HVAC HACKS REPLACING BRAZED HIGH OR LOW PRESSURE SWITCH
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- Опубликовано: 6 фев 2025
- This video shows replacement of a brazed /soldered HVAC safety switch high or low with no brazing /welding/soldering and while system is fully charged... PLEASE LIKE AND SUBSCRIBE
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Sweet thank you bro! You saved me $300 today 🤙🏽🤙🏽 I appreciate your knowledge!
thanks brother, i had to bypass mine till the technician gets to me but now i can fix it myself without spending tons of money on recovering the refrigerant 👍🏼
Thanks, I like the fact you left a way for the next guy to check pressure.
Simply Genius, That's my Saturday job; I was dreading calling a service company and having to recharge the refrigerant; probably cost $500 or more.
Thanks for stopping by
Thank you. Was going to have to pay a tech to come out and sweat in a new one for me. I troubleshoot my own equipment but brazing and recovery/charging is above my pay grade! This I can do. Appreciate you bro..
Did ya do it?
Never ever by pass a safety its there for a reason..Dam hacks..keep up the good work
This is a very smart hack! No pump down or recovery is needed!
Indeed
Old school troubleshooting... Great video... Keep up the good work...
Thank you I just learned something new from you. You explained it very easy. Thanks 100% great. Thanks Will B.
This is a good idea only question I ha e you screwed it to the liquid line port that has a Schrader valve in it how is the The pressure switch gonna detect the refrigerant with the Schrader still in there
Swivel tee has a schrader valve core depressor
I think this solution is very clever for a DIY person who doesn't have the equipment to recover the R22 and/or 410A refrigerate. I have a question though, how do you remove the schrader valve from the old service port so the refrigerant can flow freely through the swivel T and the new service port? I figure you need to remove the schrader valve for the refrigerant to move without restrictions onto the new pressure switch and the new service port. If you can answer this question I will greatly appreciate it.
The swivel tee have a schrader valve depressor built in!
@@D2DNYAC Ahhh! That's how you did it. Your solution works very well. I really appreciate the tip, thanks for the information.
Amazing video! thanks for sharing. Questions: how to replace the other low pressure switch if it doesn't have another port, like the high side? Thanks for your help
99.9 percent of the time you will have a similar port on the low side
Had the same problem, was thinking the same thing thanks showing me it is possible
What did apply on the joints, blue stuff I mean?
Refrigeration pipe thread sealant/ leak lock
Thank you for sharing
I may be a little late but im about to make this repair and i have a question. Do you take out the schrader valve from the original access port beofre you put the tee on or do you have a fitting in the female of the tee to press the valve in?
The latter!
Very clever, never thought of doing it that way. Much easier. Good job bud
Easier is generally lower quality and thats what this is.
Verry informative video. You make it simplify. One thing, how dods the pressure switches connected to the circuit?
In series with compressor controls in most cases and other times it will be connected to controller
How do you know whether the pressure switch has schrader valve or not on it? If you have to replace a bad switch with female threads on it, how do you know it can be removed safely without blowing the charge.
I have another video coming on the subject and I will explain stay tuned!
Great hack, some say you can bypass the high switch bc you'll never see an over pressure failure. Does that make sense? Then all you'd do is the low pressure switch hack shown here.
Opinions??
What are the switch P/N's please?
Nope don’t bypass safeties
@@D2DNYAC Thanks for your reply.
Thank you! This definitely helps. Question though, I know you said the switch depends on what refrigerant type. But after trying to find one for my specific refrigerant I'm am seeing some differences. Any high/low switches you would recommend for an R410A system? Or somewhere to buy them from?
Use a PT Chart to determine the best switch based on normal operating conditions or just get a switch that opens @ around 500 PSIG that’s okay for air cooled R410A high head pressure cut out
@@D2DNYAC much appreciated! Will look into that
Hi brother i thank your video but i am still with doubt a bout at which contactor i can connect the snap switch from LP & of HP
What are you saying?
Link to where you can buy the correct swivel tee and sensor would be helpful
Any hvac/r supply store
Online or otherwise
So how do you get the swivel in without losing the refrigerant? I mean it’s a great idea but not understanding how to keep from losing the refrigerant.
Installing the swivel tee is similar Installing your manifold guages to the system
Hi! I'm sorry to bother you, but I have a Goodman heat pump, and the compressor is not getting power due to a bad pressure switch (no continuity from wire going into the switch and wire coming out). I looked up the part (Goodman b1360719), and it says it's a low pressure switch. However, it's brazed onto the high pressure line. ?? I don't know enough about it to know if a low pressure switch should be on a high pressure line, but it doesn't sound right to me, lol. Anyway, I was so happy to find your video and see it might be something I could do myself, using this method to replace the switch!! I think it should be ok because there's nothing else connected to the line between the switch and the port where you would connect the high pressure gauge. Do you think it'll work, and should I use that same part? Or should I get a high pressure switch instead? I can send pictures, if that would help.
