Compressor Diagnosis On Two Separate Systems!

In this video I visit two customers with similar problems! #hvacguy #hvaclife #hvac #airconditioning #airconditioner #hvactrainingvideos #hvactroubleshooting #hvactechnician #furnace #aireacondicionado #heatpump
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[@northernliving2387]

Curtis, just a thought. Could you do a 501C3 organization where people could send in donations to help those who have low income to help with the repairs costs?

[@Hvac-dude]

Cant wait to see compressor change out 😊

[@robalexander7348]

Good one Curis, you have done your best with those two jobs 👍 Au

[@jthonn]

Yep, when they're gone, they're gone, what can you do? Good video

[@ftwbreeze]

Good morning Curtis. Each day you get up and meet life head on, you offer help and assistance to people. One thing for sure is you show respect to others while doing your best. Repair business is one of the most rewarding and sometimes uncomfortable businesses out there. Just another day in paradise my friend.

[@Paul-IE-Repairs]

whew 1998, i had a feeling that condenser rolled off the assembly line when clinton was in office.

[@JohnnyCarroll-wi6tx]

curtis,you got it made.never forget thet.

[@BigDaddy_MRI]

Thanks! Great video!!

[@HVACGUY]

Thanks, glad you liked it.

[@terryh8421]

Good video Curtis, no crispy critters today.

[@joevarco950]

Learning a lot. Thank you

[@kens.3729]

We have to Celebrate 4th of July and many make a Weekend out of it. 👍🙏

[@northwoodsliving101]

I'm going out on a limb and saying Curtis is not found of spiders!

[@HVACGUY]

I’m at peace with them, and know way too much about them. But certainly don’t want them crawling on me.

[@MariosACandRefrigeration]

If you can be without ac for a week,then the customer can wait.nice work.

[@DanT271]

This weather we have been experiencing will cause weak components to act up

[@eco-solutionsllc4412]

Good Deal buddy , happy 4th

[@jimharmon3404]

Curtis, you said that 13. Meg Ohm is enough to trip a breaker. Could you explain that, please? In my world 240 vac across 13. Meg Ohm results in a current of 18.46 microampers. Even a GFCI leakage current doesn't trip until it sees 4. - 6. Milliampers. I have heard you state this before. The customers have 40 Amp breakers so I can't figure out why you said that.

[@alabamahvacprofessional2946]

Exactly. Sadly, Curtis needs more training while using a meter to check electrical resistance to ground.

[@v12mike30]

For there to be any leakage to ground, the insulation inside the compressor must be compromised, either by burning or rubbing with vibration. Once that happens, the wire will start arcing across when high voltage is applied ((perhaps only when the compressor is vibrating), and it is the arcing that trips the breaker.

[@mediadaemon]

I too was curious on that. I really think its a capacitor failure and not grounded compressor. He even said 40 meg ohm when on the comp itself

[@HVACGUY]

You’ve got to understand I’m checking with a 9V battery. If you apply 240V under load the results are much different. When I use my megger anything below 20 Mohms is labeled as bad, and I’m not using the megger. Unfortunately the ohms law doesn’t make much sense when applying it in this case.

[@davidb2438]

I believe when it is running and hot, there may be more breakdown of insulation also

[@stevencossaboon3237]

Nice jobs Curtis.

[@HVACGUY]

Thanks!

[@cwrowe]

Good video

[@chrisnapier5626]

Great job,Curtis!

[@HVACGUY]

Thanks!

[@iamnoone.]

Great video 📹 👍

[@HVACGUY]

Thanks 👍

[@greghughes9736]

Nice

[@Garth2011]

Temporary room A/C is all you can do for them if they are interested...Sad but its that time of year when contractors are super busy. The mobile home set up looks rather deteriorated...I'd install two returns if possible as those are noisy and rather inefficient with just the one at the blower. What a job those mobile homes are.

[@OnusBones]

The first you said was a 5T (on a trailer? Hmmm...) How big was the one you'll actually get to replace? That can't be cheap, especially as you'll probably need all-new refrigerant since you can't trust what it had. Does the warranty cover that too? Hope so...

