- Видео 12
- Просмотров 20 382
Roman Baugh
Добавлен 22 апр 2021
LG Inverter VRF Compressor Teardown - Zero Compression
 in this video, I walk you through the teardown of the LG VRF compressor with zero compression.  I discussed what to look for in the field and also how to prevent failures associated with the one that we find in this video. 
Просмотров: 75
Видео
Daikin VRV4-X Inverter Compressor Teardown - Grounded Windings
Просмотров 11015 часов назад
In this video, I walk you through the teardown of a Daikin VRV-X compressor thats has shorted to ground.
Service Checker Data Analysis - Low Ambient Heating Issues
Просмотров 4947 часов назад
In this video, I delve into the intricacies of HVAC system performance, focusing on key data points like discharge temperatures and superheat. I explain the significance of various modes and control settings, highlighting the critical role of defrost cycles. By analyzing temperature readings and subcooling levels, I uncover potential issues such as charge imbalances and compressor strain. Viewe...
Data Analysis - DChecker 101 - E3 High Pressure Trip
Просмотров 2399 часов назад
In this video, I delve into analyzing D-Checker data, focusing on the evaluation of systems and the various options available. I demonstrate how D-Checker records data, allowing for in-depth analysis and troubleshooting. Viewers will learn how to interpret data points, adjust ranges for better visualization, and identify potential issues such as high-pressure situations. No specific action is r...
Understanding the Oil Return Circuit on VRV/F
Просмотров 629День назад
In this video, I delve into the crucial topic of oil return circuits in HVAC systems, focusing on the importance of evaluating and understanding these circuits. I explain the components involved, such as refrigerant oil separators and filters, and emphasize the significance of maintaining proper temperature differentials. Viewers are urged to pay attention to these details to ensure optimal sys...
Understanding the Sub Cooling Circuit for VRF🌡️
Просмотров 475День назад
In this video, I delve into the intricacies of the sub-cooling circuit in a VRV-4 heat recovery system. Exploring the design and function of the sub-cooling EEV, I explain how it transforms high-pressure liquid refrigerant into low-pressure saturated vapor for optimal system efficiency. Understanding sub-cooling is crucial for maintaining compressor performance and system longevity. No specific...
The Basics of Service Checker
Просмотров 1,5 тыс.10 месяцев назад
This video explores all of the controls, functionality and buttons that are used in Daikin's Service Checker platform both Service Checker3 and Service Checker4. I cover the what items are being displayed and what they are referencing within the program to help you understand what you should be looking at based upon the issues or symptoms. This video is a basic guide for those who are unfamilia...
Compressor Cutter - Copeland Teardown #1
Просмотров 590Год назад
Compressor Cutter - Copeland Teardown #1
Daikin VRV Capillary Tube Sizing
Просмотров 1,1 тыс.Год назад
How to locate and analyze VRV Oil Return Capillary Tube sizing. Remember that factory recommendation is to replace all capillary tubes with OEM parts found in our Parts Database. This video serves as an educational explanation as to what the specifications mean as well as how to minimize downtime in the field. This RUclips channel is not affiliated with Daikin or it’s entities. This is a channe...
The 3 Pillars of Daikin Service Checker Analysis
Просмотров 11 тыс.Год назад
The 3 pillars of Daikin Service Checker Analysis. This video focuses on how to use the basics of refrigeration to troubleshoot Daikin Service Checker Data. Regardless the number, high or low, we can determine what is happening within the system and investigate at a magnified level as to the issue. This RUclips channel is not affiliated with Daikin or it’s entities. This is a channel focused on ...
System clean up is a hell of a lot harder when you can't lock the system in cooling up north in the dead of winter. And there's not always enough room to put a dedicated drier right on the true suction before the compressor. Local LG rep up north here said they have had great success with liquid line HH driers on a bypass loop for a couple weeks cleaning systems up
Aloha Roman, our condo complex is about to replace a Samsung VRF system (600 high rise condo building). Is there a manufacturer that you consider to be most reliable? It will be a A2L VFR/VRV system as soon as the CUs and FCUs are available, Q3/4 2025
Haha also done a Daikin compressor breakdown check it out Roman!. But mine was fully sized
Man I Love this shit Thankyou!
Thanks for watching, compressor teardowns are a passion of mine!
As usual, best in the business. Top work Roman. (Also, hope you got my email the other day RE the VRV3 frosting) 😂👍
Hey Tom thanks! Yes I got your data and have it on my list to take a look at. Let me know if anything changes
👍love your videos always learning. A decade later and I’m still waiting for my first LG compressor failure on the larger VRF heat recovery system systems. I’m embarrassed to say when I get my first one I won’t know what to do. 😂 What caused the compressor failure?
