If I can't find a residential leak with an electronic & sonic leak detector within 30-40 minutes , I like to add fluorescent dye while I add refrigerant. This provides comfort cooling until we can reschedule the leak inspection, and let the dye have time to show up After 35 yrs in residential, if I can't find the leak in a half hour or so on most units, then I know it is going to be a tricky one. The uv dye really helps to pinpoint the problem. Owner operators.. Remember, dye is a tool to help you. You dont need to make a fortune on the dye. Be fair to your customers. You will earn a fair profit during the repair or replacement of the coil.

@TaddyDigest

29 күн бұрын

Excellent advice 👍

@GApawpawandnana

24 күн бұрын

I wish I could get y’all’s service in NW Georgia. I was told you can’t fix a leak. You have to have a new unit. I get refrigerant added twice a season or use window units.

@carolync9408

Күн бұрын

I was told leaks could t be fixed period! Dye was added no leak found I was told it must be the unit leaking and that can’t be fixed. The Heil United is 2 years old.

I like how you gave the customer options and didn't judge him on what he chose. I need to find an independent contractor because these company guys are driven to force service contracts and high end equipment down your throat at every given opportunity. Maybe I'll get lucky and find a guy like you.

@TaddyDigest

Жыл бұрын

Thank you yeah I just want my customer to be happy. I offer my advice and it's always just what I would do if I had their situation. I agree with you A lot of companies are just driven to make a sale and they don't care about the customer

@ronniehvac653

Жыл бұрын

Hey Dale, I hear ya brother. I work for a company in the Hudson valley in NY. A lot of competition but countless number of times I'm servicing equipment with the competition's sticker on it. I always try to be as transparent as possible. I've learned that once you lose a customers trust, you've lost their business.

@Minimarshi

Жыл бұрын

@@TaddyDigest I have the same issue, lost about a pound in a year. Have had 3 companies come out only to not pinpoint the leak, guessing it's probably on the back of the evaporator coil like this one. What did you recommend replacing, the coil or the whole handler?

I use Fieldpiece's DR82 Infrared Leak Detector. It's freakin awesome! I do a 3-hits-it's-a-leak check, but I really don't have to; if it goes off, there's a leak (or I accidentally bumped the tip on something). Probably the greatest feature about this particular leak detector is the fact that it gives you three signs to let you know that there is a leak: there's the audible sound, the flashing of the tip, and a vibration throughout the leak detector itself. That's awesome! So it doesn't matter if you're blind, deaf, or dumb, you will find a leak if there is one!

You are the best teacher on here! I’ve been thinking about going to school for my H-Vac license. Texas is so hot during the summers! I liked & subscribed!

@TaddyDigest

10 ай бұрын

Thank you so much

Excellent work! Thanks for a better understanding on the process. I love learning more and more about my trade.

@carolync9408

Күн бұрын

And that makes for a great contractor, love to hear that. Some ppl are quick to just make money vs actual saving customers a few dollars.

@carolync9408

Күн бұрын

I have a question does refrigerant have to be in the unit to use the nitrogen?

@carolync9408

Күн бұрын

Watching this video tells me why most are saying get a new unit. SMH! Gratitude to you sir for loving and perfect your skills. So appreciated.

when it leaks fast condenser side. when it leaks slow evaporator side.but it all depends on the size of the hole.

Great information. Just ordered Webb Coil Cleaner from Lowes.

Good video ! But Here’s some tips from a Guy doing it for 42 Years. 1) if System has at least 1lb of liquid refrigerant in it. ( 410a systems ) Just pull the disconnect. Wait 5 min for system to equalize. Equalized pressures on 410a system at 60 degrees outside with liquid in it will be 170Psig. Higher if its hotter out. See pt chart. 170 is plenty to find a leak with a H10-leak detector or any decent leak detector. 2) Most Leaks are in evaps. 75% of the time. Start there first. 3) Rarely have i needed to pressure test over 150 psi to find a Leak with a Ge H10 leak detector.

