2008 Carrier Infinity and An Upset Customer!

[@MarcHord-mk5ff]

Press and the advanced button for 10 seconds. Scroll to service menu select it. Go to last 10 system events to check fault history.

[@bigdee8469]

Pro tip: hold down the “advanced” button for 10 or so seconds, and it will bring up the technician menus, which keeps a log of all of the system faults. Just make sure the date & time is correct to get an accurate timeframe as you can. The touchscreen tstats you have to hold down the Carrier hat icon until it turns green.

[@EverythingHVACR]

That's everyone else's answer.. it's low on charge or it's the TXV... that's why their everyone else, Great video!

[@johnnyp7707]

More bells and whistles more problems… my best seller is the merit series with Lennox. Straight cool and heat, single stage. Evap coils all across the board doesn’t matter brand or the model, they will have leaks due to cheap copper/aluminum specially around 04/08 during the r22/r410a transition. Higher pressures not meant for same designs. Good day guys!

[@sku32956]

Agree, the more sh... there is the more likely it will break down .

[@marcotorres5080]

R22 lennox running strong in Florida

[@johnnyp7707]

@@marcotorres5080 yep those beige 98-00s are beasts…

[@marcotorres5080]

@@johnnyp7707 like you said it's the high pressure 410a I seen 2 year old units with bad condersor and evap coils and now they are all aluminum

[@johnnyp7707]

@@marcotorres5080 yep…. Look at how long copper use to last on old Ge equipment from the late 70s late 90s…. Even copper is cheap and light as hell from china. Coil leaks on copper In Several spots on Goodmans and supposedly aluminum was suppose to hold better on higher r410 pressures but what a sad realization

[@robertlamey7612]

On those you should run it in check mode that way it in high stage

[@Ricky32908]

Single speed compressor, but I do that for all inverter systems too

[@logicalrat]

Infinity units are great when they're acting right lol other times I just want to pull my hair out. Last week had a 7 year old infinity with a bad compressor. Carrier recommends replacing the inverter board along with the compressor. Both of those together are around about $7k just for those two parts. Oh and it was a 2 ton HP with a factory charge of 14lbs. It was all covered under part and labor warranty but geez, just imagine how pissed the customer would've been if it was 2025 and not 2022

[@murkyturkey5238]

It’s a great system though, home owners should know it’s expensive to fix and not every tech can work in them

[@brandongraser2939]

@@murkyturkey5238 ya some brands purposely make there units hard to work on. unless you have been trained to work on it by the manufacture .

[@robertlamey7612]

@@brandongraser2939 all brands are headed that way. Soon you will have to be a dealer for a specific brand to get the need training and access to the apps

[@michaelkuprian01]

I had an infinity touch thermostat going to 00 then back to 72°. When this would happen depending on when the thermostat came back to 72° I would get a failed ignition fault. The thermostat is not on Wi-Fi so I am going to try to update hoping I don’t have to replace it

[@rgruenhaus]

No fix shown? I have that system and it was installed by a Sears authorized installer Stanard Heating Navarre FL. still working fine! Only had a capacitor and a heat strip replaced!

[@nsideguy1]

Looks like a 25HNB5 single stage Copeland compressor model coupled with a FV fan coil and controlled by an Infinity (Legacy) control. Control memory holds last 10 system fault codes. Also indoor/outdoor boards will blink the code that is occurring. Infinity boards are DDC and communicate by serial communication. If they can communicate each other, all operations cease. I suspect the Infinity control (UI or User Interface) was displaying "no communication). This is the most common issue with Infinity systems. The older units use a 4 wire ABCD connection. AB is the serial digital signal and CD is the 24 vac volts from indoor transformer to power all Infinity boards. If just one of the 4 wires are broken, grounded or high resistance, it will cause a communication fault and stop system operation. Varmets eating wire insulation, lighting, wire nut connections and weed trimmers are some of the causes. The outside sensor you pointed to was for non-communicating outdoor units. That unit already has one factory installed in bottom left of control box. It the sensor you pointed out is hooked up to sensor terminals on fan coil, it should be removed and reinstall performed on UI. If factory sensor in control box is defective, the sensor you pointed out can be used to replace it, but it must connect at the same terminal on outdoor board as factory installed OAT sensor. Both are 10K ohm negative coefficient thermistors.

