Reversing valve - Heat Pump. How it works, Operation.

[@EngineeringMindset]

⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕ PayPal: www.paypal.me/TheEngineerinMindset

[@irshadakhtar2290]

I am big fan of your work and it is really appreciable

[@jollyscaria1922]

Heat pump is good

[@PosiP]

very good video for the 4 way valve

[@damonjenkins2185]

Gotta love it how a reversing valve is driven by a tiny reversing valve

[@jollyscaria1922]

Tankyou welcome

[@EngineeringMindset]

Learn *HOW HEAT PUMPS WORK* here: kzbin.info/www/bejne/h6rOqIqpaLFkjZo

[@jessehndz3124]

Thank you so much, great help! I'm currently going to school for HVAC and this video helped me understand the Reverse Cycle better...

[@ch1p0lte48]

Have you graduated

[@sachinpawar6339]

One like is not enough for this video.... Extremely helpful for total beginners.. thank you soo much.

[@glenguzman0383]

Hello, im an hvac tech.here at saudi arabia. Thank you so much for this video.. it helps me a lot understand bout heat pump. Since in the philippines we didnt use that on airconditions. God bless you guys for helping and.sharing more.info on us.

[@EngineeringMindset]

Arabic version here: kzbin.info/www/bejne/qnq3p4drm8yVg9E

[@VergilArcanis]

for anyone having to Braze/solder in Reversing valves, the U-bend inside the reversing valve is made of nylon, for the most part

[@FerralVideo]

That's so neat that your four port reversing valve has a tiny four port reversing valve of its own!

[@gencimurthi7901]

The videos in general are awesome and for school purpose are good too. The mistake in changing from hot to cool and the slide on the reversing valve doesn't move at all was a little bit confusing but I got understand and I also see some comments below that mentioned that. If you can improve a little bit more would be interesting for all hvac classes ON. Thanks.

[@alexk6745]

Thank you very much for your great work! The video was so great and explained to me how it works.

[@djdonkeydong133]

I'd like to compliment you on your great resource. This was a great learning aid 👍

[@collinsogalloh8357]

Thank you bro ..from Kenya really enjoyed the tutorial

[@MrPhotographer77]

Thank you for the explanation. Very good video. Very informative.

[@justinavery4047]

Thanks for this. I was curious how my countertop icemaker so quickly drops the ice and came here. Now I know 😊

[@STEINYY]

Very well made mate! When I found a job I will defiently give you that coffee you been thinking about.

[@abdelrahmanalhayek1869]

i think there is a small mistake in the simulation < that in cooling the moving body stay at the same position while it,s should move to the left and allow the refrigernat to go to the condesnser

[@EngineeringMindset]

Hello, yes, I did apologies in the video for the mistake. Well spotted though you were paying attention to detail, I like it.

[@ChileVerdeDavid]

@@EngineeringMindset it's the whole principle of the video. You may as well have not made the video

[@acrepairnearme]

Really helpful video for understanding. Thank you 🙏🏻

[@albertoreyes9287]

ts so helpful to learn just the way the reversing valve works. it allows to reverse cycles for both heating and cooling. The way it works the reversing valve it has two insede slide valves that it all depends what your calling for (heat or cooling)its going to close a side of the valve and open the other one closes.

[@wb3161]

Excellent video. I knew it reversed flow to change from heat and cool but had know idea what made it reverse. Thanks i doubt I’ll need it but interesting either way

[@rafaetkhanrk6475]

The Engineering Mindset good performance

[@jeetmondal8388]

This video was wonderfully educational!

[@musakavalci9470]

Excellent vid and simply explained

[@davidbenefiel9289]

Thank you. A great video.

[@freskimrama2982]

Thank you so much

[@pankajkhare83]

Good information, thanks

[@alak3073]

Thank you very much please keep the videos up

[@BritishBulldog4]

Very good video, thanks!

[@Loopyengineeringco]

Recently one of these failed in our 6 month old Mitsubishi Ecodan R32 ashp. The whole outdoor unit needs to be replaced, as these valves are brazed into the pipework and can't be repaired easily in situ. Very interesting video, thanks!

[@sanduinjudurtnasan9469]

Great!!! Thank you for your detailed explanations. I want to join your team. What shoul I do?

[@kiddsheppard]

Great content !!

[@fouadbenzahra9529]

Remarkable 👍

[@StoyanKostadinov]

Thank you so much! Great video! Really valuable information!!! 😊👌

[@samsyam9484]

Great tutorial.... thank you ❤️

[@Ecksterphono]

So ice makers use this as well. When it goes from building ice, once the desired ice size is met on the evaporator fingers or trays. The reversing valve switches from freezing to heating the evaporator momentarily to drop the ice off the fingers or tray into the bucket or ice catch tray

[@nicklaskent3289]

Thank you for this explanation. This will definitely help me understand my Ground Source Heat Pump system design!

[@GogoGogo-xf8uf]

Great stuff 👍👍👍

[@thirurajah1]

very very help full thanks

[@williamcurtner4984]

can i share this video with my class room ?