@stevenross9271

Жыл бұрын

I have been doing refrigeration and air conditioning for over 45 years. I am partial to my Inficon select. I spent 30 of those years behind a desk as a service manager. I diagnosed techs problems over the phone. Always look for a leak if the unit is low. To just add gas is not performing your job.

@stevenross9271

Жыл бұрын

The G.E. H-10 with a cord is without a doubt the best leak detector you can get your hands on.

@eethridge4065

7 күн бұрын

That rare time is that dang ice machine that passes the pressure test twice and has a fan switch that doesn't leak until it hits 275 psi high side....ugh

“Three dead mice…three dead mice…see how they spin around the blower motor.” 🎶 😂

The common census for leak checking is to raise the pressure no higher than the highest rating on the low side. Its to avoid damaging the internals of the system.

@rwood1995

10 ай бұрын

That makes it hard to sell them those items though dont it?? 🤑 JK LOL

@g-lato9791

2 ай бұрын

Does that also apply to the heat pump tho , since it is reversible and they both use the high pressure

@srobeck77

2 ай бұрын

@@g-lato9791 incorrect. This is a lack of understanding right here. In a heat pump, the high side just alternates between the evaporator and condenser but is still same high side pressure reading to go off and you should not exceed that number.

Excellent information in this video! Man I appreciate that for people like me that watches KZread to learn for homeowner use . Subscribed

@TaddyDigest

11 ай бұрын

Glad to hear the information was helpful thank you so much for watching

safety first. safety meetings every 10 business days

Nice work!

"I will keep you cool if you let me!" ..clever tag line earned my sub.

@TaddyDigest

9 ай бұрын

Thank you brother

Great job Tadd!

@TaddyDigest

Жыл бұрын

Thank you my friend

Great quality content. Keep it coming!

@TaddyDigest

Жыл бұрын

More to come!

thanks for the vid Tad !

I use accu trak ultrasonic. I have used it for a little over 10 years. Works great. It is not a sniffer. Sniffer will go off with anything that burns.

CPS leak detector is the best. We had a leak on the R114 plant and it was like chasing a ghost. We put soap on the area and it took about five minutes and the bubbles were so small it looked like shaving cream. That's how small the leak was.

Great video. Thank for sharing your knowledge and skills. Im subscribed.

Thanks for the tip 👍

@TaddyDigest

Жыл бұрын

Any time!

My man’s got a bow tie on his lip!

Great video .

Is there anyone cool and honest like you in San Diego?

@TaddyDigest

10 ай бұрын

not sure my friend

Great video !

@TaddyDigest

7 ай бұрын

Thanks!

H10Pro by Bacharach for leak detectors. Always check the service port caps with electronic before getting the gauges out of the truck and before touching the caps.

I use the Testo 316-4 for R410a systems and the Testo 316-3 for R22, but the Inficon Tek Mate is also great option for r-22 systems ( I also have a Inficon tek mate). The Testo 316-4 is probably the most sensitive electronic leak detector I’ve used for r410a.. and I’ve can’t even start to tell you how many electronic leak detectors bought then sold trying to find a good model. Do a Search for NathanHVAC electronic leak detector sensitivity test. He has tested most of the leak detectors I’ve purchased. He has made spreadsheet of the leak detectors and their sensitivity for R22 and R410a refrigerants. I’m trying out Ultrasonic refrigerant leak detector this spring/summer to see if that can help pin point small leak’s faster.

@MrDeviousdom

Жыл бұрын

I've used several ultrasonic leak detectors and found that they were useless when trying to find small leaks. See what the return policy is on the tool just in case. A good way to test it is by using a calibration vial.

Hey, Tad. I use the yellow jacket sniffer. But I also use the Superior Accu Track ultrasonic leak detector. You could have heard those mice fart before they died.

@TaddyDigest

Жыл бұрын

Very cool ronnie

Great video very Informative And very easy for Me the weekend warrior to follow

@TaddyDigest

Ай бұрын

Great to hear!

