I DID EVERYTHING I COULD
This was a confusing one for me because I never found the problem, but was there ever really an actual problem at all?
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Until my barber retired I had been going to him for about 40 years. One day we were in conversation and I totally forgot to pay him. When I went to leave he said: "Hey bud, can you check that I gave you the correct change?" That's when I learned that's there's sometimes a better way to phrase things.
Well said
Used to do network support over the phone. Instead of saying “are you sure the cable is plugged in?” We would say “could you unplug both sides of the cable, flip it around, and plug it back in?” Simple way to not call the customer an idiot yet still get them to check. :)
@@stazeII Except with me, I'd think you didn't know what you're doing and ask for someone else.
@@misterhat5823 oh, me too if some told me that. Lol.
We never leave the door open we put a sign on it. "Keep door closed" Said every manager.
Cooks can fix anything with a garbage bag 😂
One way to cut down on Nuisance Calls is to install an Alarm on the freezer doors that screams like a Banshee with it's Gonads caught in an Industrial 100 Ton Press whenever the door is open for more than 45 seconds...wire the Alarm in series with the Compressor Controls so if they disable the Alarm, the Freezer stops working and they'll quickly learn to stop propping the damn doors open... 😄😁😆😅😂🤣
no idea why I like your content so much - I'm literally not an HVAC employee, no real idea on the exact ways this all works, but I found your channel one day back in 2017 or 2018 I think looking for reasons to why the walk in freezer at the McDonald's I was working at kept breaking and being high on temp, and we had to throw things out not once, but THREE times in a few months, anyway, found you back then, your videos actually helped me and my case for management as to why they were the problem leaving the door open all the time amongst other things... so thanks for that. I still watch to this day because I find you interesting, and I learn so much random information about HVAC stuff, that is useless to me, as I'm obviously not a professional lmao but hey, what the heck. Great content. I use the "Big Picture" idea in my whole life man.
Thanks for watching
my boy was straight chillin LOL 11:30
Being thorough like this is critical for customer relations too. You're not telling them they are an idiot or pound sand. You triple check everything and guide them to a relatable answer.
dont tell customers to pound sand, tell them to touch grass.
3:45 You've been in Southern California for so long you forgot that "Spring" is a whole season and not just a "weird phase." :)
🤣🤣🤣
As someone from Pennsylvania, what are seasons? We have all the weather all the time.
Nobody wants to hire an electrician. They just expect you to take care of it 😂
been on a HVAC video kick lately, stumbled upon your channel, and man you are the real deal. Very knowlegdable, detail oriented, love how you go thru the process and explain to the audience what and why you are doing what you do step by step. For someone like myself just getting in to the trade this is very helpful! thank you, and I am definitely checking out more of your video's! very informative
Thanks, I really appreciate that
“Ma’am I’m sorry, I did everything I could including using two capacitors at once, but your walk-in freezer is dead. I’m sorry.”
Why screw the top on when a cinder-block will do! ;=)
Cinder block. That a techs seat.
As an IT worker, the way you and I do things often overlaps, in this case, knowing the environment. We had an issue where one of our customer servers would go offline every night at the same time. After a few days of investigation, we figured out the cleaner was coming in and unplugging the Server to use the power for their vacuum. Eventually, we figured it out by speaking to the customer and finding out what happened around that time (and having the customer stay back to check haha).
