THERMISTOR Operation and Testing! Inverter and Mini Split Training!

In this HVAC Training Video, I show HVAC THERMISTOR Types, Operation, and Troubleshooting on Inverter and Mini Split Systems. I Explain how to Test if a Thermistor is Bad and How to Check the Calibration! Supervision is needed by a licensed HVAC/R Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #minisplit #thermistor #tubethermistor #beadthermistor #training #technician #operation #testing
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[@acservicetechchannel]

Mini Split Book on Our Website- www.acservicetech.com/mini-split-book Mini Split Book on Amazon- amzn.to/3ytHJSs Mini Split Book on TruTech Tools- www.trutechtools.com/BooksGuides Mini Split E-Book on Google- play.google.com/store/books/details?id=HN-iEAAAQBAJ Mini Split E-Book on Apple- books.apple.com/us/book/id6445178399

[@HayabusaRydr]

Found this while looking for a dissected cartridge thermistor on a 3D printer. Couldn't find anything until your video! Thank you for showing what was inside!

[@youoweme5forreadingthisnam535]

Thanks for providing minisplit training. Not many companies offer it and not many techs on the resi side actually understand the ins and outs of inverter systems and diagnostic methods

[@jpenn727]

Again, another wonderful and elegantly explained testing process.

[@brianmcdermott2430]

Great info as always. Thank you, Craig.

[@stan-r]

Thank you so much for making this video! We have 140 Samsung mini splits at our resort and we have struggled with learning how to troubleshoot them. I purchased the new book that you recently published as well so I’m starting to feel more confident with troubleshooting. Thank you for all you do 😊

[@acservicetechchannel]

Awesome!

[@zipperdingo6385]

Always a good value in every video, thanks Craig

[@acservicetechchannel]

Thanks so much

[@angusmac2037]

Such a great video. Easy to understand. Keep up the good work my man.

[@johnnyriser8519]

Well explained. Thanks for sharing.

[@stevencossaboon3237]

Good video Craig, Thank you

[@michaelmaclachlan2152]

I learned a lot, thank you!

[@tunaman2200]

Awesome video to supplement the book

[@vieuxacadian9455]

Another great video as always .

[@mitsos306ify]

Thank you very much for doing this video!

[@vw_mods_4711]

Got the e-book ❤ some very useful information for a new tech, thank you 🙏

[@acservicetechchannel]

Glad you like it!

[@rolanddejesus8685]

thank you very much sir for sharing...God bless.

[@hongvietphan9806]

I learned a lot, thank you so much sir.

[@deoranferguson5657]

I've always wanted this

[@gxdughat1592]

Good information

[@hmongbrothersqaibthaibyeej]

Good Info

[@howardblasingame7961]

Wonderful tutorial. I'm buying your book.

[@acservicetechchannel]

Awesome and let me know what you think of it after reading!!

[@michaeljamandron7820]

Thanks!

[@thesilentonevictor]

Good video

[@kaceywills8551]

Hey Craig do you mind doing a video on how to make one of those test transformers you used in your electrical strip heating diagnosis video?

[@pariwara43]

I like so much book

[@Barryd57]

This guy is the best on YT. Thx to his videos I learned how to install a mini split, fix my other AC, repair my car AC & even fix my refrigerator. It takes time to learn this and each time I complete something I take lots of notes and pictures so I remember what I did the next time something breaks.

[@user-im8rm4wl4k]

Very good explanation and thank you. Five thermistors in the split system exist, ok, but could you explain what each thermistor do? what tube thermistor in indoor unit do and what do bead thermistor.???

[@vieuxacadian9455]

You should produce a video on the ill effects of exceeding mfr. tubing length distances . Some may encounter such in light commercial applications as I have .

[@samhaazratechnicalsupport]

Very niece sir 🙏😘🇮🇳

[@rcinfla9017]

Most commonly used thermistor is 10k ohms at 25 degs C and temp coefficient beta of ntc 3950, also known as type 2 thermistor. Good idea to check thermistors, they do not have great reliability. Mini-splits can have up to four or five of them.

[@sachinchawla1368]

Hello sir, your videos are very informative, I request you to make this book and tools available online in India, thank you

[@ishalljr]

Thank you. Did you happen to compile the different manufacturers charts in your new book? Thanks.

[@jkbrown5496]

That would likely be impossible as what is used is an engineering choice. Likely most will be 10k thermistors as the chart in the video shows (look at the resistance at 25C or 77F) for the range, but it might be a different "type" which has a different response profile or accuracy. But 10k Type 2 seems to be the most common for middle temps. 5k seems common for freezers so the resistance change a low temp is has enough range to be easily monitored. The TP is likely a 100k since that gives a decent range at higher temps.

