THE ICE CREAM IS MELTED IN THE FREEZER

[@nikodukkes1]

I had that shut off valve happen to me once, couldn't figure out why compressor went bad...after replacing compressor.....couldn't figure out were restriction was....took a 20 min break just to stop overthinking, I said let me check that valve stem and it was frontseated.....and I carry 20lbs C02 tanks with me, even when condenser looks clean I will blow it out to make sure especially on the summer months. BTW. I just found your channel. Yiur awesome, love your videos.

[@LorgCL]

I immediately recognized the location from the "tweakers" video. That video was the first video of yours the algorithm reccomended to me and since then I've watched every video you've released, some multiple times. Without exaggeration, your videos have made me the most knowledgeable tech at the last 3 companies I've worked for and nearly tripled my hourly rate as a result. I know you've stated many times that you initially began making these videos for your employees, and anything else was a byproduct, but you're literally out here changing lives and improving our industry every day. Keep up the good work. Best wishes from the East Coast!

[@demonknight7965]

@LorgCL I cant believe that was nearly 6 years ago. I need to see how long ive been following. Wonder if that could be considered stalking? 🤣

[@sherwinalvarez7365]

He did the same for me. Started in the pandemic.

[@stephanmetph]

LOL I recognized it also. Thirst thought was tweakers

[@HVACRVIDEOS]

That's so kind of you to say, thanks

[@masondeese5349]

@@HVACRVIDEOS same with me only been doing hvac for a year but your videos have helped me get more familiar with package units and want to start dabbling into refrigeration

[@richardhiskett5422]

You were fairly gentle with that twist timer. The cooks might have torqued that knob around hard against the stop and it might have stuck for a while until someone slammed the door hard enough to knock it loose. However it is very likely somebody left it turned off and won't confess to the manager due to the ruined ice cream.

[@loudnoise4690]

That isn't a bad idea since it is a mechanical device. Somewhat more likely, a cook noticed it was getting warmer, noticed that the timer was stuck, and turned it off. Problem solved. That would be something that the cook isn't likely to report. Unless you talked to the person who turned it off you would be unlikely to learn about it either.

[@throttlebottle5906]

or the kitchen was hot, ac not keeping up and they had the bright idea to prop freezer door open? that's the kind of "brainiac" thinking they do. 🤣

[@philltafolla]

If I had to guess that unit was off on “high head “ pressure had several calls during the heatwave. If you think about it call came in at 4pm bet that system was off since 12-1 pm or so when it was extremely hot . That peanut style high pressure could be weak could be opening up prematurely. I believe the tolerance is +/- 15% . The condenser being a bit dirty could have been the main culprit. Good video

[@HVACRVIDEOS]

That's a well stated possibility

[@loudnoise4690]

I have worked for the same software company for about 30 years as a support guy for a nav suite used by the US fishing fleet. I rarely go to the boats anymore, six or seven times a year, since my techs are well trained and very good. Anyway, about twice a year things turn out like they did here. I get there and everything works. I generally repeat everything my techs did just to make sure they didn't miss anything but, since everything is now working, don't find anything (nor did they, even when it wasn't working). And the problem does not return. I am nearing retirement. The joke within the industry (which is something of a small town), is that occasionally a specific installation of the software gets lonely and wants to make sure that I am still around :).

[@demonknight7965]

@loudnoise4690 not to scare you. But that just might be truer than you think. I've had computers that have started acting up. And i smack them, and they don't work right. I threaten to go get a hammer, and it straightens right out no more glitches. One time, i actually had to get said hammer, show it to computer, and say, "All right now, are you gonna quit acting up?" No more issues ever.

[@glennduxbury2568]

@@demonknight7965 LOL - but I sure know what you mean !😅

[@philmerrifield1163]

An intermittent problem is the hardest one to diagnose. Still, interesting issue but kinda screwy what the heck is going on. Great video brother

[@SombraLocs]

People don't understand how HVAC-R will always surprise you.