I completely agree with your logic Chris. I definitely think they left the door open, and that’s what caused the high box temp. Thanks for sharing! 👍🏻👍🏻👍🏻
Your theory makes a lot of sense. Delivery day, recent defrost cycle, reliance on the in-door digital thermometer for temperature readings (and you are 100% right about health departments REQUIRING a second - preferably analog - thermometer in all walk-ins) and the likelihood of the door being propped open as the product is put away (and, hopefully, rotated to adhere to FIFO: First In, First Out, which takes some time). That's why I love the "Big Red Button" when it comes to working in the cooler for extended times. You also made a distinction between air temp in the box and product temperature - and this is somewhat of a Big Deal to pay attention to. It's easy for the untrained to see a high-temp problem and get on the horn right away to get a tech in there, when it's entirely possible the box just happened to be in Defrost and will return to normal operation shortly. In that time, the product remains at a safe storage temperature, because the box is only warm for a brief interval, not long enough to warm up the product. I actually caught that at work once, a then-new Crew Member came up to me concerned because the walk-in cooler was at 43°F (as seen from the digital thermometer by the door). Always a teachable moment, right? First thing I did was praise him for thinking about temps in the first place and noticing it, because it was critical to the health of our customers - and ourselves, since we're allowed free meals on shift. (Always start out with the positive, Mary Poppins wasn't wrong when she sang "A Teaspoon of Sugar Makes The Medicine Go Down.") Then I taught him not to rely on the door thermometer for accuracy, always double-check the analog thermometer hanging from the shelving. (Then I showed him the sensor bulb, which is mounted inside the box inches away from the door opening, at the same height as the door handle, and how warm air from a not-fully closed door or product/hands touching the sensor affects its reading.) Then, if the analog thermo was above 40°F, we were to take the digital food thermo and check the temperature of two different products, one in the middle of the box, one towards the rear wall of the box. If those temperatures were too high, THEN it was time to be concerned. To further educate, I showed him that the evaporator fan wasn't running, and then pointed to our vintage 1990s walk-in controller box (I forget the brand). It has a two-line LCD dot-matrix display that scrolls through both boxes' running states, air temperatures, humidity levels, and compressor load. "Cooler #1" was showing "Defrost," so slightly higher temperatures during this mode was not necessarily anything to be concerned about, provided we made a mental note to come back in about 15-20 minutes to check that it had resumed normal operation and the temperature was lowering. Finally, I praised him again for observing and bringing it to my attention, because I've found it's always a great idea to come back around and end things on a positive note. He's somewhat tech-savvy, so I felt comfortable going that deep down the rabbit hole with him. He's one of the two people I close with at the store, so I'd kinda like him to know a good chunk of what I know because, as Schoolhouse Rock said, "Knowledge is Power!"
Here’s my (Riley’s) knowledge on HVACR for those who are interested (as a 13yr old as of 2024) 1. Short Cycling: Short cycling is where a system turns on and off too quickly 2. Pump Down: a pump down is where the refrigerant is moved to the receiver or condenser coil 3. Metering Devices: I know many metering device types, like the Thermostatic Expansion Valve (TXV) and Fixed Orifice 4. Refrigerant: I know R22, R410A, R407C, R404A, R134A and R32 5. Suction/Discharge: where the refrigerant goes into the outdoor unit compressor, and Discharge is where the refrigerant leaves the outdoor 6. Liquid Slugging: Liquid slugging is where the compressor gets liquid no vapour which can destroy the compressor Correct me on any of them if i’m wrong. Kind regards, Riley.
Good job young man.
Are you an HVAC technician? - Riley
Yes hvac and refrigeration.
Sometimes it is that simple. You did everything you could to disprove that theory. I tend to do the same thing...if I think it's X...I'll try to prove that wrong...if I can't, I know I'm correct. You did everything you were supposed to and provided quality and value. Thanks for the video Chris
Thanks for watching
that's literally how science works: falsefiability. if it can't be falsefied it's pseudo-science :D
Weird season? Stirlitz went for mushrooms... He wandered and wandered, but found nothing. “It’s not the season,” concluded Stirlitz and sat down in a snowdrift. (russian joke)
The Heatcraft QRC board has a large capacitor to allow the board to fully close the EEV in case of power failure. I wonder if yours didn't close, and allowed pressures to equalize? That could have caused the flooded start once power was restored. This is mentioned under Power Failures on pg18 of the QRC iom manual
0:20: ⚙️ Maintenance check on walk-in freezer reveals possible door left open causing soft ice cream and no frost on coil. 4:20: ⚙️ Identification of liquid level and potential leak in refrigerant system. 8:13: ⚙️ Analysis of refrigerant system shutdown due to unknown cause and troubleshooting process. 12:47: ⚠️ Realization of missing independent power source for evaporator coils poses potential voltage drop issues. 16:16: ⚙️ Equipment maintenance and troubleshooting follow-up for ice cream machine. 19:59: 💬 Effective communication strategies in troubleshooting customer service issues. 22:50: ⚙️ Efforts to resolve equipment issue and follow-up on customer satisfaction. Tammy AI: Get video info faster & better
Very disappointed in this comment.