[@stephwaylonwells3218]

👍

[@ABC-wz2db]

How much more efficient is this unit with communicating vs 24v thermostat? If its been asked already ill find it in the comments. Thx

[@cc123456789]

The epoxy holds the two wires in the tube. Are the 2 wires connected together or do they need to touch the tube?

[@i.r.mrefrigeracion9985]

Esperando la versión en español del libro

[@gxdughat1592]

I am waiting this video india

[@whitesheatingairappliancer7101]

Whirlpool had us place them in ice water and ohm them out. It's nice we don't have to put them in ice water.

[@HVACRTECH-83]

You don't necessarily have to put in ice water but it would be the most accurate test, when calibrating or checking accuracy of all test equipment really, unless of course the instrument can't get wet

[@watdasantos]

Sir is ther positive and negative wire to the aircon sensor

[@JuicedupGorilla]

Hi, I have an old LG 12kbtu mini split system, got the led blinking error indicating thermistor of indoor unit is damaged. Can't find this part OEM, is it a good idea to just buy a generic one and solder the cable to the OEM connector? Any thoughts on this?

[@ititrainingcenter2095]

Cuando van a tener el libro en español

[@safetyalways7788]

please if the room has reached its desired temperature set by the remote control and the AC compresor doesn't shut off, which of these sensor is the culprit?

[@lakehouse9305]

Would very windy conditions make my unit run constantly in heat mode?

[@floridacoder]

I have a Eco-Breeze KFR-35W/GX1b with no fault codes. Been working about 10 years. Fans all spin up. One day it just stopped blowing cold air or hot air in heat mode. Checked the high and low copper tubes and they are at ambient temperature. Doesn't appear that the compressor is doing anything. Given that I have no fault codes, what are the first things I should check? I have manifold kit, multimeter, and installed it myself years ago. So not afraid to figure things out.

[@shamsheralam8862]

Very useful, how to access E book please reply

[@acservicetechchannel]

Its on google play and apple books, thanks!

[@cadamham]

Where can I buy meter leads that are small enough to fit into the thermistor wire harness? They are tiny

[@christiangv24]

Hi, in indoor we have 3 thermistor, all are 10koms ? Or only room is 10

[@sylwinkassem2274]

Hi Will anyone know where the sensor be located on a ducted air conditioning? I have a code in regards to evap sensor and would like to located and test it.

[@calholli]

I can't seem to find a thermistor for my GE window unit aew24dth1 .. I guess it wants me to get the whole control board? Is this normal or is there some other way to buy these parts? My thermistor is working, but it's out of spec and won't go below 72 degrees, no matter what.. So then the unit never shuts off and it will just continue to run until it ices over. I can't find one online

[@florinmangu371]

What is that metal clip called? at 2:19

[@letimend05]

My fridgiare ac unit has a code A5 which they told me its the thermostat sensor but not to sure which on exactly. The unit works i just cant adjust the digital temperature it just stays on. Can some one help me on this

[@user-cd1pg3ep9q]

Pls where can I get the book!

[@acservicetechchannel]

You can find our books on acservicetech.com!

[@josedelsonpadernal9019]

How can purchase that book and how much

[@acservicetechchannel]

available at www.acservicetech.com and www.amazon.com/shop/acservicetech thanks!

[@renecuevas4128]

77 room temp is equal to 10.00 ohms. But if room is 87 degrees will be 7.72 ohms if 67 room will be 12.72 and on and on.....

[@safetyalways7788]

Please what's the role of room temperature sensor? My ac compressor only cycles on and off when temperature is set at 25 -30 degree Celsius but if the temperature is set between 18-24 degree Celsius, compressor continues to run even when the set temperature is reached . I want to know the sensor that's malfunctioning. @RajonRabidash so what's the role of room temperature sensor? My ac compressor only cycles on and off when temperature is set at 25 -30 degree Celsius but if the temperature is set between 18-24 degree Celsius, compressor continues to run even when the set temperature is reached . I want to know the sensor that's malfunctioning.

[@JSFGuy]

🤔

[@ashwanidamani4284]

Bb

[@ARPCB]

🔥🔥I Am KZbinr🔥🔥 😍👉Mera. AR PCB Channel Hai👈#arpcb 🥀👉Mera channel Se Aapko help Ho sakta hai

[@indiantraveller194]

Very niece sir 😘🇮🇳

[@ARPCB]

🔥🔥I Am KZbinr🔥🔥 😍👉Mera. AR PCB Channel Hai👈#arpcb 🥀👉Mera channel Se Aapko help Ho sakta hai

[@ARPCB]

🔥🔥I Am KZbinr🔥🔥 😍👉Mera. AR PCB Channel Hai👈#arpcb 🥀👉Mera channel Se Aapko help Ho sakta hai