[@earthsign28]

Helluva illustration mate 👌🏽

[@tabridkala4024]

hi dear , one mistake in video in cooling mode (( start at 06:48 ))__4 way valve loop for cooling no chang in video from heating to cooling ,, please repair this mistake because your video very nice easy

[@mdjunaid5750]

Is there any video of chilled water pump designing and pump horse power calculation

[@ujjawalsharma2998]

Damn good thnq🙏

[@sunilwijeratne1620]

Thanks a lot

[@IMRANSHAIKH-nx1ry]

What is the position of solenoid in both cooling and heating mode?

[@dailygrindism]

Super great video thank you!

[@4BradRichardson]

Can the valve be shifted during compressor operation without damage

[@goodcruisin1]

This was a great explanation... I've been dealing with a mini split I just installed and the fan on the outdoor unit does not kick on allowing the unit to overheat and shut off. BUT... when I power off the inside unit... It comes on for about three seconds...I can't figure it out

[@lukelee6078]

Thank you :)Please keep uploading your wonderful videos.

[@rohmotullah4456]

Nice video

[@wmhvac-r2826]

Woe great explanation

[@AsmaKhan-ve5kg]

Hi. I i need to selct a reversing valve for y heat pump, what are the key paramezters beside the capacity. I check that the capacity requirement is fulfilled however I have very high velocity in suction line (during heating) and the datasheet specification of 4-way valve does not mention any velocity but the pressure ranges (which also meet the system requirement)

[@mikeyjason93]

Thank you! Good video

[@jollyscaria1922]

3line down center comper1st 2nd3rd outwr top compersor line revas line .

[@amameb8313]

Hi please I want to know how can I rectify leaking in the coil of the evaporator in the central AC unit Best regards

[@8joh58]

Hi Bryan how r u! I got questions I do get it hot gas come from discharge through capillary to shift reversing valve but where is suction line gas come from? Because I see the flow in video suction gas is not come from common suction line, low gas flow back to common suction! Where low gas come from? It’s doesn’t look like to from common suction? Thanks

[@seemypaints]

Thank you for the Information & Good quality video about the Reversing Valve Cycle. It would be much Nicer if you can move the mouse Slowly because Specially for beginners to put attention in what you're saying and try to follow up with the mouse moving to fast It's Really difficult to Focus on it, & also the mouse Color would Nicer if you can change the Arrow to a Black color sense must the time the background it's White. Thank you again !,

[@ItchyDingo]

2:00 mind blown

[@peteranand6254]

Hi.. Thanks for the great explanation on heat pump....What can we do in case if we use distributors on the evaporator? How the flow will be reversed correctly as there will be leads connecting the evaporator and expansion valve? I would like to know the set up for the higher capacity units. Looking forward to your response.

[@domelos3C]

The indoor unit freezes during the heating function. Everything is fine in cooling. Is the problem a blocked four-way valve?

[@Ceesiseenluldieditno]

Great movie, thnk you so much for this

[@sustainablepaths2015]

Absolute class! Paul can you make a video on ELECTRONIC EXPANSION VALVE ,which is used in VRF SYSTEM

[@EngineeringMindset]

Here you go: kzbin.info/www/bejne/jnnXg3ufgK6me7c

[@EngineeringMindset]

New VRF unit video here:➡️ kzbin.info/www/bejne/apqUiZqZhZano9k

[@ImtiazAli-qs4uo]

Great video .... One question ... there would be a great heat exchange inside the reversing value as two different temperature fluids are made to pass side by side... ? what do u think ???

[@EngineeringMindset]

I think you're right

[@mariusbotha5418]

Marius Botha 1 second ago No, think carefully.... there is no liquid (other than a very minute amount of oil present) only hi pressure vapour. I f you have hi pressure liquid there then you are in great danger or the piping on the unit is very very wrong.

[@muhammadjahangir5248]

Good

[@ericg.magnaye6899]

thank you for the video.. thumbs up bro...!☆☆☆

[@iranforever2546]

Thanks

[@bigdave6646]

Should these make noise when shutting down?

[@bahalrefrigerationtech397]

Thks

[@muhammadshoaib-qs1xz]

Thanks sir

[@JohnLastName]

what happens when a check valve misfunctions? I am having an issue in my home in the heat cycle only where when the unit cycles off, I get an intermittent hydraulic hammering for maybe 5 seconds. Only during heat, and most online sites I am reading point to a faulty check value on the indoor unit. What is going on in this instance?

[@brandynwebb]

Hi, In cooling mode, when the cooling cycle ends and the compressor is turned off, is the reversing valve typically held on (so that it doesn't slide back under the residual pressure) or is it typically disabled (open circuit/power down) along with the compressor? I.e., is the reversing valve solenoid typically on all summer, or just when the compressor is active?

[@marksmith6259]

In relation to the compressor at what height should this component be at? I ask this because most small systems they are above the level of the compressor, and there is a chiller which this component keeps failing where it's in line with the bottom of the component. Another question in relation is because it's low in the system would oil not get in and somehow block operations.