How many clowns just fill up your freon and try to sell you a new unit when it all leaks out again?

@HippieMosquitoQuatro

5 ай бұрын

Yes.

@waynegent2263

4 ай бұрын

My boss gets upset at my sales bc their so low. I always find the leak and make sure customers get repairs pricing and unit price depending on warranty. He hates it but keeps up withit

@leestebbins5051

Ай бұрын

Freon? Old timer.

@AfiOyeTheNurse

23 күн бұрын

Yeeeees! That's why I'm watching this video because we got new unit last year, and the man done put freon in it twice and it's still messed up. He didn't even tell us we had a leak.

@southside6924

17 күн бұрын

@@AfiOyeTheNurseoh lord that’s not good at all

Thank you ted

I joined. Like your videos very thorough .

@TaddyDigest

24 күн бұрын

Thank you so much for joining. Here is my email tadfuller1@gmail.com

Another great, helpful video! Very nice 👍🏽, very mice 🐁

@TaddyDigest

8 күн бұрын

Thank you very much!

I feel for the home owner... but the best thing to do is have some window units ready... 3 units are more than enough to keep you comfortable enough when SHTF with the main AC. they cost $150 each. Then with an older system, especially one approaching 20 years... just get the full install. else with and older system you may find yourself spending more money over the long term vs a new system plus the inconvenience (they always break on a Friday afternoon ) constantly fixing issues as its dies. At least you can get a warranty on installation and equipment that will cover you for a year or more. I also recommend insisting they inject UV dye into the system upon installation or even service. that way its easier to find the leak should one creep up at any point due to installation errors or aging.

I use the yellow jacket infrared leak detector works great

Great video buddy

@TaddyDigest

Жыл бұрын

Thank you my friend

Hey Tad. What's the 1 to 98 countdown when the wind free units shut off after cooling?

Great video! I feel like people are scheming us and we live in Florida and our AC unit broke 3 times in the last year and we got it new last year. Weird

@TaddyDigest

23 күн бұрын

It's hard to find Honest companies.

If it's a large leak in an air conditioning system it's usually on the high side of the system To check the condenser hook up your high side and low tide gauges turn off the power remove the condenser fan motor from the top of the unit Turn the unit power back on checking the high side pressure with condenser fan motor not working the high side pressure will increase to a point where you might be able to locate the week much easier Do not exceed momentarily 400 PSI Turn off the power check With an electronic leak detector You can also use an UltraViolet leak detector After injecting and allowing the fluid to circulate throughout the system One other method is using nitrogen to build up the pressure to see if we could find a slow leak using a Ultra Violet leak detector after injected fluid All these methods MUST only be performed by specially trained air conditioning service technicians with years of experience Absolutely no homeowners should ever attempt these leak detection procedures which could cause permanent bodily injury or possible death Leave it to the professionals

I am just doing some research to learn more. My techs are taking 4 hours to do a leak check after putting dye in the week before :)

@TaddyDigest

9 ай бұрын

You can do it!

Good guy

Put your finger in there and see if theres some oil in there lmao classic 😅

I'm having this same exact problem with my ac. Guy came out couple years ago and replaced the fan thing on the inside unit and said that would fix our problem. The system will not hold refrigerant. The line constantly freezes up. Definitely don't have $$ for a brand new system. Just need an honest trustworthy HVAC person to look at it and find the leak and tell me if it can be fixed. I'm in Virginia about 50 miles south of DC and 50 miles north of Richmond if you know of anyone in the area you can recommend.

@TaddyDigest

7 күн бұрын

You could try some leak Sealant, and u v dye define the leak. Check out my video on leak sealant

Three dead mice would be a great name for rock band.

Thank you sir

@TaddyDigest

11 ай бұрын

You're welcome my friend

Bow tie.... mustache?!!! 😂 too cute!!! 😊😊

How much do you charge for a new evap coil? Here in California it's about $4,500 to replace an evap coil. If it's under warranty, it's about $2,000. Some hvac companies don't even check to see if it's under warranty. I've done two evap coils under warranty this year as a second opinion. The first two companies diagnosed bad evap coils and never checked to see if they were under warranty and quoted the customer about $4,500.

