HVAC Refrigeration: Walk In Cooler down and wired incorrectly.
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- Опубликовано: 6 окт 2024
- How to wire defrost heaters on a walk in cooler freezer. DTFD fan delay and heater limit switch bypassed on evaporator coil. Bad A19 thermostat, WIC down . Walk in cooler with multiple issues.
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I live here in LA for the last 5 years and when I need to learn new concepts I can learn it much better in spanish (my first language) I don't know how but if you find the way to make bilingual videos or you create a second channel I will subscribe for sure. I do AC for 4 years and refrigeration for 1 ½ years both commercial and always try to learn more and more. But I know I could be better if I learn it in spanish, unfortunately I came to late when I was 30. Gracias hermano! Sos muy buen técnico
"Yes, our cooler is too hot."
Well that's because it's not a cooler. It's wired up to be a sauna.
LMAO. Very true.
lol
What's up bro, hey I'm a rookie refrigeration tech too, plenty of commercial HVAC tho... My question to you is, if that is a medium temp box, do they really need a electric defrost? Could you not just take that out for the time being untill you troubleshoot the DTFD and high limit safety and let it do a off-cycle air defrost?
Thanks for getting in the RUclips game and making these videos, they really help newbie techs like me!!
matt scott well, it doesn’t NEED electric defrost but that’s the way the customer has it, so we don’t want to start yanking stuff off of it. It’s a lot easier to just fix it properly and normally we would do that on the spot. This customer however, likes to get a diagnosis first and then they approve the work. A lot of the time, we just have to play by the customers rules.
Rookie Refrigeration You are so right. I have a few questions I’d really like to run by you if you would take time to email me. My email is: proceb995@gmail.com. I sent you this one because I look but don’t pay too close attention to them. Just subject it “major HVACR questions”. And thank you in advance
Rookie Refrigeration sorry. That email is priceb995@gmail.com
Wouldn't the customer be complaining with that issue it would have never worked
Usually coolers dont need defrost heater, fans run 24\7
Yeah, I still don’t know why this was installed this way but we just leave it as it is unless it causes problems.
Maybe because it was a freezer in the past
Have to watch the wiring parts of RR's video once again with that in mind.
You are doing a GOOD JOB showing and representing the HVAC/Refrigeration Industry.... Showing the Good, Badd and Ugly... There are so many different avenues one can choose when you come into this field...
I myself do the same job you are doing in Atlanta, Ga... We take care of Publix, Kroger, Save Alots, primarily.... That on call is a bitch, but part of the job.... But I always recommend people that ask me about the field togo into Refrigeration because you going to do Air Conditioning also....
Exactly. Very well put. Thank you bro.
Camera can be a little misleading but that box seemed so tiny for that unit🤷♂️😂 Nice videos sir👍
Thanks. Appreciate you watching
Lol you know it’s hot in a cooler when camera is fogging up, great video
Thanks bro
Great Detail TroubleShooting Video....
Enjoyed it....
Martin Woods thanks bro.
Thanks for upload. Enjoyed your troubleshooting breakdown.
Thanks bro. And thank you for watching..
thumbs up good explanations once again Electrical and mechanical
Thanks bro
What a mess to untangle. You ran out of time or would have fixed it all, I'm sure. Thanks for sharing
Condenser on roof for coolers had timers, no heaters. So was it suppose to air defrost? Managers complaining the box temp would rise at various times . I remove time clocks from circuit and have not had a problem for 16yrs. Fans run constant . Temps always perfect.
Yup. I have no idea why this was installed this way. We just made it as good as possible. I wasn’t about to start tearing stuff out lol
Rookie Refrigeration, just wondering. If you would have just disconnected all heaters and left fans powered up to run continuously, could that have done it as the complete fix? The defrost timer is working correctly, or maybe could have added or taken off some time.