[@philmerrifield1163]

@@SombraLocs I'm never surprised at anything seen too much to be surprised anymore

[@HVACRVIDEOS]

Thanks bud

[@philmerrifield1163]

@@HVACRVIDEOS you're more than welcome dude

[@kingharry3260]

Had the same kind of call once. It took a few call backs before an employee on a smoke break ask me if I was there to fix the ac for the kitchen and told me the kitchen was getting so hot that they had to prop the freezer door open to cool it down.

[@natsaichigwada6104]

I love your videos man. Thorough checking is very important. Write on work order all you checked based on your knowledge as a Technician. We cannot fix what’s not broken and I hate this kind of calls😂

[@kens.3729]

A Great Reason to keep a Supply of Huge Straws in your Work Truck. 😬 To Slurp Down the Liquid Ice Cream. 👍

[@itsprimetime9865]

and shit sideways till tuesday

[@HVACRVIDEOS]

​@itsprimetime9865 lol truth

[@RWRefrigeration]

Great video. Thank you. 1st option: going off on high pressure cut out. 2nd option: the customer turning it off and forgetting about it. The defrost timer is suspicious as well.

[@ZeroStatic]

It would be really handy if these machines had a data logger in them. Thanks again Chris ❤

[@MindzEnt]

Some do, not all though.

[@HVACRVIDEOS]

Yes some do but most of the time the company doesn't want to make the investment

[@garrysalis4312]

I've been caught out a few times with condenser looking clear but that fine dust does cause high head pressure . Mainly on drink fridges for the big red company in Australia.

[@HVACRVIDEOS]

That's a good point

[@memyselfandifarmer]

Had a call late on a Friday, freezer warm. Evap iced, move it to defrost. Ice melted. Pressures good, as I was going in and out of the box, the door did not always close.the kitchen doesn’t have ac. Defrost timer was moving. Door closer BAD.

[@casketman14]

Had an issue similar to this last week. An outdoor freezer/cooler combo with a door on both sides and a door in the middle. When someone would go inside the freezer, the WIC door would open and stay cracked. Bad door closer….

[@andydepiazza2142]

As a new commercial refrigeration technician, I can’t tell you how much I appreciate you sharing your knowledge! Thanks for the great vids man! Keep up the good work!

[@HVACRVIDEOS]

Thanks bud I appreciate it

[@mattheww2797]

Intermittent problems are the absolute worst thing to troubleshoot, not an HVAC tech but a former tv repair person and I feel your pain when someone says it wasn't working when I called you

[@Nyarly_Relyeh]

"knock a tv set in the right spot and it works. Not here, but near this spot" Once I had bad caps and cracked soldering points it my cheap tv unit. It took me a lot of time (s) to catch all the bugs by manufacturer (85C caps instead 105C lowESR, and etc). I had to disassemble it 4 times to fix it all. And Im an electrician, not a repair man.

[@HVACRVIDEOS]

Hard to fix a problem we don't see

[@bradwilmot5066]

I don't know if you noticed, but when you pumped the system down, the right hand fan stopped well before the left one. @ about 6:30 Fan motor going off on thermal taking the head pressure through the roof?

[@itsprimetime9865]

no

[@helmsajr]

Great job Chris. I think Defrost timer hanging up sometimes just saying.

[@garypoplin4599]

4:41 - From what I’ve seen and heard so far here, I suspect burned contacts in the contactor causing the condenser to run intermittently. 25:20 - You didn’t measure a voltage drop across the contactor, so the contactor obviously was _not_ the issue. This was a stumper, I agree.

[@sherwinalvarez7365]

I attest to that discharge valve. In my 3rd year, I chased that down mistakenly. As soon as I took the cap off, I saw it. It was the last thing to check because I found no other reason I was banging off on HP.

[@lukerobinson4152]

i think the door was left open for hours, then at 4 o clock "quick! close that door the manager is here!"

[@HVACRVIDEOS]

Right on

[@flyinghigh5531]

Going through the sequence of operation several times is the best way to find an intermittent problem in my opinion. Make it an equation, add in the problem factors, and time of day. Sometimes it’s as simple as we think but we as techs need confirmation to stamp our name on a conclusion.