@TaddyDigest

19 күн бұрын

wow that is bad That is way over priced

@salehm1723

13 күн бұрын

4500$!! That's crazy

Dye is Best! Hands Down.

tell us about the stop leak additives.

I being hearing good things about the inferred leak detector

Great video, my question is if the condenser is grounding out at start up and burning out the fuse do I need to replace the condenser

@TaddyDigest

2 күн бұрын

Not sure I would probably need more info

@markbrown6669

2 күн бұрын

@@TaddyDigest I replace fuses in the electric box to the condenser turn on the system and it start sparking, I shut it off and I had the wiring check and check the fuses again and one of them was shorted out again. I'm not sure if the shortage is because the condenser needs to be replace or if there's something else I can do before replacing the condenser.

Hi. What are the resons if frequently happen leakage in condenser coil bends

I have a system from the mid 90s that hasnt run in a few years due to a leak and the refrigerant being super expensive. can a system like that be repaired and retrofitted? or would it be a wash in cost and better to just update?

@TaddyDigest

Жыл бұрын

I would probably upgrade

Some of the new evaporator coils will not withstand more than 150 lbs. of pressure without causing a leak, they have warning labels saying as much

What does it mean when the copper tubing, the one inside by the unit is warm to the touch, even the copper outside?

I would not recommend to anyone to go 500psi on a leak test. I, like Oc have been doing it a long time. Never pressure tested that high, even on the commercial side of things. Can get dangerous. Usually there are operating max pressures listed, I would not exceed those. There is a leak detector that works via sound. I had one of those as well, no matter how small the leak, it would sound like a hurricane in your ears. Nice vid.

@MrDeviousdom

Жыл бұрын

500+ psi is where a 410a system is operating during the summer.

@MetalDetectingwithCZkidd

Жыл бұрын

@@MrDeviousdom where? If so, clean the coil. Maybe in AZ. Not in FL.

@MrDeviousdom

Жыл бұрын

@@MetalDetectingwithCZkidd In hot areas. I don't understand the point of your comment.

@epeterson711

Жыл бұрын

Agreed! I have never heard of anyone EVER going to 500 psi!

@MrDeviousdom

Жыл бұрын

@@epeterson711 well, I'm in AZ and it does all the time on rooftop units.

Can u do a video on superheat and subcooling, i know everyone tells people to only check subcooling, which if the system is installed properly the txv will hold the superheat to what it is suppose to be, but alot of the time it's not and superheat is usually way low.

@TaddyDigest

5 ай бұрын

Type in the search bar super heat and sub cooling taddy digest. I did a video

I use the same detector that you have and maybe it would have found the leak if you had used it.

I use dish soap water paint brushes and spray bottle, the leak detector gives me a general idea of the leak is.

@SovereignTroll

Жыл бұрын

I was told dish liquids (Dawn, Joy, etc) have lye in them and are corrosive to copper. Use an approved something if you don't want to pay for Big Blue etc.. Also chlorine sterilizer in condensate drains can attack furnace parts, use vinegar. Yet in reach-ins salad dressings and tomato products seem to eat coils. Who is right?

Taddy digest have you ever worked on farm equipment ac units I’m a mechanic an have been fighting with one of are equipments ac units I’ve done replaced an fixed where the leak was but it still is leaking down can you help us out

I'm at 2:20 in the video. Does this hold true for vehicle A/C's? (slow leaks = low pressure side and fast leaks =high pressure side? Thanks for the video!

@TaddyDigest

7 ай бұрын

It really depends on the size of the area that's leaking

Hi! Thank you for this very informative video. I’m your new subscriber. Can I ask you a question regarding our AC unit? We just bought a house and unfortunately the AC is not cooling the room. The AC Unit is manufactured in 2006 (very old). And it’s definitely leaking refrigerant. The technician that checked the unit suggested to add refrigerant and check for leaks 1 or 2 weeks after. Is that okay? Or should I insist to find the leak first? I would really appreciate your advise. Thank you on everything that you do!