[@nsideguy1]

If they CAN'T communicate system will not operate.

[@NekoIan66]

@nsideguy1 can the older Infinity control be upgraded?

[@nsideguy1]

@@NekoIan66 Yes, the Infinity legacy control can be updated. The Infinity -A and -B controls are backwards compatible to older Infinity equipment. However, Legacy controls can not operate the new inverter outdoor units since its firmware has no means to do so like the -A & -B controls. They are expensive. There are analog inputs on Infinity indoor and outdoor units and can be controlled by an analog thermostat, but you limit functions and features. FE fan coil burns the model size (blower motor size) into fan coil board memory when being powered up by In Infinity control. Once saved into fan coil memory it knows what size it is (it doesn't have a model plug like outdoor units). If you change FE fan coil board, you will need an Infinity control to communicate with it a least one time, when using an analog thermostat. If you don't, the fan coil will operate the fan speed for all modes in high speed fan.

[@nsideguy1]

@@NekoIan66 Analog control may require more wires than what installer provided.

[@zekemontgomery6678]

Superheat and subcooling will tell if you are dealing with a restriction (meaning air or refrigerant).

[@murkyturkey5238]

what?

[@mechmusicman]

I have a two stage Infinity from 2008. The evap coil was copper but with a steel frame. Electrolysis ate it up but luckily it had a ten year warranty. Now I have an error code 56. It says Thermistor. The only problem I find is at night I have to set the thermostat at 76. During the day at 79. It freezes me out if I don’t. I bought a new thermistor set. Haven’t installed it yet. Wondering if you just replace it or if there’s a setup?

[@llneumann]

How do you reset the infinity comfort control shown in the 2008 video

[@Salty_Vet_06]

I don’t think the unit was overcharged. Granite, I don’t know the outdoor temp on that day. But pressures didn’t seem too high. I see head pressure around 350-375 all day long in TN

[@Stevonoles1]

Granted!

[@adb99999999999]

That is a mighty interesting diagnosis from just a liquid line reading in isolation, without suction pressure or any temp readings and thus no known SC.

[@eugeniocruz3148]

I'm looking for a new leak detector for r410a. I being using my h-10 but I have to be right on the leak. How is that one working out for you..????

[@coldfinger459sub0]

I’ve been using the H 10 for over 40 years my dad trained me on it since I was 12 years old that’s what I learned to use from the very beginning and still have it today. I’ve had to DTek Stratus for about a year now. I’m really loving it a lot and I’m actually starting to find myself Grabbing it first over my age 10 especially for R410 But if you have a new sensor properly calibrated in your H 10. The H-10 is a little superior with CFC refrigerant like R12 and R 22 and others that are chlorine-based

[@georgegibbs8696]

"The more you overengineer the plumbing, the easier it is to stop it up." Montgomery Scott, Engineering officer on the Enterprise

[@johncspine2787]

Captains get all the glory (and sexy aliens) but the engineers keep the ship moving…

[@hughholt121]

Congrats to your UGA Bulldogs....National Champs . Great job by the little walk on kid from Blackshear ,Ga.

[@jrsmyth9761]

Based on the conditions, your charge looks about spot on!!! 52° ambient 75° indoor For those conditions: 109/412@ 80°IDDB & 106/369@70°IDDB While leaks were "found", it would appear that the last tech to charge the system did a good job. Usually, the little black plastic device mounted on that shelf in front of the board is the OAT. It connects to the outdoor board and then, in communicating configuration, it sends the info to the indoor board and then to the UI(stat). It could be that the OEM sensor failed or it was a very early version that did not communicate to the indoor equipment. Find where those wires terminate and then you will know. If they go to S1/S2 on the UI, it is for OAT. If not it could be for a humidifier or other device.

[@nategadow4482]

What does IDDB stand for? Indoor dry bulb?

