The 3 Pillars of Daikin Service Checker Analysis

No video

The 3 Pillars of Daikin Service Checker Analysis

Рет қаралды 8,996

Roman Baugh

Күн бұрын

Пікірлер: 77

@relaxalate Жыл бұрын

Really good video . DSH is a new item I’ve been running into on VRV and Daikin applied equipment. This really helped me bridge my knowledge gap , thank you!

@jeffendrulat3530 Жыл бұрын

Thanks Roman..... Best 20 minutes that I spent today!

@sameerpremlall8124 Жыл бұрын

Hi Roman, this is brilliant. Thank you for the content. I started service checker analysis about a year ago when I started working at Daikin and it took me a while to get the hang of it. I've gotten alot better at it but this video hear made so much sense. Thank you once again. Keep the videos coming 💪

@sameerpremlall8124 Жыл бұрын

One other question, the parameters that you speak about is all in degrees Fahrenheit correct ?

@platinumhvacrtechnologies457 Жыл бұрын

Yes in ⁰F

@po65231r Жыл бұрын

Is he not talking about k so should still be the same amount if deg c or F ??

@johngrayer7773 Жыл бұрын

@@po65231r Hey mate, K doesn't relate to F at all, K is absolute C, so if a water chiller (for example) has 12C entering and 6C leaving water temperature, this could be expressed as 6K of duty (12-6). 0K = -273C (absolute zero), 273K = 0C, 373K = 100C and so on. Cheers.

@epicone2449 Жыл бұрын

More videos please. Good job 👍🏼 I thought VRV 3 and VRV 4 have different ranges in permissible values

@RomanBaugh 7 ай бұрын

No same ranges as they share similar compressors.

@christopherhughes2482 Жыл бұрын

Excellent video!

@platinumhvacrtechnologies457 Жыл бұрын

Roman this is great keep the videos coming especially on vrv

@hvacgirlo Жыл бұрын

Brilliant information Roman. Thanks so much

@nguyennam880 Жыл бұрын

Looking forward to you sharing your knowledge related to data analysis checker. Thanks you.

@RomanBaugh 7 ай бұрын

The wait is over

@jasonjohnsonHVAC Жыл бұрын

Outstanding video and explanation

@guuuuustaf 7 ай бұрын

Great explanation!

@RomanBaugh 6 ай бұрын

Glad it was helpful!

@ping_me1vp Жыл бұрын

That's soo excellent thanks a million

@omegma87 Жыл бұрын

Thank you.

@americanpatriot9942 Жыл бұрын

Can we use this same method with all vrfs systems? Thanks in advance also great info god bless!

@johnchiarello1375 Жыл бұрын

Great video

@HVACR_VINYLS Жыл бұрын

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.

@RomanBaugh Жыл бұрын

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.

@HVACR_VINYLS Жыл бұрын

@Roman Baugh thanks legend. Appreciate it

@prowesstv Жыл бұрын

Bro got me locked in for the deep dive then only has two videos 😅😅

@RomanBaugh 7 ай бұрын

The wait is over

@BleedingEdgeHVACR 2 ай бұрын

Sorry I’m confused is discharge superheat calculated by taking Discharge line temp-Discharge sat temp or Discharge line temp-Liquid sat temp?

@joshuavaldez4094 Жыл бұрын

Great info 👍 👌

@Didik-cq8wy Жыл бұрын

Trimaksih bos

@user-wz6fw5sm7f 11 ай бұрын

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)

@RomanBaugh 7 ай бұрын

Fahrenheit my friend

@alanwang2900 Жыл бұрын

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

@RomanBaugh Жыл бұрын

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.

@alanwang2900 Жыл бұрын

@@RomanBaugh thanks, hope you could do a video the troubleshooting when unit is in heating mode. 🙏

@garypoplin4599 4 ай бұрын

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?

@RomanBaugh 2 ай бұрын

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.

@shirvonseemungal7719 Ай бұрын

How do we measure subcool on a vrv

@jorgevalladares179 3 ай бұрын

Are the examples shown, reflect a system running on heat?

@RomanBaugh 2 ай бұрын

Heat, Cooling, heat recovery it’s all relevant as long as you know the correct locations of where to measure these temperatures.

@mallkomoha6823 2 ай бұрын

Can rebroadcast the video in metric please?? I mean in degree Celsius.

@DaneSetser-nn9xc 7 ай бұрын

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.

@RomanBaugh 7 ай бұрын

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.

@DaneSetser-nn9xc 7 ай бұрын

Thank you I’ll start looking at the piping.

@cchurch816 Жыл бұрын

Also sensors and transducers. How to verify they work right

@jorgevalladares179 3 ай бұрын

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.

@ashleydavies7863 8 ай бұрын

Are the temperature figures in Fahrenheit or Celsius? As I'm in the UK

@RomanBaugh 7 ай бұрын

Fahrenheit good sir

@hugopalomo4222 Жыл бұрын

Hello Roman, could you put subtitles in Spanish? Thanks

@dcfabrication2097 Жыл бұрын

VRV DSH Discharge SuperHeat Discharge pipe temp - Tc ( condensing saturation temperature) Range 27-72 Below range ( overcharge) Above range ( low oil or low refrigerant) SSH Suction SuperHeat Suction pipe temp - Te ( evaporation saturation temperature) Range 3.6-32 (5-32) Below range (wet- liquid refrigerant at compressor)(overcharge or bypassing refrigerant In system) Above range ( low charge or restriction in system) SUB System SubCooling Tc - liquid pipe temp after heat exchanger(s) Range 11 +/- 3 Below ( undercharge or restriction ) Above ( overcharge or bypassing )

@RomanBaugh Жыл бұрын

Unfortunately thats not the whole story, I will be making a video in depth of each item and all the intricacies that go with it.

@sydneyabbas7999 Жыл бұрын

@@RomanBaugh Thanks Roman fantastic video, will help a lot. Really looking forward of your next video. 👍🏼

@nguyennam880 Жыл бұрын

@@RomanBaugh Watting

@NotOurRemedy Жыл бұрын

@@RomanBaughare these numbers for VRV3 and 4?

@LC-qi5ff 11 ай бұрын

How does overcharge cause low oil in compressor?

@tom24057 9 ай бұрын

Flushes out oil

@RomanBaugh 7 ай бұрын

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.

@cchurch816 Жыл бұрын

But keeping them videos comming.

@marcoferreira226 8 ай бұрын

I have a question are your Temps F or C?

@RomanBaugh 7 ай бұрын

Fahrenheit

@Scottyboyhvacdude Жыл бұрын

How long before you have to take this down?

@tom24057 Жыл бұрын

Why?

@RomanBaugh 4 ай бұрын

Still up Scott 😂

@Scottyboyhvacdude 4 ай бұрын

@@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!!

@guuuuustaf 5 ай бұрын

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.=)

@ryanbrown7134 5 ай бұрын

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.

@guuuuustaf 5 ай бұрын

@@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... 😁

@ryanbrown7134 5 ай бұрын

@@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.

@guuuuustaf 5 ай бұрын

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

@Jonathan-li1xh 5 ай бұрын

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.

@cchurch816 Жыл бұрын

U sound like u think all techs have basic schooling in refrigeration theory.

@epicone2449 Жыл бұрын

You need to know the basics before diving into VRV. Like experienced in service on package units or split systems

@cchurch816 Жыл бұрын

@@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.