[@HVACRVIDEOS]

I call it concrete validation

[@GeminiSeven43]

Also the condenser coil has restricted airflow being up against the other piece of equipment that has a hot metal surface radiating heat and preheating the incoming air. Great job and video for those oddball ones that make you crazy.

[@HVACRVIDEOS]

Thanks bud

[@nickwalston1322]

I remember you rebuilding that box after they stole the reefer.

[@themilitantvegan2515]

When in doubt, clean the condenser

[@HVACRVIDEOS]

Darn right, that's the only way you know if it's really clean

[@zekenzy6486]

Great video. Thank you for sharing

[@HVACRVIDEOS]

Thanks for watching

[@clevilee]

Maybe check the headmaster to see if it is slightly bypassing? Ive seen them fail intermittently. Great video!

[@davidhu4009]

You just real kill your friend there! LOL

[@HVACRVIDEOS]

Ummm, yes

[@firegamingclan3466]

Wasnt that the Unit were tweakers once ripped the lines out? Looks familiar

[@DANGERTIM112]

i recognise the wall behind it yes

[@Jason-wc3fh]

Did you not watch this video? Obviously you watched the other one. He clearly says it is and that's why it has the suction drier.

[@Bobherry]

I thought I had seen that unit too

[@Bobherry]

It was originally posted feb 28th 2021. kzbin.info/www/bejne/bafCi2pvf7eAaKM

[@HVACRVIDEOS]

Yes

[@jasonjohnsonHVAC]

All you can do is your best. You were detailed in your analysis. You gave the customer their money's worth....sometimes it goes this way. You were given second hand information from someone who wasn't there to witness it....case closed

[@HVACRVIDEOS]

Thanks bud

[@wanderinguser7665]

Intermittent problems are the worst! I'm an IT guy so pardon me if this is a stupid HVAC question, but does there exist such a thing as data logging HVAC gauges/probes? Something that could monitor temperatures, pressures, and other system variables over time & record the values periodically for later review?

[@ishkabibble-oj1oi]

When I was in trade school there were control board makers that would come in and show us boards that transmitted diagnostic information to an app but I don't know if any companies adopted them, I haven't seen any in the field yet.

[@throttlebottle5906]

there's very expensive add-ons and gear that can monitor and data log it all. but nobody wants to pay for it and portable gear would have to be left outside connected, which means it would be stolen quickly.

[@HVACRVIDEOS]

​@throttlebottle5906 good point, I believe some larger food manufacturers and even grocery chains have data logging equipment hooked in with their Building Automation and Energy management systems

[@lakhwindermaan8309]

Yes its called K2Therm Expensive to set up whole thing

[@mynamesdan2164]

Always have a hard time leaving a job after checking every single parts operation and finding no obvious reason as to why it wasn't working. A lot of times though there is not a call back... what does that tell you? 😅

[@HVACRVIDEOS]

Ghosts is what it is

[@natepeterson7145]

Hasn't been working all day but decides to call on overtime. I would definitely be fixing it 100% no tie overs. Opening supply house to get what's needed. JK I would be so mad though. 😫

[@Transit_Biker]

Looks like a tad undersized for that kinda hot weather. Of course, user error can bypass the best equipment's ability to cool!

[@PALMERHANSEN1]

No quality integrity tradition? 🥺🥺

[@keithpeterson751]

They probably left the breaker off or the high pressure switch theory sounds plausible

[@wayneyates9264]

Curious how many instruments you are employing for your diagnostics on this unit?