Possibly that’s not a high pressure switch
It is a lost of charge switch and your system may have lost its charge!
Ugh, I hope not :(
Thank you so much for answering my question! I bypassed the switch to see if everything would work without it (temporarily, just to test it). The compressor and fan came on, but no cold air. Unfortunately, I guess it really is out of charge and the switch was doing it's job. It's an old R22 system, so I'm scared to find out the repair cost (or even worse, they'll probably recommend replacement). 😢 But again, thanks for your help!
Any chance your going to be near Navarre next week? God bless
Where is that?
Sorry just seeing this. I thought you were in Panama City, Florida. I'm east about an hour and 45 away.
Thank you I do automotive and aircraft AC. Though I know how to fix HVAC as it is very close to the same thing. I would had to buy/make a recovery tank to do this on my home. I did not know they had that part. What a clever idea to solve a pore design idea. Other than $ I have no idea why they all don't screw on with a Schreuder valve. I guess engineers don't like field technicians or its all about money.
You’re SMART! Thinking outside the Box….
Thank you
Better than nothing, but the way you placed it, it can not be considered as a "hight pressure safety switch", because it actually monitors the "condensing pressure", witch is different. A HP safety switch must be situated between the discharge of the compressor and the entry to condenser, as close as possible to the compressor.
Smh 🤷♂️ 🤦♂️no my friend, the entire condenser is high pressure!!! Compressor discharge is high pressure high temperature vapor, liquid line is high pressure subcooled liquid! Okay
I think Karim is right. If the condenser gets clogged switch won’t be able to register high pressure
@@EMMAANDPHILLIPif your HPS is before the condenser like you say, and the condenser gets clogged, the LPS will sense low pressure and shut the compressor off. HPS switches are between the exit of the condenser and the service port.
@@BryanVoigt you right
Can you use any screw on type Daikin pressure safety sensor switch?
No
Very helpful video! Thanks!
Do you have the part numbers for the tee/sensors you used??
No I don’t however if you need it they are called access tees /swivel tees, google it!
Go any Hvac supply house or go ebay
What parts are needed to make this setup or buy it. I can't find anyone selling this type of setup or any information.
Is it an accurate pressure reading that far from the compressor when moving it to the charge port?
Pressures is the same whether at the compressor discharge or anywhere on the high side and name of the part is 1/4”swivel tee hvac supply houses sell it
@@D2DNYAC Thanks for the reply and information!
If I got both bad high and low pressure switches , is there a way to connect them altogether? Thanks
I don’t understand what you are asking my friend
Great job , Mine switch is also bad
Thanks for watching
What can be the issue when standing pressure is fine but when the compressor on the pressure go very fast down and compressor shut off even no leak from the lines????
Ha this one is easy my friend 😄| 99% possibly its a restriction, mostly common the metering device or liquid line filter drier
My service tech said he is not allowed to do that if the valve is outside the unit.
Well 🤷♂️
Can i do this on my home unit? I just got quoted an obscene amount because that low pressure sensor is bad.
Perhaps
why didnt you use the other suction line port that is capped off instead?
Because that's the low side port
You replaced the low suction side pressure switch, with a pressure switch on the liquid line high side ? So how is it protecting against a unit that has low refrigerant in it and why do factory units come with both high and low side pressure switches if this method is right?
No I didn’t watch the video again! Please
What I did is omit the factory HPS and install new one on the liquid line I never touched the LPS or low side
Enjoy your work. Keep making videos.
Thanks for watching
Good boddy I liked the tip god bless you
Thanks for watching
Great video! It looks like you used some type of thread sealant on the flair fittings for the line and switch. Is this advised and if so what sealant did you apply?
Leak lock the blue tube joint thread sealant
What is blue staff?
Leak lock seals the threads
Excellent video
Thanks for watching
I gotta install one of those on a condenser there's not the kind of space to install a T hope i can tetris in an L & still find a way to T it into a spare service port😬
Lol 😂 good luck
How did you connect the high pressure switch on that line?
Please be more specific
It screws on over the high pressure side gauge port. Not really a recommended fix, but it sort of does the trick in certain desperate situations.
your life saver. Thank you for sharing your knowledge 😊
😊 thank you for watching my friend
Ingenious....Thank You Mate!!!!!!!
Thanks for watching
What is the name of the valve o whatever you place on the recovery plug?
Access tee/valve or swivel tee
The swivel T, on the female part has a depressor built in? Or did you add the grommet with depression inside the swivel T.
Swivel tee has depressor built in!
This would not work on a heat pump, right? Test ports being after the reversing valve.
It will work on any service port! That you attach your manifold gauge hoses to
I was thinking that on a residential split heat pump, in heat mode, service ports change roles. A high pressure switch on a tee at a service port of the smaller line would only protect in cooling mode. I hope I'm wrong.