[@garylewis8252]

I have a Bryant infinity furnace & AC. set the thermostat to 71, cools to 71 but keeps on running for a VERY long time. set temp to 69 does same thing. Any suggestions.. Watch all you videos, second to none. Gary

[@arthouston7361]

Even in commercial, I find some new installs with communicating thermostats. I have not found a brand of them that is not "junk." Even when they work, the intention is to become the source of replacement parts, instead of allowing for a stat of your own choosing. Since most of these systems use conventional stat wire, I bypass the Comm parts and install a conventional stat, and all problems cease at that point.

[@orlandojohnson5742]

Yep! The more spiffy the more inconsistent system runs! I like standard digital Tstat’s 1stage 2 stage etc! ECM motors they’re alright when they work…. A simple system is the customers best friend…. & mine too lol ✌️👌🙏🏽👋🏼

[@bill944]

With Lennox XC25 they have to use communicating tstats. I hate the communication systems with a passion. I want to see 26V, not PWM. Customers don't understand that It's impossible to determine if it's the tstat, furnace or condenser that isn't sending/receiving the operating signal and it makes a tech look like an idiot. Oh yeah, and tech support is usually good for an educated guess. Hell, I can offer an educated guess and don't need to sit on hold for 45 minutes to get it. Drives me nuts!

[@tommallette4438]

Yes that is a 15 SEER Single Stage HP Communicating Unit. I’m leaning towards a Leak in the Coil with added TXV Failure. Depending on your outdoor and indoor temps typically you should have had around 120 or Suction Pressure not 109.

[@jman0870]

Dude you’re splitting hairs if you are complaining about 11 psi. Super tuning does more harm than good 🤣

[@clayevans3421]

That coil wasn’t leaking

[@nsideguy1]

Al-bany Air stickers (Ed Newsome Jr) on indoor/outdoor unit. I'm sure you are aware that they are the Carrier Factory Authorized Dealer and I suspect they installed/serviced the system. Carrier distributor, Mingledorffs, also has a branch in Al-bany. They have had Infinity classes since 2004 when the control 1st came to market. There are Infinity training videos produced by Carrier.

[@williamtsol636]

It's incredible to see how cooling air got so technical ! Making ice is like sending a rocket to space now ! Circuit boards to cool air and freeze ice are a joke 😂 Engineers come up with new ways to achieve the same results !! It still takes the same amount of time to freeze water and cool air ! Nothing changed except the way to get there ! Energy efficiency is a joke too ! My mom has a 35 year old AC unit in Vegas that still works like a champ ! I was going to replace the contactor with a newer one till I realized the old contactor was still in great shape and and better than the newer ones ! They have turned the AC/heating and refrigeration business into a gimmick market ! 👍

[@fvfgx]

Infinity mean infinity problems Contactor has to be the right kind, hard Star has to be the right kind and all the temp sensors are 10k except the hot gas that's a 50k thermistor If the infinity stat doesn't show a humidity reading it's a dud stat And if you are charging the system it must be put in charging mode most people don't The DC communicating systems are just junk give me an old fashioned rudd heat pump because I see some that are still going strong that look like antiques

[@johnwalker890]

Good job Curtis.

[@keithfenley3358]

Not a big fan of that system. Only works with that special tstat. One of my customers tried to put his own stat on and fried the board. Had a lot of fun in a hot attic replacing it

[@Tyler-cf8jl]

I believe you can use either the infinity stat or a regular stat but you have to use different terminals

[@Leon5495]

Why didnt you just blast the coil with soap bubbles? Also, head pressure was high, but low side was a bit low. It rather looked like a restriction than an overcharge...

[@MartinLDeLoach903]

Dirty condenser coil will cause high head pressure more than evap, it will also lower the suction, may have non condensibales i.e air and vapor in it

[@musicnerd72]

Beat on it a few times.... Like an old '70's TV set... Yep, that'll fix it... Jeez.... You're definitely right about your job security! 🤣👍

[@roneilken6668]

Our 2008 which was meticulously maintained began the fail! They think it was the temp sensor which is now built into the compressor. We needed a new compressor but Carrier no longer sells those so we had to buy a whole new air conditioner! Wow- almost $8,000. And 2 years ago our thermostat failed and the new version was $800. Parts should be available mode more than 13 years! Stay away from Carrier!