Mario Morua yes. I could have just made it off cycle defrost. But this is what the customer wanted. We just have to recommend and do what’s needed
Rookie Refrigeration 10-4
Great diagnostics.
please explain to me how a freezer would be a walk in cooler? If you want to convert to a walk in freezer to cooler, remove the defrost heaters and timeclock. Have the evap fans to run all of the time, youre trying to do a cooler with a freezer application. So the whole thing is messed up. Wire it as a cooler
Installers are service techs job security. Very few good installers left. Most just install fast and move on.
That's very true. I don't bash on people much, but when the schematic is right in front of you, I mean, cmon...🤣
You hit the nail on the head
That's awesome troubleshooting! 👍🏽
Carlos Caballero thank you bud. I appreciate the kind words. And thanks for watching.
You sir are no rookie. Thank you for your posts. Kinda been binge watching your channel.
Sorry I'm late to the party, but I noticed you were looking at the wrong wiring schematic for this evaporator setup. Heatcraft provides a number of different diagrams, one which specifically addresses when there are contactors in the condensing unit for the fans and defrost heaters. The one you needed should have been one the other diagrams on the unit. Here it is in their systems installation manual at the bottom of p.25: docs.google.com/viewer?url=https%3A%2F%2Fwww.heatcraftrpd.com%2FPDF%2FI%26O%2FH-IM-CU.pdf
The way it was wired was basically correct per the schematic, but it looks like they messed up the wiring of the terminator because it (obviously) wasn't working.
This diagram also shows how that heater limit t'stat was supposed to be connected.
Hopefully this may help the next time you find this kind of mess. ;)
Rookie el compa supertech 👍🏾
Hey dude . shouldn't that temperature bulb be on the suction line because it should be reading that tempreture
pretty cure Forever this thermostat is used for air temperature. So it is reading the box temp as a form of temperature control. Not on the suction line.
in 23 years of commercial refrigeration i never met a electrician that could wire a freezer or electric defrost
Darek Cieslik kinda sad don’t you think.
Rookie Refrigeration yes it is
Rookie Refrigeration I like your videos keep up the very good work you do
Thank you bro
Thanks for sharing
Nice troubleshooting I enjoyed this video.......
Thank you. And thanks for watching.
Great video bro
XRAY Bravo thank you kind Sir.
Must’ve been a Friday for them..
Why are they using heaters in a cooler?
Someone, somewhere said so. I’m not sure.
Nice job and video
Somehow I had a thumbs down on this??? Now corrected to thumbs up!
Keep up the video bud.
No defrost termination?
Chris C was not installed. On the 2nd part of this call we do it.
Nice video
What was the va on that transformer?
JJ James not enough bro. Lol.
72 degrees ? too hot
💪🏼
For newbies, here's an article on Fan Delays and what they're all about:
www.achrnews.com/articles/85987-using-defrost-termination-and-fan-delay-controls
"We're not in Residential anymore."
Great videos! "Challenging".
Thanks!
15k views and just 415 likes? What that hell is happening with techs?
Lol. No idea bro
Hot as balls 80° lmao
Åreš 🤣🤣. It was actually higher and with the humidity. It was horrible. 😂😂😂
they also forgot to put a defrost timer,the just wire it direct, tin tirins.
Damn 119*F, how long was that walk in cooler down? 11:14 freaking geniuses 😂😂😂
Familia Sanchez HVAC that cooler was remodeled 2 years ago. We just took over these stores, so it was like that for 2 years🤣🤣
Rookie Refrigeration Year2 Great video and great troubleshooting!
Familia Sanchez HVAC thank you bro. And thanks for watching.
👌
Needs a new johnson rod.
Wire it back to stock w a defrost clock.
Dumb boneheads that's where the pros come to the rescue!!! Nice find
Thank you sir
👨🔧
termination.
Ur good at ur job i learn much but u cry tomuch
Ruben Castillo 🤣🤣🤣
Stopped watching the video when you started pointing fingers,I know how you feel but just leave that part out