[@HVACMAVERICK]

Am I the only tech that wears knee pads for each unit I service? (Boy, that came out wrong 🤦🏻‍♂️)

[@eco-solutionsllc4412]

5 ton on a trailer?

[@dock_yard1149]

Yeah thats nuts

[@Hvacnc]

Most I’ve seen here in Greensboro NC area is from 3-3.5

[@mrautoguy8419]

I was wondering the same thing

[@pilotboba]

The walls are probably r-1. :)

[@clarksafg]

lol..that must be quadruple wide trailer

[@VermontRed]

Enjoy your show, but, as a non-HVAC person, understand very little. Could you provide more explanation of the systems, what you are looking for on you iPhone readouts, etc.? Thank you.

[@Todestelzer]

The Titel isn’t how to diagnose a AC. It’s not a how to do things vid. Most of the AC guys filming their work do this to proof their work in case they get called out they did something wrong.

[@mrsmith5114]

Worst time for this to happen to them. Wish you tell us pricing :) Thanks 4 the videos though.

[@sir.cannabis1173]

Prices change while the video stays the same

[@bigscout1584]

Do you wave the diag fee when the repairs are done?

[@HVACGUY]

No

[@Dustin-zk8nb]

Only the bottom part of my evaporator coil gets get cold is that a compressor problem?

[@dock_yard1149]

Sounds like you lost most of your refrigerant.

[@Dustin-zk8nb]

@@dock_yard1149 no it's actually overcharged. That compressor doesn't have enough compression I'm gonna change it out

[@dmiestercommkitchentech3043]

Sounds like you have a flooded evaporator so no I would not say compression issue but would need to know a little more information like metering device, air flow CFM's because it could be a air flow issue motor spinning to slow, TXV feeding issue or possible over charge would need to know evap TD condenser TD superheat for fixed orifice or subcooling for TXV so no way to know with the little information you provided. The only way you can say it is a compression issue is by calculating CFM and being completely sure it is correct then completing a compression ratio test but if air flow is not correct the compression ratio will be squed

[@WSmith2024]

What causes the compressor to short out?

[@Deploracle]

Probably a short on the motor windings.

[@harryschrysan3183]

Too much heat on the compressor (that means high amperage draw and or the following :blocked condenser coil, low refrigerant charge, high refrigerant charge, liquid going back to the compressor, short cycling) those are what I can think at the top of my head.

[@Jon-hx7pe]

if the oil goes acidic from absorbing moisture, that could kill the windings - corrosion and short out.

[@dmiestercommkitchentech3043]

Exposed wire inside compressor which is a short due to the oil electricity flows thru the oil and causes current which inturn causes the short to get worse until it burns out the oil which pretty much burn the lubricant from the oil and a tech allowing it to continue to run in this condition until the complete system is contaminated by burnt sludge called acidic oil. Basically there are several factors that can cause a compressor to short out.

[@bbaaspencer1]

I work on hvac and never seen a capacitor so rusty!

[@Garth2011]

Very true but its an old one likely and if so, will probably keep on working long after a new one. Leave it be if the readings are in spec.

[@h2oman983]

"30 minutes later they called back and said they couldn't find anyone else" ... such a laughable about-face.

[@Garth2011]

Out where I live mobile homes are not as thrifty as they used to be. Space rent around here is averaging about $1,200 to $1,500 a month in addition to the utilities and cost of the home. $8,000 or so doesn't make a lot of sense to put into an old mobile home for 3 months of air conditioning. Everything these days is so far from reasonable priced when its related to income levels.

[@dennylang4165]

I believe the cap should have been an 80mfd not 60

[@MariosACandRefrigeration]

you are correct.

[@bobboscarato1313]

When in doubt call the distributor; with model of unit they can find out correct capacitor replacement!