[@kat2641]

Possible causes? They cranked the inside timer too hard an it stuck for a few hours Also I have seen condenser motors overheat an cause the compressor to shut down on high pressure lock out all due to the extreme outside temperature. 115 degree air temp + the sun rays cooking on the box? Plus a 10~15% condenser coil dusty would definitely cause the unit to shutdown on high pressure .BUT ! Even all that the unit would still cycle on an off keeping the box at or near 30~32..but on them outside boxes they are not known to hold -20 very long even if the door is kept shut. This is a tuff one to call but considering how dirty it rinse out?( even tho through the camera the coil looked clean.) I am going to say: unusual high air temperature + what I would call a dusty coil Causing a restrictive airflow over the condenser fans = over temp an higher ohms resistance on the motor windings Causing both condenser fans to kick out on over heat which in return will cause the compressor to kick out on high pressure.. one thing many Tecks over look is how Truly important ohms resistance is involved in current draw.. you did everything by the numbers that was videoed. However, I may have missed it, but I do not remember seeing you check the run caps. You may have did it off camera too. 🤷🏻‍♂️ from experience I can tell you hotter environments than a run cap is designed for Will create higher oms resistance, thereby weakening the capacity of the run cap. An that too can cause them open condenser motors to overheat. the only thing I would’ve done differently than you did would’ve been to check the run caps I rarely ever give any criticism if you did check the run cap. I apologize in advance.😊 but this one is a text book head banger !! I’m blessed to have had A childhood growing up with dad as HVAC an then 5 years as a lineman then 15 as an electrician before having to haft to take over for Dad an? Lol I just decided I love HVAC more than an electrician ( HVAC? Every day is different. Being an electrician? Every day is the same.) so while I am NOT bragging here. Just trying to explain why I base my opinion on resistance and ohms law playing in a very important factor from my past experience… but I agree with you it was a heat related issue in just that unit and with a delivery that day the load on the unit unit would increased at least 20 if not 30% temporarily…

[@tmacgee1234]

i thought it was the tweaker unit when i saw the abandoned pressure switch lol.

[@Jamie.W]

We get calls from homeless turning disconnect off.

[@HVACRVIDEOS]

I don't have that issue to often

[@jo6520]

Could it be a clogged TXV? You said the pressures were coming up slower than usual.

[@HVACRVIDEOS]

I think I'll discuss this a bit further on this Mondays live stream, tune in

[@750kv8]

Now here's one small thing I don't understand. Why the condenser fans shut down during pumpdown? As far as I can tell fans running during pumpdown would make the compressor work easier and more efficiently as it would reduce the back pressure somewhat.

[@HVACRVIDEOS]

I think in a properly functioning system the pump down process is so quick that keeping the fans on wouldn't do to much, but I do understand your point.

[@keenanwalker6597]

Haha your “doneski bro” 😂

[@cthomas1864]

Why is the freezer condensing unit smaller than the cooler unit shouldn't it be the other way around?

[@throttlebottle5906]

smaller freezer, larger cooler?

[@HVACRVIDEOS]

Tune into the Monday night live stream, I'll try and touch on this topic a bit

[@ElamigodelHVACR1]

Hey is that Copeland app you use to check compressors free ? Love the videos man I’ve been learning more in depth about every I’ve only been on the field for 3 years I appreciate it 🙏

[@HVACRVIDEOS]

Yes it’s free

[@andrewfowler8687]

A good test would be to block the condenser or disconnect the condenser fan motors and find out what pressure the high pressure switch trips out at.

[@HVACRVIDEOS]

That's a good point

[@classicaliclastic]

Synth intro is back, and it slaps 😎🪗🎛️🔊🥁

[@HVACRVIDEOS]

Bang

[@MrTotos2012]

The fan on the outside of the right side has less spin 6:31

[@AIM54A]

I bet they had a long delivery and someone wedged the timer so they didn't have to keep twisting it.

[@HVACRVIDEOS]

That seems to be the consensus

[@halverde6373]

A dragging timer.

[@dannywalsh840]

Thought that place looked familiar

[@bobby2x472]

Why adjust the TXV instead of adjusting the pressure first? How do you know to adjust the TXV before pressure?

[@HVACRVIDEOS]

I will discuss this on my livestream this evening 9/23/24 @ 5:PM (pacific) on KZbin come on over and check it out kzbin.info6y0IbCY-L40

[@seagullsbtn]

Was there a power outage early in the day or spike that shut the system down until reset by the delivery?