[@kristalm349]

Buena tarde, Gracias por compartir su conosimiento, lamentablemente tengo un carrier infinity. Que marca recomendaria?

[@lidawang7374]

I made a mistake. I only want to replace a new thermostat and both AC and thermostat are working fine. An AC guy came in and he said he needed to check the system which I didn’t understand why. After he checked my system, now my existing thermostat showed system malfunction, I don’t understand because it has a been working fine until today he showed up. Anyone can suggest what to do? I don’t trust him any more

[@dmcreations7492]

How can you say the head pressure is high without even looking at the charging chart?

[@orlandojohnson5742]

That’s a gd question. If the system is running in cooling mode & the liquid line(from the outdoor to the indoor coil inlet is hot to the touch)…. It’s probably got high head pressure!! Over time some things you’ll know quickly! If u go to indoor air handler 1st on a no cool… touch the liquid line at the coil. If it nearly burns your hand: the outdoor fan isn’t running or the condenser coil is dirty(need to clean the coil) or replace dual/capacitor, fan motor, or check the wiring!? (But check the filter while your at the air handler anyway!?) LOL! When you become a veteran tech you’ll start on inside or outside…. & still wind up in the right place(source of the problem)! Use all your senses & common sense too. You’ll become a great troubleshooter👌👍🏽✌️👋🏼

[@terrisantiago9128]

I am getting to replace mine as it is ridiculous

[@donflash1128]

I have a question anyone...I need to add heat to a new attic bedroom I’m putting in.. it will be one room 200 s.f. Now and a possible 2 nd room in the future...I have plenty of room in the attic..and high ceilings..should I install a mini split...a standard furnace/AC...also there is plenty of room to install it upright..I should do that..correct?

[@tomtom1541]

Mini split will be much cheaper on running costs than a standard fixed speed unit. You could always get a multi split with 2 heads if you want to cool / heat 2 zones.

[@nolanharris640]

Installed carrier for the last ten years, when I see an infinity stat on a wall when I walk through the door I cringe.

[@Drumn4Him1]

😂😂😂 Love your comment!!

[@jman0870]

I’ll never forget the Bryant Evolution I ran into that had a fault that read something like “Blower not acknowledging commands.” I was a young tech and said fuck if I know and ordered an indoor board and blower motor. Came back, plugged the new motor in, and it didn’t fix shit. I was 95% sure it was the motor. Plugged the old motor back in and changed the board. Same fault. I said “Well, I haven’t tried a new motor and new board yet…” and proceeded to plug the new motor back in. Thing took off and ran. That POS was installed in an 80 year old woman living on social security’s house and the only thing that saved her from getting bent over was that she purchased a ten year parts and labor warranty. Had another Evolution that was energizing and deenergizing the reversing valve in a perfect rhythm. It was a bad thermostat. Those things were unreliable as hell and parts were outrageously expensive. Needless to say, I’m no fan of Carrier. In fact, I’d rather install a Goodman. At least the replacement parts are cheap and the compressor has a 10 year warranty.

[@robertlamey7612]

It’s not about cheap it’s about comfort for some people. They are willing to pay to have a system that actually can dehumidify on a user interface command.

[@jasonflynn3972]

I've worked on those models over the years. If it's the 25hna6 model with bristol compressor, it's a known compressor issue. Also typically on the first version of infinity thermostats they tend to lose communication with defrost board. Some times you will see reversing valve shift multiple times which will eventually kill compressor.

[@Chris2745100]

I have a 2009 version. Basically the same set-up. As old as the condenser is, I don't run it in heat mode anymore; just the furnace. I am afraid the reversing valve might get stuck in heat mode and fail to go back into cool. Its not a cheap part to replace.

[@Yeasty4twon]

The communication issues on all of their products suck. Fucking hate carrier/Bryant bullshit. Don’t even get me started with the heat exchangers.