@TaddyDigest

Жыл бұрын

I would go ahead and let him add refrigerant because you need to know exactly how low it is Sometimes, it's hard to find the leak unless the refrigerant is significantly low, so it's good to know how low the refrigerant is before you schedule a leak check

@victork3397

Жыл бұрын

My company likes to use fluorescent trace dye for leak searches. And those require a return visit for Leah search after the dye has been circulating for a few weeks. Maybe that’s what the tech was referring to?

You have some good prices 😮

look for oil on the tubing

Great info. Its a shame when you have guys add more freon and try to sell it to the customer knowing there is a leak. Smh

500 PSI! The most I ever use is 300 psi for R410A and 150 psi for R22.

If its a heat pump you have high pressure on the indoor coil when its heating right?

@TaddyDigest

Жыл бұрын

yes

500psiig...bro it will not break the system?

I have had hit or miss with Electronics. It often goes off (all brands) if its near water in the pan , My Inficon goes off in light wind, My field piece just goes off because field piece. lol I almost always have better luck with Nitro and visual with soap bubbles.

Can I use shampoo as well? Thanks for sharing.

@TaddyDigest

Жыл бұрын

I'm not sure

H10 with the long probe

😮 damn mans a pro

Dont forget to pull the disconnect, ive sone that a couple times, best way to learn is to get zaped i guess or just pay attention haaha.

What about the charred wires ?

My unit froze up the lines are copper so I turned the unit off so it can thaw from the big ice block so would that problem be from having a leak in the system? Thanks in advance

@TaddyDigest

Жыл бұрын

Could be from leaking refrigerant. Could be from a dirty filter. Could be from low air flow. Just use a process of elimination to figure out.

is goodman heat pump GSZB404210A good for 2014 mobile home? in amarillo texas , r19 walls, r25 roof, r 30 floor, singal pan widows, 1216 sqft home. not air tight it has leaks. temps below 20 is like 8 days during heating seanson. i set termostat to 74 f and am using electric furnace 10 kwh for 108 hours a month. my electric rate is 0.097 kwh. the highest bill to have was 250 but that is from whole home usage. the goodman heat pump says it uses 2.9 kwh at 10 f with a COP of 2.08 and a 2.7 kwh with COP of 1.34 at -5 f. the price for the 5 ton a-coil and 3.5 heat pump is $4,876. i can get 30% off that price on rebate then it whould be $3,413.235 also, why whould tech go with mortex 5 ton a-coil and 3.5 heat pump. thanks for help.

Mice?? Yuck!! Great job on this system by you!!

You only put the max on what the system tells you #tag . Especially if you putting nitro on the low side if low side says max250psi you put 250psi

@gabooda2380

10 ай бұрын

there is no way to only put nitrogen in the low side unless you would disconnect the coil. But yeah, the coil clearly states design pressure and R22 is very low pressure. I thought last one I saw was 150 on the R22 coil and 450 on 410a coil.

I joined

Can an overcharging the system cause the TXV to get stuck closed?

@TaddyDigest

Жыл бұрын

Overcharging will definitely to stay closed

@user-tt3dv6sw2f

Жыл бұрын

@@TaddyDigest Thanks for that, the tech told me that the TXV is bad and he need to install a new coil, the system is 3-year-old. I took an image of his 4 port manifold + Micron gauge where it showed the following, on the left side, a pressure of 96.3 Psig below it is 39.1 SH, and below it is 29.5 VSAT. On the right side it shows pressure of 278.8 Psig, 16.8 SC, and below it 90.7 LSAT. I would very much appreciate your thoughts on this

@TaddyDigest

Жыл бұрын

Yeah it looks Like there is too much liquid in The condenser And not Enough Liquid In the evaporator so definitely could be the filter dryer for the t x v

I’ve been using the same leak detector. Had to replace the battery and sensor. Other than that, it’s been a great detector! I’ve also use a H10. A little expensive but what isnt these days?!

