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Roman Baugh
Registrace 22. 04. 2021
The Basics of Service Checker
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 unfamiliar with the Service Checker program or need a refresher on what they are looking at within the program.
This video is a basic guide for those who are unfamiliar with the Service Checker program or need a refresher on what they are looking at within the program.
zhlédnutí: 997
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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
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.
Sorry I’m confused is discharge superheat calculated by taking Discharge line temp-Discharge sat temp or Discharge line temp-Liquid sat temp?
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?
Unfortunately you will have to reference the refrigerant piping diagram in the Service Manual as Service Checker currently does not have an active flow diagram like other manufacturers.
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!
great info, thanks, can you share service manual no.
Yes I can
So I'm still on service checker 3. Is outdoor suction temp(line item 77) air entering outdoor coil? I would want to use suction pipe temp(line item 79) minus evaporator temp to calculate superheat correct? Do I not have operation mode on service checker 3?
What is the model of your equipment? Based upon the model it may have 2 suction temp sensors. Yes thats correct VRV4 and newer is the only models with Control Modes.
@@RomanBaugh REYQ144TAYDU
great, thank you
Glad you liked it!
Do you know the process of Daikin minisplit, how do they calculate evaporating temp and condensing temp. Since they do not have pressure transmitters. Only discharge probe, ev probe and condensing probes, and air thermistor probes. Do they calculate evaporating and condensing temperatures via the compressor load ampere, and also take into account the heatexchanger probes? Its bugging me for real. Hope you have somewhat of an answer.=)
Short answer is they don’t. Thermistor data is all that is used to control the motor speeds and valve pulses. At least that’s what is taught in the mini split class.
@@ryanbrown7134 Then how can they get correct sh and sc? Its been bugging me how are they actually know how to adjust the eev. Some of the data needed for correct sh, sc is unknown. They must use ampere drawn by the compressor too trying to get somewhat of correct ev pressure and condensing pressure... 😁
@@guuuuustaf It bothered me too when I first started working on them. They don’t monitor superheat or subcooling. They may have an algorithm that determines wet operation with compressor current and discharge temp but I doubt it. Even if they did, they wouldn’t tell us anyways. Other than the logic, mini splits are very simple units.
Haha okeey thank you for the answer=). may be therefore they often have two accumulator tanks beside compressor. Cause the sh cant always be 100%.They are indeed very simple. The logic as you say is the more tricky part. @@ryanbrown7134
If the units don’t have the pressure sensor , it should have thermistor at the evap and at the condenser coil . These temperature will be used for evap temperature and condensation temperature instead pressure reading converted into sat temperature.
Is there any manual that describes what exactly happens during each mode?
Yes all of these items are in the appropriate service manual for that model unit.
Thank you Roman. We been ordering for months now. Sometimes only get a solenoid valve and coil only. I always tell them send me the entire assembly.
Glad to help
Great explanation!
Glad it was helpful!
We appreciate you Roman
Thanks!
I’ve got a total of 9 systems of 4X heat recovery units. We have had multiple issues and lost compressors. Your video made me dive deep into these systems. One system in particular is running a high DSH 90-100. SSH is within range no higher that 32 sometimes drops less in five. Subcool is within range. I did an oil differential across the suction line and was getting 7F then jumped up to almost 40F. Do you have any more info. Also where did you get the 30 modes local Daikin rep doesn’t have it.
Sounds like oil traps within the building. High DSH levels with normal range SSH and Subcooling means your compressors are low on oil. Sounds like piping errors or discrepancies. Meaning there are piping rules broken causing oil to become trapped in the system. Your local Daikin Rep will not have that list, as I translated it from Japanese. Daikin Japan is the only one with the list prior to now.
Thank you I’ll start looking at the piping.
Opening up a compressor
Yes sir
Where can we find the operation code list? I have been looking through the service manual. Iis there something you can share?
I will be posting it soon with an updated version.