[@rando_webb8704]

So the O wire from the out door units control board would run to that cilinoid, and is energized when the T-stat is set to cool. If it is set to cool and the O wire is pulled the unit should switch from cool to heat. And if that doesn't happen the reversing valve has failed. Sorry, if this seems like I'm teaching, I'm actually trying to get the diagnosis process down in my own head so I can figure this out for my costomers.

[@Faruk3241]

Nice

[@jamesrockford5145]

What would be the ratio of refrig. to gas coming out of the TXV in the heating mode. Thanks,...... great demo.

[@jesusmeda7382]

James Rockford a

[@STEINYY]

Hey Paul, where your from mate? New Zealand, Australia?

[@kazimir8086]

Is it correct, I could use the cold of the night for cooling and the heat of the day for heating, with one device (Reversing valve)? I'm fairly new into this.

[@EngineeringMindset]

You new a few other components and some controls but yes. You can use this to provide heating or cooling in almost any weather. Even when cold out you can use it for heating

[@skyrunner1000]

There is a mistaken in the drawing in "cooling mode". The black moving part in the reversing valve should be drawn to the left site in stead of being in the right side, what is not so in the drawing. So it is advised to do this, to better understand the drawing. Nevertheless the gasflow side is correctly indicated.

[@EngineeringMindset]

Thank you for the correction. We did apologise during the video for the mistake and many people have also commented this in the comments section already

[@keithadolphus9945]

I notice the slide inside the reversing valve for cooling didn't move. Now that confused me. The right side should be uncovered

[@IceyJunior]

Can you talk about VRF systems in detail?

[@EngineeringMindset]

Hey icey junior. It's been a while. We had to remove our VRF series but we'll republish asap.

[@IceyJunior]

The Engineering Mindset Alright. Looking forward to it!

[@EngineeringMindset]

New VRF unit video here:➡️ kzbin.info/www/bejne/apqUiZqZhZano9k

[@CT-vm4gf]

So it’s really a “heat pump” whichever direction the refrigerant is flowing? It’s just that the condenser and evaporator are swapping their tasks over in the heating mode. An air conditioner and heat pump are two names for one device. A reverse cycle capable air conditioner?

[@laskasase]

My Gree Hansol does the defrost many times a day even when there is not even a smallest sign of ice on the coil. Why it is doing like that? Please help!! When the outdoor temp is around 3-4 C° everything is fine. It can run all day. If the outdoor temp drops at -1- -2 C° it does that 10-15 times a day, but no sign of ice on the outdoor unit.

[@christophertabamo419]

The problem in a ac with reversing valve when it got old some dirt from burnt oil from compressor clogs the pipe and gives a hard time for it to move and soon without you knowing it will get spoil

[@SNKHAN43]

How much ton to stars in chiller system

[@ErikaAndrusenko]

If its a TXV X-pansion Valve then where does the bulb belong? Check valves? Far away Tubes? Where?

[@239ubaidullahkhan7]

It's reversing valve for both cooling and heating, txv regulates correct flow of refrigerant and maintains superheat

[@hamzarajpoot1773]

Correct your animated Diagram ....Note your reversing valve behaviour

[@auqiz9]

Hello. Why my heat pump only blows hot air inside and cold air outside.

[@austincline8455]

Seeing as I have 8 minutes and 42 seconds of experience on the subject, you should trust me when I say your reversing valve solenoid is failing to energize when a call for cool is issued by your thermostat. I don't know what sort of unit you have but it could be a simple as replacing a capacitor. Best thing to do is call an HVAC specialist to troubleshoot the valve.

[@roslja]

New valves are "bistable", the coil never stays energyzed, power impulse activates it instead. They are not spring loaded.

[@AlamKhan-fi1dh]

Advie Dx cawn air handling unit instaling and pipeing video uplod

[@mariusbotha5418]

No, think carefully.... there is no liquid (other than a very minute amount of oil present) only hi pressure vapour. I f you have hi pressure liquid there then you are in great danger or the piping on the unit is very very wrong.

[@mariusbotha5418]

sorry, wrong post....

[@balkrishr3572]

Sir,this kind of valve,can I use for immediate defrost the cooled plate about -25*c.Where can see this inter market?Any sugg

[@EngineeringMindset]

you should contact a supplier such as danfoss they will be able to better advise

[@hasanbilal8744]

Parfact

[@bouzidoussama7546]

8.41m i understanded what i didnt in 4year

[@luisbrenes7039]

You are missing the accumulator before the compressor

[@EngineeringMindset]

Luis Brenes there are many parts missing, it's just simplified to make it easier to understand the basic operation

[@usmanrana86]

The Engineering Mindset could you kindly please make another vdo(s) for advance learners with actual cycle comprising of every possible components. Thank you. impeccable work as always!!

[@ratanrathu230]

How to work check valve

[@SalmanKhan-kk9fl]

cOOLEST VIDEO EVER

[@zafforthegreat8995]

Way too confusing of an explanation. Could have been better.

[@SirDella]

It's really easy to understand and well explained, I don't know what you are talking about.

[@steve87ish]

meow