Good price

Can I put pressure in my condenser

@TaddyDigest

2 ай бұрын

What do you mean

With the industry going through a major shift to A2L refrigerants starting in 2025, does it make sense to install a current system based on R-410A or wait until next year for A2L systems?

@TaddyDigest

13 күн бұрын

If you don't have to replace your system, now I would wait

@sv1201

13 күн бұрын

@@TaddyDigest I did some research and installers are saying that the new systems might have a price hike of around 30% due to new sensors addressing flammability, tighter standards, etc. Is this true or attempts to sell the remaining inventory?

@TaddyDigest

13 күн бұрын

I will figure it out and get back to you

Technician said had freon leak! On evaporator! $. Ouch! He put leak seal! Looked like a syringe. What are you thought on leak seal. After a month, failed to cool again!

@TaddyDigest

Ай бұрын

Find the leak and fix it

👍

How would you purge the nitrogen later?

@TaddyDigest

12 күн бұрын

not sure

@geoffhart

5 күн бұрын

@@TaddyDigest What? Didn't you complete the repair? I presume you had to evacuate the entire system, then refill.

just got a quote for r22 refrigerant at 3 lbs it was over $900 that sounds pretty steep

@TaddyDigest

Ай бұрын

Dang that is so expensive

@maryschultz645

Ай бұрын

glad i held off especially when theirs apparently a severe leak

@centauri8820

22 күн бұрын

If you look around online you can buy 5lb cans of R-22 for $220. Of course if you have a severe leak don't bother on such an old system and get it upgraded.

At what point do you recommend replacing the condenser and evap coil vs just the evap?

Hay Taddy, Got an unrelated Question, sorry to post on your video. I went to a Goodman PKG HP the other day with Compressor not starting. I could hear it trying like a dead CAP. Checked the CAP (70x5 duel) it was 4.7 on fan and 311 on Herm!! 311/5 wow. Cap was 1.5 yrs old. I replaced it and system began to run. Was pulling 15.5 amps at start then 10 minutes in I noticed it had risen to 18 then ten minutes latter it was near 20. The RLA is 26. I traced the wires and found nothing mis wired to the cap so I called it the Compressor and recommended the Comp. I did not find any strange readings when I did OHM the comp tho before I restarted with the new CAP. Have you seen this before? It is a new one on me.

@TaddyDigest

4 ай бұрын

Is it a 2 stage compressor was it going into high stage? And that's why it pulled more amps Or is it just single speed

@user-ni2gf8gb9x

4 ай бұрын

@@TaddyDigest Single speed

@anthonybernier9952

2 ай бұрын

The capacitor can read higher but if you look at your meter its nano farads so its actually lower.

@anthonybernier9952

2 ай бұрын

kzread.info/dash/bejne/lY6J0qV-kqy4n9o.htmlsi=v8283FCc_UPzLQoh

Tad is solid

Homeowner must have picked the platinum package, all that he took loose

I have that noise coming out of my central vent when the AC is off. Does anyone know what's wrong with my AC? It works fine. Just that sound is lingering after it's off.

@hhn2002

10 ай бұрын

I’m not professional but just a guess it maybe the high and low side pressures equalizing which would be a normal thing.

Just curious what your thoughts are on UV dye and leak checking that way

D-tek 3

You should be able to wet your bare hand and feel for the leak better

@OcRefrig

Жыл бұрын

Yea, spray some soap bubbles on it. You can feel bubbles with your fingers really easily & it makes bubbles when you pass over the leak with your fingers.

My takeaway is to let the technician do a leak check even if it costs more up front. I’ll bet it saves money more often than not.