I’ll bet my last dollar it’s the same thing I always run into … “” Oh Nooooo. We never ever leave the door open or cracked open 😂😂😂 after the 3rd trip a unit was running great?? Installed a door switch monitor 😁 an?? 2 weeks later? A call back again an guess what the print out showed? YEP door was CLEARLY left open. 😂😂😂 print out showed times open and the length open.. grinning the manager said wow I guess we are wrong and we owe you for the service calls… 😊
4:11 Learn something new everyday. Thanks
it looks like the contactor is original,the cond, capacitors are always week,testing the HPS and the temp limit,is a bit complicated.but it was probably the door.but they always know their systems.the compressor sounded a bit dry.check the breaker for finger prints,LOL.
Heatcraft says those boards need more than 24 volts like 26 to 27. The transformer on the evaporate (right side) probably needs to be tapped to 208 and not 240.
Just bought 2 of the VC2s at Supply House for $115 each. Thanks for the reminder to get!
Happens to the best of us lol I was thinking didnt he pump it down to check the liquid level? Im pretty sure he turned it off and he's definitely working on a WIF 🤣
Temp clamps on each side of the drier will tell you if there is a pressure drop 🤘. Love your videos and how thorough you are on each job. That's the difference between a good tech and a great tech. Nice work!
So you can’t use the temp drop method on suction driers only on liquid driers , the refrigerant needs to change state in order for the temp to drop and a suction drier only has vapor going to it so it’s not going to change state
@HVACRVIDEOS a restriction would still cause a pressure drop despite the refrigerant state, and pressure = temp, so wouldn't it still be measurable with temp clamps? Honestly, I've never tried it on a suction line drier. So now I'm curious about it. I've always just removed them to prevent the inevitable problems it will cause down the road. Anyway I appreciate you letting me pick your brain 🧠
@@life_behind_bars I believe you are correct
@@life_behind_bars Don't think the temperature drop method will work with suction line driers. The reason it works with liquid line driers is when they get sufficiently restricted they start working like a txv. Also I think if you had sufficient subcooling you could still have a slightly restricted liquid line drier and still not have a temperature drop, best method if there are access points is take actual pressure readings.
@heavydiesel I'm thinking about setting up an experiment here in the shop (when I get time). By putting a valve on the suction line with pressure taps on both sides so I can throttle the valve down until I get a pressure drop and then test temps on both sides of the valve and see what happens. Seems like fun and educational. I know I'm a party animal!
What about a voltage drop over night? Only on one side of the main I've seen this happen at a water well's site before you'll have say lights will work but no voltage to the other side it'll take it down to 110 only not the full 220
Dang that thermal imaging camera is like 2500 lol.
You done everything you could dude. You got a customer that's bull-headed and refuses to keep that damned door shut. Recommend that they put a self-closing mechanism on the door and keep beating it into their thick skulls they can not keep that door propped open. That leak imposed a imbalance in a blend refrigerant system now. You'll need to recover, put a deep vacuum in the system, and a VIRGIN charge to restore service. These hyper-efficient systems can't handle a blend imbalance.
that video title makes me think of team fortress 2 one of the voice lines that the spy has is "I did what I could"
I vote to have the sporlan ad then the merch ad.. It's just not right the way it is lol
I hate electronic evaporators those computers are always a pain when servicing and cycling power.. but yeah without independent power it's even more fun.. 👍🤭
Good job Chris.....