[@moshemoshe-yy8hj]

Only if you have the original equipment if you change the fan motor for example you might need a different capacitor​@@bobboscarato1313

[@mediadaemon]

A 57K3 model calls for 80mfd but a 57KC model calls for 60mfd

[@bobboscarato1313]

@@moshemoshe-yy8hj: Very true, agreed!

[@BigDaddy_MRI]

First to enjoy your videos today!!

[@HVACGUY]

Thanks for tuning in and the bonus

[@Bryan-Hensley]

Ten dollars says the last one has no oil in the compressor.. it's trapped in the accumulator.

[@evilborg]

For guy that works on A/C's spends 90% time in the heat than in the cool.. how ironic.

[@stevee7774]

It’s a rough trade.

[@HVACMAVERICK]

But, it’s the best trade!

[@carlseiz1266]

If you don't know what your doing leave it alone

[@JesseDoesHVAC]

Poor client who cant afford, surely you can offer finance for repairs? It is a shame that rebates only apply to new systems

[@iamnoone.]

Curtis is into repairing air-conditioning and not in the banking business

[@mrsmith5114]

Then you gotta chase them if they don't pay? Was nice of him to do the free testing, but that's a big ask imo.

[@JesseDoesHVAC]

@@mrsmith5114 not if its the finance company issuing the money

[@alabamahvacprofessional2946]

Curtis, I have 37 years of experience in HVAC, and 32 years as an industrial electrician. I do not want to make you look bad in any way, but you need to be educated on electrical motors and resistance values to make them bad. When reading to ground from any winding on a compressor, any value higher than 1 megohm isn't a problem. You are replacing compressors when they don't need replacement. Sorry, for the negative comment, but this is simply the truth. I'm sure that your followers will have a problem with this, but they simply don't have my background. If any comment negatively, I will simply unsubscribe and go my way. That

[@HVACGUY]

There’s a reason for the difference. I’m testing with a 9V battery. Under load it’s much different. Even my megger doesn’t go below 20 Mohms, because anything less is considered bad. It’s just different under load.

[@Jon-hx7pe]

shouldn't it read infinity/open line if there's no problem?

[@alabamahvacprofessional2946]

​@@HVACGUY I am using a meter with a 9 volt battery as well. What I told you in my comment is the absolute truth.

[@dmiestercommkitchentech3043]

Then dude you need to hit the books again because if there is any reading to ground from a compressor terminal it means that the wire from that terminal inside the compressor to the motor winding has compromised insulation and it will cause more damage to the system if the compressor is not replaced; when you are reading resistance from ground to the terminal it is thru the oil in the compressor which means the oil is getting electrically fried which is how burn outs are caused. Ie...acid contaminated systems. No where is there a reading to ground on a compressor terminal that is acceptable it is a issue that if left to continue will get worse. So no the compressor did not need to be replaced immediately but it would need to be replaced sometime in the future which means there is no way to say how long it would continue to run if it died with in a month or so then Curtis would have been held responsible because he was the last tech to touch it. So Curt CYA I'd do the same thing and do I have 30yrs experience in commercial refrigeration and HVAC so you do you Curtis.

[@dmiestercommkitchentech3043]

​​​@@Jon-hx7peyes It should read infinite resistance if there is no problem but since he is reading resistance he is reading it thru the compressor oil. Now if it was a scroll Copeland had a service bulletin to warm the compressor up using the crankcase heater because they had a issue with the insulation of the motor windings having exposed wires in the compressor and heating the crankcase up allowed the oil to heat up and become a vapor which prevented the wires electrical current from flowing to ground and if it was not heated up then the breaker would trip this was mainly on start ups of new equipment not on equipment that has been running for any amount of time. The only reason the service flash was produced was because Copeland had way too many compressor failures that caused them to investigate the cause and since there was resistance to ground they had to honor every replaced compressor underwarranty they have since corrected the exposed wiring issue inside of scroll compressors. But they still said that the compressor replacements were warranted because of the resistance to ground period. The resistances were meggaohms which is why they recommended not using a meggar to check compressor windings to ground.

[@wildmanwv]

You need to get out of the "freon man" buisness and move more upscale brother