@TaddyDigest

Жыл бұрын

Absolutely

You guys have so much tool to do the job i don't have a leak detector eater nitrogen no access to those when i am doing my small ac work back home i have to use air from compressor and bubble but still get my job done 👍

@wasimedoo7994

Жыл бұрын

No advice 😞

@williamlangley2044

Жыл бұрын

When using compressed air, the air contains containments and moisture depending on location, I would draw a 24 or a triple vacuum, the air is primarily nitrogen any way.DO NOT USE A TANK COMPRESSOR unless it is drained clean.I think I'll try myself , think you!

@NytefogNJ

Жыл бұрын

Never use O2 (oxygen) inside refrigerant system unless you want a violent explosion and fire. O2 and refrigerant oils is a bad combination.

@wasimedoo7994

Жыл бұрын

Ok thanks for telling me but that is the only way I check for leak with my job I don't have nitrogen

@williamlangley2044

Жыл бұрын

@@NytefogNJ O2 is highly corrosive to steel and iron parts if you have copper o2 leaves a petena on copper.

Guys here tried to charge me over $1500 just to put $75 leak sealant in, so I got my 608 very and work on my system myself.

I have used multiple bacharach h10s and various other refrigerant leak detectors. I have NEVER found a leak with any of them. I always find them with bubbles, sound, and oil spots. What leak detector do you use?

@chrismyers5758

Жыл бұрын

I have never found a leak with bubbles only leak detectors

@MrDeviousdom

Жыл бұрын

That makes absolutely no sense as the h10 picks up leaks that are so small they don't even create bubbles. You might want to revisit your technique and or have the equipment checked. The H10 includes a calibration vial of R11. Make sure it's calibrated properly.

@donaldallen743

Жыл бұрын

I've found some leaks with the NAVAC.

@OcRefrig

Жыл бұрын

@ Christian lara Ive been doing Leak detection with a Ge H-10G Leak detector for 42 Years & it WILL Get you Right to a leak EVERYTIME. THE Problem is With YOUR Leak detector or YOUR Technique Period ! Basics of Leak detection with a Ge/Bacarach H10G Leak detector. 1) Plug detector in. 2) turn on. 3) set switch to Medium. Turn dial left until no clicks are heard during warm up. 4) Let detector warm up for 5 Minutes on the clock. Then adjust dial till clicks are heard every 1 second. 5) bring probe tip across top of Sample bottle & hold for 1 second. Leak detector should scream loudly. If not. Set Switch to SMALL. Adjust dial to clicks ever 1 second. Try again. Wave probe tip over sample bottle / reference leak detector test bottle included in every ge H10 leak detector. It should scream loudly & Red led should be flashing madly. IF Not Leak detector NEEDS Adjusted / Sent in for Service. If Leak detector works / Tests out good Here is Basic technique of Leak detection - 1) System Must Have 25 Psi of Refrigerant in it Min. Then - 2) Add 150 psi of Dry Nitrogen to System being checked. 3) Test that both Sides of the System have a Min Pressure of 100 -150 Psig in the System. 4) Allways check that Leak detector works before starting leak detection procedure with test vial or at refrigerant tank briefly. Once detector is known functional then & only then can leak detection start. 5) Start with Ge H10 Leak detector in Medium position , set click rate of 1 click per second & Bring leak detector Near Evaporator or Condenser. To check for leaks. 6) the H10 is designed to be moved across an area at a Rate of 1” per second. 7) DO NOT LET IT SUCK UP WATER / Keep it away from water. It is a Pump that WILL SUCK up water and it will instantly Junk out the Leak detector. 8) if you get the probe tip wet - Change the white probe tip filter with the filters provided. 9) Remove plastic probe tip & dry out with paper towel or rag. 10) Replace Red Floating ball 🏀 that is in Probe Plastic tip. ( it shows you that Pump is sucking air ) 11) install New dry white Filter into probe tip. 12) install Rubber tip on probe & start again. 13) Warm up Detector, set to medium, Keep probe tip moving at a rate of 1” per second & try to keep it away from water & soap bubbles. Keep approx 1-2” away from wet surfaces. This should get u started.