Excellent troubleshooting
Thanks bud
Another great video as always. Thank you for sharing. is it if any unit have QRC board they will not have defrost clock ?
Great job Chris has always.
Thanks
Since this is an exception, maybe put a sticker on/near the QRC indicating it is roof powered? Also, is there something specific to the design of the discharge valve that causes shraders to go bad?
“Thorough” is Most Definitely your Middle Name. WOWsers! 👍🙏
Thanks
check temperature drop across the dryer
Maybe install a door sensor
If the power to the evap is connected to its own condenser unit, what if the power is rarely and intermittently being cut or something along those lines?
@3:43 is it just me or is the liquid line to the compressor frosted over?
You pumped it down then turned it off for sometime so it seems the board registered that and it went into pump down then recycled back on Seems about it to me Heatcraft works that way unless they have an independent power to the evaporator otherwise u reset when off Worked on endless so I figured as soon as you mentioned it was off
Chris, I notice a valve on the inlet end of the filter on the suction line. Would that have given you any indication of pressure drop between it and the valve that was a few inches after the outlet end of the filter?
I noticed that too
What should be the temperature of an ice cream freezer? I thought it should be between -10°F and -20°F. What temperature do places set it at? Thanks.
Usually-10 is spot on
Wow I like the snazzy new intro
wasn't there a service port/valve on the suction line that would have let you check the pressure drop across the suction line filter dryer? (along with the other port between the suction line dryer and the compressor)
Ill dig into this a bit more on next weeks live stream
God bless you
You need to add a new hat to your merch! It'll be plaid, with a bill in the front AND the back! Black underbill of course. A Sherlock Holmes hat with HVACR on it! Big magnifying glass that says hvacr vidoes on the handle!😁😎 Another Great Adventure!!
Hmmm, let me run that by my marketing team and see what he says
Is this the same one that had the slow leak 6 months ago and was going to be replaced?
Ha. Door left open for delivery. Possibly turned the fans off because it “gets too cold…”
Also that port leaks on every single one I service. All my truck stops have that same set up.
i can tell the vibration pretty bad on camera
You say you’d love to check pressure drop across the drier. You have a thermal camera. Since pressure and temperature are interdependent can’t you use the thermal camera?
Thats a good point, Im going to talk about that idea on this weeks live stream
When you get a chance can you describe the functions of the dtc valve, maybe you can explain it better than I can I can use your explanation to these guys I work with because I tell them it shoot liquid to the head to cool the discharge temp. But they get lost
Hey Freon- for sure ill talk about this a bit more on next weeks live stream
Question: can QRC boards be firmware updated with a PC based software?
Good question, I'll add that to my list of topics to discuss on next week's live stream
Why is there not a door open sensor that puts the system into pause?
Because whoever did the original install, never installed one. Just because the technician wants to install it, doesn't mean the customer wants to pay for something like that.
@@jin8684exactly
hello down south
Are you not concerned with the suction drier rusting - won't it cause leaks in the future?
Thats an excellent question, ill discuss that a bit more on this weeks live stream
never believe the customer... is rule 1 chris :) yes they can give you information, but if they insist 'this did not happen', it did
True
Always go old school when you can!
ID10T issue with client.
open doors put kids thru college.
😂
Just like Chrysler and GM puts mechanic's kids through college.
Did you yell clear and try using a defibrillator😅
I'll try that next time
770 thumbs up
👍❄️💪🇺🇸
Man those new fieldpiece core tools are sweet. The price isn't tho lol
All electromechanical boards are garbage . KISS!
I work on becon 2 systems from time to time. I hate them with a passion...
I was like 420 🤤