20:40:12
5
2BeContinued :
ill take a jumper at the t stat and quickly jump r to each of my terminals until I see the spark. beats pulling all the wire nuts.
2026-03-08 03:11:16
5
Shawn winans :
Soon as I seen the brand and blown fuse i already new were it was. I find literally multiple of these every year.
2026-03-07 12:56:06
42
William Jelu :
Thanks thata be $1,000🤣
2026-03-08 14:54:02
13
jeffbugado :
wago connectors would have been better in this situation
2026-03-08 21:54:39
5
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