[@MarcHord-mk5ff]

Bristol runs backwards to unload and it kills ‘em internal. About 10 years is what I see.

[@dmcreations7492]

Just hold they advanced button and go into system checkout why would you wait in the delays???

[@Paulie1232]

Shitty Techs kept me employed for 45 years...

[@MariosACandRefrigeration]

that condenser you have to cycle power to reset high pressure.check fan and charge.

[@mikestevenson1819]

2 speed Bristol compressor?

[@nsideguy1]

Bristol twin single. 2 pistons. Clockwise rotation it pumped on 2 pistons. Counterclockwise rotation it would drop off one piston and pump on one. I would give it an F grade. changed rotation by flip flopping start/run windings.

[@AMStationEngineer]

2008 would have been right around the time that "coil building vendor/sub-vendor" for several of the ICP, and their owner's other corporate lines, was in the early days of using that "corrosion resistive treatement" on the inside of the coils, which took out a BUTTLOAD of TXV's by most manufacturer's, even Danfoss. (their's was a "gummy, gunked-up residue/residual particulate matter" present on one I the TXV's which I did not/was not requested to return (back in the day). I wonder if this "minimal leak" condition is associated with that fiasco?? I'll look to see if I kept any of those picts???? I was somehow led to believe that the additive was added to the water used to 'freeze-form' the coils during their die-jig bending process. At one point, my former business partner (we'd owned a Carrier Dealership), changed twelve TXV's in one month, however, I don't remember him saying if 'pistons' were, or were not affected??!!

[@nsideguy1]

You're about half right. It was the compressor oil that caused the issue with the TXV's gumming up. It could also cause a heat pump heating piston not to slide back and forth during mode changes. There are service bulletins. They can be downloaded on HVAC partners website or call your local Carrier distributor for them.

[@dysfunctionalgamingveteran7753]

The company I work for is a Carrier fad. I myself have worked on the infinity that was about that old that was zoned. If I'm not mistaken you are correct with that compressor being multi stage. Getting bad vibes from that other company. Oh and go Dawgs.

[@nsideguy1]

Go Dawgs !

[@Eddy63]

Well , I guess Kirby was Smart enough 😂😂😂 Congrats for those Dawgs ...Good vid to ...

[@HVACGUY]

Yeh, finally…it’s about time.

[@wonderhomie2011]

Huh. Supprised they didn’t say take a hammer to the controller and the error could have been high head pressure if I was a betting man.

[@Stevonoles1]

That is a two speed copeland unloading scroll.

[@seangriffon6502]

The Carrier Infinity as well as the Bryant Evolution series are garbage. As you all know Bryant and Carrier are both the same now owned by ICP i think. You can only use these special thermostats, cant use an aftermarket. Also. I dont think this was ever made with a 2 speed compressor, i think it was made with a 2 stage compressor meaning a valve is used vs 2 sepatate motor windings. I have worked on a 1997 Carrier Tech 2000 Silencer System, and it had a Bristol 2 speed compresor and it had a giant circuit board in it as well as a ECM fan motor. The circuit board was bad and customer opted for a new unit with less bells and whistles on it as he had issues with the carrier from day one. What i think the othrr technician meant by tapping on the controller is because sometimes the relays can stick shut and cause mslfunction, and by tapping the controller it will free the relays, but is only a temporarly fix as the contacts are pitted. I have seen this with cheap thermostats the custer will say the heat or ac is running wild and wont shut off. If thermostat is issue, usually pulling off wall and tapping on the little relays will fix issue. I just replace the stat as it will happen again.

[@Gcanno]

One of the other techs I worked with had to replace a Stat on one of those years ago and it was a nightmare to get then to tell the customer how much it was going to cost .

[@nsideguy1]

None of the Infinity controls ever had a relay. It had a dehumidification feature that would allow the cooling system to overshoot set point by as much as 3 degrees to satisfy the cooling humidity setpoint. Homeowners or many contractors took time to read/learn how to use/configure these features.