[@HVACRVIDEOS]

Not that I know of

[@stephennichols4815]

30 degree box temp and Operating normal now sounds like moisture froze in the TXV when ox temperature comes up the moisture thawed and it started operating again and the dryer will release moisture when heated high ambient temperature and dirty condenser . Use to chase moisture around new grocery store racks sometimes

[@throttlebottle5906]

sounds like the dryers were very overdue for replacement and of course who kept letting in all the moisture before hand?

[@HVACRVIDEOS]

That's a possibility

[@EdwardOrozco12]

Dang. It sucks when the unit is working when you get there 😂.

[@HVACRVIDEOS]

It doesn't make it easy to fi the "problem" that's for sure

[@EdwardOrozco12]

True

[@davidsanders6957]

Interesting......

[@johnwalker890]

Maybe you should have checked the sub cooling and super heat on the ice cream it's self, just kidding, good job Chris........

[@HVACRVIDEOS]

Lol, could we use ice cream in its liquid form as a refrigerant? Hmmmmm,, tasty

[@johnwalker890]

@@HVACRVIDEOS Check your ice cream pressures........

[@wtfux]

Would you consider a longer timer?

[@HVACRVIDEOS]

Possibly

[@smithno41]

I'd blame the defrost timer.

[@HVACRVIDEOS]

I can get behind that idea, they're easy to blame

[@carter608]

Im going to go with high outdoor ambient temperature causing it to shut off

[@JamesTK]

Zulu time (UTC) is the one true timezone

[@sissy1234hhh]

when things get to hot, things become temperature sensitive.

[@HVACRVIDEOS]

Sounds like science to me

[@raymondsvoboda4175]

You did a lot of great diagnosis and verification in this video. But never watched to see if the box pulled below zero or checked evaporator superheat? Maybe you did and it just didn’t show it? Could it be as simple as box doesn’t drop below zero to hold the ice cream?

[@petermichaelgreen]

He talks in Farenheit, the temps he was mentioning were well below freezing.

[@raymondsvoboda4175]

@@petermichaelgreen yeah I don’t know about that . All the national accounts I service the ice cream freezers alarm out at 2 degrees. That being said I’m not entirely sure it was overlooked, probably just not included in the video.

[@davidmorrow6571]

@@petermichaelgreenice cream goes liquid at 15-20 F. Well below freezing, but not cold enough for ice cream.

[@crperformancetucker5065]

I think it's crazy that your utility lets your voltage drop so low. We would be paying for all kinds of equipment if we let our voltage drop low and burn things up in my area.

[@paulgirard3093]

Funny title ^^

[@suezq74]

Why is the evaporator powered from the condenser? - Riley

[@MarkAtwood0430]

The manufacturer installs the defrost clock inside of the condensing unit. Line voltage from the condenser powers the clock. Based on how the clock is programmed, it tells the evaporator whether it's time to freeze or time to defrost by sending voltage to either the freeze or defrost circuits at the evaporator.

[@richardhiskett5422]

It's the cheaper way to power the evaporator. You only need one breaker position in the electrical panel, unless you have a QRC system where the manufacturer wants dedicated power to the evaporator only. From the condenser, Two wires to the heaters and three wires for the rest of the evap unless the solenoid valve is at the condenser, which is two for evaporator power to the fans and controller/thermostat and a defrost termination.

[@suezq74]

@@richardhiskett5422 I hate R22. - Riley

[@Thomas-lq1jw]

Pretty normal procedure as long as the evap has no fancy controller as far as I learned on this channel

[@suezq74]

@@MarkAtwood0430 Defrost clocks can be unreliable especially when it’s changing from daylight savings to standard time or vice versa! Ice sensors are not time based. - Riley

[@LtKernelPanic]

$10 says they turned it off and forgot to turn it on until they found the melted ice cream and nobody wanted to fess up to it. If they keep turning off the disconnect is there a way you can put one of those tamper seals like they use on fire extinguishers on it? They break with only a couple pounds of force so it can be operated in an emergency but obvious that it had been.