@shoosh I miss understood your previous question!! yes you are in fact correct 👏... this won't work in that application 😉 residential split heat pumps!
@@D2DNYAC Thank you very much!
Thanks man. Makes a lot of sense.
Thanks for watching
thanks these fitting really help
Thanks for watching
This is called the "honda way"
When honda boys go turbo in their civics you do this same exact thing to the oil pressure switch to get extra oil behind the oil pressure switch to feed the turbo kit
😂
Same hack for high pressure or low pressure switch?
👍 yes
Ty
Thanks for watching
Do you work on private residential wall ac?
Ductless mini splits?
@@D2DNYAC no a friedrich sleeved unit.. Keeps throwing code 34, high pressure switch & I have to constantly reset the unit. I actually have my hose running on it to keep it kool as we speak.
No I don’t to those however looks like you have a dirty condenser coil or bad condenser fan motor!
@@D2DNYAC thank u anyways. I had the ac unit out & literally scrubbed it spotless, inside and out. It's the high pressure switch & I have my garden hose running directly on it & it is working fine.. Qwik fix
Great trade trick. Thank you !
What size is this swivel tee? 1/4?
Yes sir 1/4"
You sir are a genius! You got a subscriber. Is there anything I should pay attention to when installing the swivel tee? Thanks!
Just attach the switch to the swivel tee and tighten it before you install it to the system and wear a glove, expect a little refrigerant to spill however just keep tightening down until stop
You have to show the complete process how did you replaced that safety switch without recovering refrigerant...
What part number is the low pressure switch thanks
Part number?
All you need to know is the refrigerant type and you can purchase the switch
Genius 👍🏾👍🏾👍🏾
Thanks for watching
Excellent video... Thank you....
Thanks for watching
Go to the REFRIGERATION supply house, not as likely to find these at the HVAC supply house.
Yes
did you pull the stem out of the test port before installing new T?
No you cannot do that if the system is charged! You blow all the refrigerant 😂
@@D2DNYAC He says that it is done with system fully charged....?
Yes the the system was fully charged!
Is good video you don’t explain the size of the pressure switch on details ?
Size?
Like your tip great help.
Thank you for stopping by
Bnas noches cómo se llama la conexión
Awesome..
Thanks for watching friend
Nice
Thanks for watching
Hello, does anyone have a part number for the pressure switch by chance...thanks!
If it's the high pressure switch you seek then all you need to know is what refrigerant is in your system!!!! Switch ratings is based on system operating pressures,,, systems is based on what type of refrigerant inside
You the man bro
Thanks for stopping by
Good job.
Thank you for stopping by
Dope video
I thought everybody stopped using that blue leak lock? Nylog is what most people are using nowadays.
Yes 😂 call me old school, I use nylog as well
You just saved my ass brother
🤣🤣😂
Just keep watching
Like a share
Thanks!
Thanks for watching
Did you think of this?
What?
@@D2DNYAC Relocating the switch.
Greatℹ
Awesome! Thanks
Thank you
Thanks for watching
Love the hack brother! Hope to use it on the field soon!
genius !
Thanks for Watching
@@D2DNYAC nobody besides an Asian dude want's to show you how to bypass this sensor :)
Wait, the evaporator coil is frozen, and it's because of a bad high pressure control? lol
🤣🤣🤣🤣 Smh thanks for watching commenting, I said “ I did a previous video regarding” on this same unit and the Low pressure switch was also bypassed see this video @ 5:20 into it “ ruclips.net/video/-Y_5iZaQvCI/видео.html ” Titled “what will happen if I skip my HVAC maintenance “
lol
Should've put it on the discharge line rather than the liquid line but otherwise good job
Why? I've always thought the heat from the hot gas would make the the preasure switch fail quicker.
It doesn’t really matter where the pressure switch is installed but the hot gas line does get very hot.
Noice
This is a dollar tree type of fix that will most likely be a source of leaks in the future. I could think of a couple of situations where I'd be a hack and put this in (5pm on a friday, etc), but overall this isnt an ideal fix. What should be done is to pump down the system (you dont have to recover the refrigerant) and then properly braze in a new switch is the best way to do this.
Most rooftops i have seen DO NOT have valves to manually pump down and isolate the system. They only have the service ports.
@@harryschrysan3183 ok go for it and then cry later when it leaks. total non-sense....
@@srobeck77 I never said to do what he did, I only said that the rooftops I have seen have no valves to do a pump down. I am doing the sweat after recovering etc.
RUBISH, WHY YOU CANNOT SHOW FROM ZERO HOW DID YOU INSTALL IT TO THE PIPE???????????
😂🤣 Because I am holding the camera while I work and the last time I checked humans only have two hands 🤷♂️
I skip any video with the word "hack" in its title...
And you also sat in the front row while in school 🤷♂️
This video is the shit