Love it
It's gonna be a game changer when we can get AI to look at the data and give us an idea what is going on with the system. It'll be able to continuously learn and remember each problem it runs into and use that data to better help diagnose.
Brain officially explodes! 😅 Great video again
Great video Roman. Mind blown! 🤯 I would like to send you some scenarios that I find as well when we have a system that has more capacity tonnage on our fan coils then our outdoor units. (135% Connection Ratio) the data can get confusing at times when we have a full 100% call for heat on our fan coils.
I can do you 1 better and create a video on 200% Connection Ratio in Normal Cooling or Heating Mode and the reason why we should only be benchmarking systems at 100% capacity call. Send it all the same though!
@@RomanBaugh Copy! Send me your email. Ill send it your way today.
Checkerpolice@gmail.com
Thank you for the great and informative explanation! I noticed the software you used during the explanation, which seems to be a simulator for the refrigeration cycle. Could you please tell me the name of this software and how I can access it? Also, were the refrigeration cycles included designed by you, or are they built into the software? Thank you so much for your time and effort!
You can get a copy of all the simulators that I use for Free here. drive.google.com/drive/folders/18AgJ54m1d1yDNqttsWBgkI29MyUJ9HiC?usp=drive_link
thank you mr. roman 🌹🌹
Of course, thanks for watching
Great info! Would be interested to see you go through a unit that is running correctly
That’s a great idea and I will add it to the list!
More videos please! That was epic!
I hope you enjoyed it as much as I did making the video.
My mind is blown, glad I'm not the only one whose brain has turned to mush staring at SC data and not having a clue at what I'm looking at and what to look for. Also, your right, today was one of those days I seriously considered sending my application to Walmart.
Servicing VRF is always an uphill climb that sometimes only gets harder. Don't give up man and always, always, always work through it one item at a time. The 3 pillars is designed to help our brains process something that is complex and turn it into a form that is easy to digest. We eat an elephant one bite at a time.
Holy crap I’ve never seen a discharge pipe temp that hot before. Hottest I’ve ever seen in the field is like 212
That just means your systems are in fairly good shape! The highest I have seen in the field is 305 degrees F, compressor was smoking.
@ I really hope I never experience that. I start stressing when I see 200.
🤯🤯🤯 great training video as always roman 👏👏👏
Thank you! I am happy I get to help you on this journey of learning VRF!
These are SO good
Keep them following! How do I email you data?
My email is CheckerPolice@gmail.com. Give me as much info as you can.
Firstly, great video as usual Roman. Secondly… Have you ever seen VRV3 control PCB’s read the incorrect sensor values? Very very strange scenario I’m dealing with at the moment. 2 pipe 32hp VRV3 (two outdoor units twinned) Both refusing to defrost due to RT4 thermistors Showing 14c and 23c (above freezing) using service checker 4. However, I’ve measured the resistance values of both of the thermistors and the values are correct! 80k ohms. The only logical thing I can think of is that the PCB’s logic is displaying the incorrect values!!?? So we’re planning to replace both control PCB’s. Any other thoughts ? Regards Tom
Hey Tom, you can send me the data if you want of the system and I can have a look. Sounds like an issue with possibly displaying in F instead of C on the data you have. Remember defrost is an operation that has a specific set of conditions that have to be met in order to activate. My email is CheckerPolice@gmail.com.
@ hey Roman! I do have a short checker log I can send you! With some pictures take on site! Also.. I should’ve clarified, I’m in the UK, so everything is in C not F here. Such a strange fault. Never seen anything like it! Will email you in the next 10mins!! Tom
@@RomanBaugh email sent. Thanks!!
Hi Roman Tech from the UK , great videos mate! Got the BTSC but can’t get recordings of more than 5-10 minutes , is that normal or am I doing something wrong regarding settings?
So I am not a fan of the BTSC because the Bluetooth connection is spotty at best depending on the cell phone you use. Yes if your settings are incorrectly set then it will stop recording. I recommend the cabled DChecker when gathering more than 10 mins of data.
I have a problem coming to you. Fresh data today.
Can't wait!
I'm glad you were able to help this poor fellow
His recording will now help hundreds of techs understand how to help thousands more, all because he shared his problem and asked for help! This is because of him!
@RomanBaugh God bless him
Love it!
The beast 💪🏼💪🏼💪🏼
Would love to see you do an explanation of the hot gas injection for the cold climate units that can run at -30 and under, I believe these inject hot gas back into the compressor to boost out put. Also would be good to see a run through where your in high sensible cooling mode.
Vapor injection is a great topic for a video and I even have a nice video that showcases what is happening. I am adding it to the list of topics to cover!