[@HVACRVIDEOS]

That's a possibility as well, wouldn't be the first time a walkin was turned off for cleaning or inventory then forgotten to be powered back on

[@stephennichols4815]

You fixed the problem by cleaning the condenser the moisture is back i. The dryer next time its that hot a condenser is dirty again in a couple years probably do same thing you can cause high head. Pressure and high liquid line temperature by blocking the condenser coil and see if it happens again a day or two later just a possibility. Then you commented on why suction line dryer was on unit explaining how moisture possibly got there

[@HVACRVIDEOS]

That's a valid point

[@davidcollins9791]

I think that it was low on gas

[@demonknight7965]

Wouldn't the time clock be wrong if they had the power shut off to the unit?

[@HVACRVIDEOS]

Good point, I'm going to mention this tomorrow on the Monday night live stream

[@wilcleno1866]

Okay remember to go to the merch store and help Chris and his channel. It's only 97 days until Christmas 🎄🎄. Get your gifts and stocking stuffers while supply's last. ( I'm just a Christmas lover)

[@HVACRVIDEOS]

Lol, thanks

[@littlejoe1st]

Ahhh the music is back ...

[@HVACRVIDEOS]

Boom

[@raydoactive]

“…And the sight glass is clear!” 🫡

[@ivoryjohnson4662]

Do the HVAC Techs ever think about specing units like they use in Saudi Arabia? Maybe they could keep up with the heat?

[@HVACRVIDEOS]

I've thought about it but haven't really dig into the feasibility of that idea

[@ivoryjohnson4662]

@@HVACRVIDEOS figured everything is on Google lol

[@jeffhurckes190]

Chris from the future, talking about coming out of covid 5-6 years ago.

[@inothome]

Right? lol We'll have to revisit this comment in another 2 or 3 years or so. Unit start up date was 3-4-20. All good........ Honestly, It does feel like forever ago and all that though.

[@HVACRVIDEOS]

Lol

[@fredlendzian7082]

do u charge the customer when you cant figure out the problem

[@HVACRVIDEOS]

Yep

[@michelbrown1060]

forgot to close the door properly ? ?

[@HVACRVIDEOS]

Possibly

[@accord91ex]

Still like this intro better 😆

[@HVACRVIDEOS]

Thanks

[@turnerg]

Queue all the people complaining about the perfectly fine intro 🙄

[@HVACRVIDEOS]

Lol

[@thephantom1492]

Turn past 5. Someone didn't. Someone later on did. Problem fixed.

[@HVACRVIDEOS]

Lol

[@papichulo1589]

Are you hiring sir ?

[@zerocool46]

The cooks probably left the door open all day

[@Thomas-lq1jw]

But shouldn't the coil be iced up then?

[@daviddrennan1041]

They created the fault to then justify mrchanical failure resulting in product failure to then claim insurance....just saying...

[@HVACRVIDEOS]

That's a sneaky plan

[@Hunter-vl6ft]

They left the door open

[@WalkleyRonald]

609 Davis Views

[@HVACRVIDEOS]

Awesomeness

[@davidathey7903]

You are a devil to detail. Your customers are lucky to have you.

[@HVACRVIDEOS]

Thanks bud

[@steveblake8766]

915 thumbs up

[@HVACRVIDEOS]

That's alot of thumbs

[@wastelander69]

I don't like your intro I prefer the old one with your voice over cheers

[@HVACRVIDEOS]

It will be back, I promise

[@auym4432]

The titles are dreadful go back to your original

[@HVACRVIDEOS]

I will, eventually

[@russellhltn1396]

6:30 I noticed the fan on the left kept running for quite some time after the one on the right stopped. High heat, dirty condenser, and a fan that's starting to slow?

[@HVACRVIDEOS]

That's a good point

[@Colt-wr6wx]

I call it detective refrigeration.. its a pain and the workers don't help when they lie about leaving doors open etc.. like help me help you! Please... ridiculous

[@HVACRVIDEOS]

I've never heard it put that way before, "defective refrigation"

[@Colt-wr6wx]

@HVACRVIDEOS yeah I picked that one up along the way somewhere.. lol