I really enjoy your videos.
Wow! I am in❤ w/ this Guy 🧠….
VRV legend Roman!!
I dont know about all that. Just a guy who is passionate about VRV/F
I have worked for Daikin for many years in France and have never had this information. I've been seeing this number and trying to say "what does that mean" for a long time. Many thanks for your work and for sharing. good game.
I am glad you liked the video! More to come!
More VRV content would be great Roman!!? 😅😅
You got it!
@@RomanBaugh awesome. Here in the UK Daikin aren’t forthcoming with this information. Even their Multichecker training courses are average at best
Are the temperature figures in Fahrenheit or Celsius? As I'm in the UK
Fahrenheit good sir
I have a question are your Temps F or C?
Fahrenheit
How does overcharge cause low oil in compressor?
Flushes out oil
System never runs the compressor over half speed causing velocity to be low not allowing refrigerant to bring oil back from the indoor units. Couple that with liquid flood back then compounds the issue removing any remaining oil from the compressor.
Hi Roman, great video could you advise of these figures you refer to in deg C i.e. DSH range (27 to72), SSH range (3.6 to 32) & LSC range (11)
Fahrenheit my friend
Thank you.
Bro got me locked in for the deep dive then only has two videos 😅😅
The wait is over
Wish you had the actual parts on hand.
Of course we all do, however as a technician we have to just wing it sometimes
Thanks Roman..... Best 20 minutes that I spent today!
Trimaksih bos
That's soo excellent thanks a million
Looking forward to you sharing your knowledge related to data analysis checker. Thanks you.
The wait is over
Nice bro.🤳🛠️🧿👍
Thank you for your informational video it shows these units can be worked on and we just need to dig deeper
Another roman video. Oh shit yeh 💪
Hey Roman. When I’m using my service checker on a VRV 4. I have noticed the eev pulses have 2 sets of data. Eg it has upper heat exchanger eev pulses, and then upper heat exchanger eev US pulse. What does the US dictate? I don’t use it in my diagnosis, I’m just curious to what it refers too.
Yes there are two different sets, however do not us the (US) valve pulses as they are not for our market and will be misleading.
@Roman Baugh thanks legend. Appreciate it
How long before you have to take this down?
Why?
Still up Scott 😂
@@RomanBaugh I only say that because there's been some other helpful daikin content that was taken down. I don't understand the secrecy. We as technicians need any tools we can get, thank you!!
More videos please. Good job 👍🏼 I thought VRV 3 and VRV 4 have different ranges in permissible values
No same ranges as they share similar compressors.
Also sensors and transducers. How to verify they work right
Without getting into the math, Daikin has two apps that can help you convert that. Daikin tech and Daikin services, it’ll convert dc voltage to pressure (vise versa) and temps to ohm (vise versa). Then get gauges or temp probes and see if they correlate.
But keeping them videos comming.
U sound like u think all techs have basic schooling in refrigeration theory.
You need to know the basics before diving into VRV. Like experienced in service on package units or split systems
@@epicone2449 looked for the dsh, sc and sh on a daikin fit heat pump couple days using the daikin btsc app. The symbols arnt matchin on the app. Reverted to just using to probes. Went after the dsh and sh in heating mode. Looked normal. Last tech suspected low charge after the tstat error history shows low pressure trip. Found the data wire was grounded at the equipment chasis and corrected it.
Great video
Great video! Thanks for sharing. Are these numbers different when unit in heating mode? I always see outdoor coil iced up after the main eev, and from service checker, it shows the valve 3000 pls
The measurements discussed in this video are universal between all modes, however where we are measuring these temperatures changes. Measuring subcooling in cooling mode is using different temperature measurement locations than in heat mode.
@@RomanBaugh thanks, hope you could do a video the troubleshooting when unit is in heating mode. 🙏
Can we use this same method with all vrfs systems? Thanks in advance also great info god bless!