Thanks Roman. Really wish this simulator was available for download 😂
They are, here is the link for all 5 VRV Refrigerant Simulators. Cheers. drive.google.com/drive/folders/18AgJ54m1d1yDNqttsWBgkI29MyUJ9HiC?usp=sharing
I really love your videos. I work exclusively on vrf / vrv units. I always look forward to your next video. 2 request. 1. Make a video of how you use oscilloscope, I use one as well. 2. Increase your mic gain when recording. Very hard to hear through headphones when at lunch or on break. I’m sure it sounds find through computer or amplified source. Thanks Greg
Thanks for the feedback and great advice! I am working on an Oscilloscope 101 guide and when I finish that I will make a video on live readings.
Good stuff Roman. Sounds like its an economizer circuit.
Essentially yes, we as an industry love to coin terms or names for certain technologies however they all operate around the same premise, flash tank, economizer, sub-cooler, desuperheater. They all do similar things it all depends on where it is in the system and what it has to do!
Thanks for the amazing videos. As always they are very educational as well as easy to understand. I had a follow up question. Can you explain the reason for cross flow for the oil circuit? Why not use a similar configuration to how most parallel racks for commercial refrigeration use where the oil is managed separately and or dump into a common suction section? Thanks again.
I second this, never understood the cross flow oil return lines on VRV
With a system in full heating mode, with moderate compressor speeds and moderate to high load in the building what compressor discharge pipe temps would be acceptable and what would be too high? At what temp would be the point where compressor damage might be occurring?
My next video is going to be on the subcooling in heat mode and the crazy things we see in low ambients. Remember Discharge Superheat tells us if we are safe or not. 72 degree DSH is the high limit. Also we don’t want to see extended discharge temps in the 230 degree range regardless of the mode. In defrost or oil return at low ambients maybe for a few minutes but not contently.
Looking at one now, In heat and im seeing about a 20 degree rise before and after the cap tube on the suction line. The small oil line is 122 degrees @RomanBaugh
Thanks for the informative lesson. Is this trainer you're using open to download? I'd like to use it to get myself more familiar. I'm working on more and more VRV HR units
Here is the link to all of the VRV Refrigerant Simulators, let me know if you have issues accessing. drive.google.com/drive/folders/18AgJ54m1d1yDNqttsWBgkI29MyUJ9HiC?usp=sharing
Thankyou VRV legend 😊
Let's go Roman!
Interesting to me we call 2 degrees superheat wet operation. I know its out of range but superheat is superheat weather its .5 or 5 degrees there is zero liquid present. Lets face it, these systems will always be problematic due to complexity
More service checker vids bro!!
my question is, why do people in US are so behind in HVAC industry? like you guys seem to live in early 2000s in terms of HVAC.
Would like a better video showing exactly how to get the DSH , SSH ans Subcooling
Roman Baugh that was very informative. 🎉🎉🎉
Thank you!
Daikin Service Checker is rubbish when compared with the LG System. Look up LGMV (Multi View) and you will see.
The mistubishi one is better than lg
@@Username-ng8jy Yes its good and covers about the same as LG do. I worked at Daikin 21 years and LG for 17 years but don't have hands on experience with the ME Product. Only stories from their Techs.
How do we measure subcool on a vrv
Depends on the series and mode but we should be measuring subcool using the coil temp leaving the heat exchanger. Not leaving the outdoor unit. Remember the subcooler on the unit will throw this measurement off.
Can you repost the input mode list. I had it but I somehow lost it.
Can rebroadcast the video in metric please?? I mean in degree Celsius.
I can but converting to Celsius is not difficult.
Sorry I’m confused is discharge superheat calculated by taking Discharge line temp-Discharge sat temp or Discharge line temp-Liquid sat temp?
Discharge, liquid, hotgas, suction, it all doesnt matter. What matters is pressure converted to saturation temp. So call it whatever you want but DSH is leaving compressor temp minus pressure converted to saturation temperature at that same spot. So yes Discharge temp - head pressure converted to saturation temp or Tc.
Are the examples shown, reflect a system running on heat?
Heat, Cooling, heat recovery it’s all relevant as long as you know the correct locations of where to measure these temperatures.
1:34 - Where do you put your probes to get the numbers for calculating discharge superheat? My understanding of the discharge superheat calculation is discharge line temperature less liquid line pressure (converted to temperature). Is that right?
Discharge superheat is measured using discharge line temperature 6” down stream of compressor then subtracting it from liquid line temp converted to saturation temp. 180-110 = 70 DSH.
Great video
Glad you enjoyed it
How do I view the refrigerant piping diagram?
great bit of info from you as usual
Thanks!
Great video
Glad you enjoyed it
I cant believe ive looked at this for 14 yrs and had no idea what these control modes were. Many thanks bro
Glad I could help!