[@Tyler-cf8jl]

I believe those units came in either a single or 2 stage

[@joeschneider67]

Press and hold advance button. I will tell you a bit more

[@thesilentonevictor]

A good days work a good days pay great leak search

[@orlandojohnson5742]

The CARRIER CADILLAC!!! Haven’t ran into many since the early 2000’s! I replaced the thermostat at a house few years ago …. After a PLUMBER(renting a house!) TRIED TO CHANGE THE BATTERIES ON ONE! HE BUTCHERED IT!! (they don’t have batteries for those who don’t know!)🤔🙄😤😂🤣…. Smh! I ended up installing a digital dual fuel thermostat on it instead! PARTS ARE EXPENSIVE ON THESE SYSTEMS! That thermostat (infinity control) alone out of warranty…. Probably $1,000 to $2000 dollars!!!!?!?!?!

[@rgruenhaus]

My infinity thermostat was $400, but the new WI-FI one is $800

[@raddadization]

Suction normal at 105😂. That’s what i hate that digital stuff. Right away you can see your coil is freezing

[@nsideguy1]

At 104 PSIG the saturation temp is 33 degrees. You have be a detective to determine if that is normal or not. If return air temp is 45 degrees, that would be normal. If the tech was familiar with the Infinity control, who would 1st looked at fault code history. Then checked the control to see what CFM the fan coil was moving. If control was in dehum mode, it would pump 275 CFM a ton...which could cause a low suction pressure. The subcooling and suoerheat checked and charge adjusted if necessary. If TXV super heat was greater than 20 degrees on that RPB TXV, that would be an issue. Another check would be to look at indoor control and make sure the outdoor tonnage is set correctly. Blower will only pump CFM to match what is inputted in user face control.

[@raddadization]

@@nsideguy1 exactly. Airflow issue . Don’t even need to watch the vid it all goes back to basics. If your return is 45 degrees and you’re running the AC, that better be a wine cellar.

[@tedhicks5431]

I'm gonna stick to basic 14 seer until they raise seer rating soon

[@briancarlisi2224]

Go Dawgs!!

[@HVACGUY]

Amen!

[@SquashysDaddy]

I dont know what you’re talking about! Tapping the thermostat a few times and putting it back on the wall fixes anything. Any A/C eng knows that.

[@apollorobb]

I bet the guy that told her to beat on it lives in his moms shack basement. Thank you for calling Tech Support

[@MariosACandRefrigeration]

8 k yeah.

[@MeMe-in8tj]

Ive had my infinity system 10 days and im fed up with it. App is worthless

[@stephenhunter70]

Lets put to much gas in and then wonder why we get to high a head pressure!

[@905Alive]

There may be something else going on there, I've been in HVACR over 50 years and was an instructor and a Carrier factory rep and I can tell you that most of the problems with our equipment is operator error and what I call Mekanicks. Too many hacks in this field, we had so many "warranty" calls on units because on install they never pulled a 500micron vac and had non cond's in the system. You should have been able to see the history of error codes, it should give you a date and time and what it was. In todays HVACR world you cannot work on anything without the factory training or being cross trained by someone who was. period.

[@nsideguy1]

Am I period enough?😊

[@gregbowman3598]

Job security 👍

[@biblebloopers946]

Please get yourself an ultrasonic leak detector. I promise on my life you will never use those stupid electronic toys ever again. Once you use an ultrasonic leak detector you will realize those electronic leak detectors don't work for shit. They are a waste of money. I will never use anything ever again except the ultrasonic leak detector. LOL I almost sound like an infomercial

[@MrDjmurdock]

Them old infinity units over sold, over priced and under preformed

[@rgruenhaus]

My Carrier Infinity system with heat pump was installed in 2007 and has only needed a capacitor and a mode switcher and recently a heater strip in the Air handler.

[@steveblake8766]

320 thumbs uP

[@nomadismileseeker6611]

Always be suspicious of a company who puts their sticker on a unit😂

[@mejesse809]

You can't make this stuff up, it's like a woman going to get her car fixed, fire the parts cannon HVAC Guy, ROLL DAWGS!