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Why does Testo limit the probe compatibility, so you can't use the psych air probes? You can't perform a forced air furnace test without air temp rise. Why can't I use my 905i as a combustion air temp probe? Instead I have to by the 915i to be compatible.

Worthless app now. The cancelled the gauges in the app, yes the one you see in the screen on this video.

I work on a lot of walkin freezers and coolers and temp clamps loose connection when I'm on the roof and probe is in the suction line in the box around where the txv is at

These products are garbage don't buy them. I have the gauges, the scale and the Bluetooth probes and they all have some major flaw that causes issues. For example, on this one, for a scale with amazing precision, you can't change the unit of measure. That's a terrible oversight. It's either lbs or kgs. So what if you run a tank empty and only have to run a few oz in? Or you're running r290 or r600 which is often measured in units other than lbs or kgs. Welp then you're doing math and watching the scale to make sure you get the correct amount. For this much money and features you'd think they would have thought of that. These clearly were not designed by people that actually use them. The blue tooth probes with wreck themselves after just a couple uses. The seals are junk.

IS it possible to measure CO2 in the flue gas test ?

Loving your videos on point will also like to see more on how wiring is done on these systems.

There needs to be an updated video on how to use this. I just bought one and the manual that comes with it is pretty much how to connect it to the app, turn it on and change the batteries. This video is pretty poor too.

Is that the oxygen sensor?

Is there a way to clean the sensor?

It is ridiculously too easy to turn these on. And ironically a whole process to turn them off

Keep getting the error 51 . After about 2 hours connected to the cloud ? What could it be ?

I wish you could buy chickens from local poultry farmers in Zambia.😢

Is there a video on the operation of unit

Need more information on the 310 ii

As a brand new tech into the Hvac/R trade i just got this ones and i love them...

Can you cover the case where there is a TXV valve instead? I tried contacting manufacturer (Mr. Cool) and they say I have to pull all the refrigerant out and weigh it. Seems ridiculous to me. They won't provide me a target subcool range.

Hi, can you email your customer readings from the app? Thank you

Presio x fabor

Of course the owner is white 😂 🤦🏾‍♂️

We can’t see what buttons you push, you might as well say blah blah, blah

Does it have sensors that need to be replaced?

What is the difference between the U CO and the CO?

I'm using the evacuation mode setup. Why does it have "deviation to lowest pressure in bar" - and I can't change it to "deviation in microns" please?..

What ppm was the calibration gas?

How would I go about doing an analysis when there is concentric piping straight of the furnace? It's a tankless water heater btw

I couldn’t figure out how to use this today on a brand new walk in install. Went back to the trusty cps scale. This is the most over engineered croc of shit I’ve ever had in my van. Should just leave it on the roof of my van and drive away

To measure total power, If the the configuration of the load is star, where do we connect tge test leads ?

HELLO! Thanks for your videos, and I would like to ask you if there is any way to measure the amount of air in depleting devices (floor devices with circular duct connection)

How about one in America

bad product dummy ports are placed so no hose can be attached look at video behind handle

You didn't ADD you removed freon... look at the pressures when he starts and when he is done "adding" ... lol it was 126psi low side and then 117psi after you "added" lol Plus the noise it made when you " added freon" was wrong.

When I went to setup the country and language version, they left out Canada but I chose the USA as the next best choice available. Can't wait to use it as it is a very well designed solid instrument. Thank you for the Webinar Testo USA.

Trash them these gauges are straight trash dude having same issue almost killed me when had to cut into line and still had pressure

Can you do 1 for r22 and 1 for vacuum.. please

What is the newest model wifi data logger?

does this work with the older 557s

Hello, what should i do when my testo does not send the alarm to my email anymore? I have checked the analysis and report, there were some points out of the acceptance criteria but my alarm list and my email are empty😢 plz help me

any plans to partner up with measurequick with these? Im not sure if you already have. itching to buy these at any rate.

Hopefully, I can get my hand on one of those beauties

which time hungry lion open tomorrow Sunday

Please where i can find it in Algeria

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do not buy, it is faulty not working properly - sometimes stop working, no light on the screen - at night you wont see anything, scam product, it working by sensor when it is hot, but once you remove it comes down to zero, i was on the street full of smell carbon, tester showed zero, it wont safe you at all, china cheap toy product! do not waste money, i can not get that people who advertised this scam!!!!!! you should be in shame.

If I’m getting a bad reading on on my low side .. what can I do to re calibrate them?

So I've watched about 25 to 40 videos from Testo in the last 2 hours looking to get new gauge set but it looks like all these 557S have bad port alignments if you look at the four port connection you'll see that the dummy port is either straight ahead on some and then slightly off on the others or one of the other so that you can't connect the hose quality control needs to be improved for these prices

Please answer these questions - 1 - Can it de used on masonry walls? 2- What is the maximum thickness of cement can it go through to detect the pipes?

Any training classes online how to use Testo 310 Residential Combustion Analyzer correctly?

For some reason when I connect testo 550 high pressure to high pressure low pressure to low pressure connector with all valves open before I turn guages on just like it's on instructions, I turn on all indoor & outdoor Mitsubishi units my Testo 550 shows me same pressure on low size and high side((( Pls help

Can get mine to connect to the manifold 😡

Where can i buy it in the united states ?