No AC, Trane package unit not cooling 

Hi Bill, The double suction line is for oil transport during low load when only one evaporator is being fed liquid. Hence the low load one being smaller diameter, to get the gas velocity to transport oil. The the hot gas injection keeps the suction level above a certain level so the coil being fed liquid under part load does not freeze or cause de-humidification. That adjustable pressure valve opens below a set pressure in the suction. It's neat, don't see it that often. Good on you for pointing out that the equipment should be treated with respect, and that the next guy finds the job in good order. Like you say, the next guy is going to say: Bill was here................? Best regards, Duncan

Like they say "It's Hard To Stop A Trane!"........but it's even harder to get one started LOL

My dads worked on some big units like that, I have worked on many household units,(5 ton max) That 30 ton would intimidate the hell out of me! Thanks for being honest! New subby

The toggle switch next to your meter is used to cycle through the stages for testing . There should be a chart on the inside of the left door . Also some of the zone sensors will not be sending 24V to the board but will just show a different ohm value to call for heat,fan,air etc . We use a lot of 50 ton Tranes here and have a 108Ton also .

6:50 it's a head master... No not my sister; thats a different type of head master. It keeps the head pressure high when it's cold outside. It's hard for the unit to keep proper head pressure when the outdoor temperature is colder than the box temperature. Units are engineered to operate for the outdoor temperature be higher than the box temperature. So the valve (head master) allows some hot gas to bypass the condenser and dumps it directly into the reciever to keep the head pressure up (when it's cold outside). Love your channel!

I really appreciate the videos I’m new to package units and your videos have been gold I love the honesty you don’t seem like an arrogant know it all

I retired from the post office a couple yrs ago. We had more than a few of those. Seems like we had a lot of thermostat issues with those. The PO ran the shit out of their equipment. They always left their dock doors wide open to the exterior and there is always a lot of paper dust in the air. Good job.

Those Trane Voyager units are pretty cool, i remember the first 160 ton inteklipack 2 I worked on, now that was impressive unit!

There alot of good guys on RU-vid for HVAC. But the only guy that I can relate to. Love the hat thing and good job man

We did a helicopter lift of 14 of those. Covid units. Had many blower bearings fail right away. One blower wheel blew apart. The warranty blower replacement was fun. Comes in pieces. Gooooood Times!

I use the same meter that you show in the video and I like the fact that its compact and has the magnet on the back to make it easy to read and use with one hand.

Great mention about checking y to ground or to common. One thing to remember is, the control transformer windings are not grounded. So why check to ground, unless checking for winding to ground short. Hope this was helpful.

One of the best books out there.

Very good video and instructive thank you and god bless all your teaching

Excellent job, good diagnosis.

Took me the entire video but i finally recognized what business this is.

Nice job sorted well . Sometimes you havd to step back and rethink.

Great troubleshooting!

Good detective work.

Thanks for the tips bro!!!

I’m enjoying watching your subscribers growing, well deserved bud, take care on this holiday weekend !!

Like your professional work ethic. Should always clean up your mess it's not your home (I hope its not that bad though seen some hmmm) its a work space, even truckers for the most part are cleaner.

That TX valve and bypass valve in the copeland unit is usually for liquid Subcooling used typically in mid to large scale refrige when the condensor liquid is too warm when going out to the field and needs extra chilling. :) --Australia

Great video!!

Cool brother Nice diagnosis Zone sensor not programmed correctly Cool man

Good job.!!

Double suction riser.... de-superheating valve to prevent high compression ratios. Company called rawal makes them.

Good stuff here. Thanks

It’s a Trane thing with the chain.

And that's why the nicer thermostats have password controls :)

I worked on some Tim Horton restaurants that had that setup for the Iced Cappuccino machine. The double suction line was for oil return. The unit on the roof never shut off, so when the unit downstairs satisfied and closed its valve the unit on the roof had its own 2nd txv to use. It was all massively oversized so they could draw product continuously.

Wow man never seen either one of those in the wild..great video

I work for Trane as a controls tech. These units can be a nightmare for start up techs sometimes.

Your one effect dude !!!! Nice work.

Double suction line could be another evaporator on another box. liquid line would have to split somewhere also. Both evap coils would have there own thermostat and pump down valve. the compressor would be controlled by pressure switch. as long as one box is calling for "cooling" the compressor runs. The satisfied evap would be the same pressure as the one still calling for "cooling." When both satisfied compressor goes off on low pressure. Used to be quite common to run multiple evaps on one compressor. Big draw back; compressor goes bad all boxes go hot.

ya, a double suction header. normally for oil control under low load conditions. we dont run into it much in my area/ on equipment we service since we dont really do much with coolers/ freezers. however older larger split systems that control capacity for comfort cooling or even chilled water for remote barrel or plate frame. normally found on r22 systems or should be anyway. sometimes its spect for 410a depending on condenser location. For example, some York commercial splits if the condenser is x amount of feet above the evaporator, (normally several storys) then they want to use a double suction header or oil separator. I have one account with a set up like that is 2 stage and has a oil separator on it that we installed for the installing contractor due to the condenser being 60 feet above the evaporator so it traps the oil and dumps it back to the compressors.

I'm a foreman and if my guys want to smoke, they sure as hell dont do it on the customer's property. I make em smoke on the street.

I used to work on a lot of those.. I also worked on stuff LOTS bigger.. 100 ton "Mammoth" brand units with Trane Varicone .. the mammoth units were circa early 90s...

64° and not cooling? . 30 tons . Tranes I do daily are 60+ . Up to 110tons. All vavs. Building automation. Nice video.

Good job

Great video buddy! I had same issue with a venstar t4900 stat. It was way too cold. I found stat was not reading remote sensors😂 with venstar, a degree icon is flashing on screen which tells you reading from sensor but degree icon not flashing means reading from stat. I wonder if Honeywell has that same feature?.😎

Thats actualy a baby intelpak. Use to walking up on 100-200 ton models. They are intimidating the first time you walk up to them. Well built machines. The RTRM units are much easer to work on then the older UCP ones. They also use a controller that the buttons like to stick on on them and the chillers.

This is in Monroe. I was working on this bad baby the other day. They always knock the sensors off the wall in this building.

Bro, you've got a voice for radio.

That chain does come from the factory. I've worked on a few 50 Ton Voyagers, and let me tell you, when you got those Behemoths, sitting on top of an old curb plus a 24in curb adapter, those chains make life a hell of a lot easier. XD

This is small compared to the units I work on just by your video I sense very inexperienced but keep learning this job is really good pay especially when your in the 45 per hour pay rate working for a company and when you open your own place 125 per hr but learn the equipment be your own boss when you learn the equipment you pave your own path keep it up

Shoutout to the TA truck stop 🚛. I wonder if they still have Flying J’s out there.

Flashing that curb looks like a pain. I see these huge units all day considering im a commercial roofer. They definitely get bigger than this one, connex sized.

Nice video ,,,,good explanation,,,,,,make one video whit external static pressure I whant learn more that,,,,

Good work bro

I think the small suction line on the equipment with two suction lines pulls from the bottom of a trap downstairs to pull the oil up stairs ...

Was working on a 50 ton like this today. They are mean. Needed a 12" ladder because the the curb was 3". 20hp blower

Nice video, I always leave a calling card.

“I never seen one of these in a while!”?lol good shit brah!

Double suction riser. Depends on length of vertical rise. Thats wrong. There's no solenoid on a suction line. If you shut one solenoid the condenser would pump down. The only reason its there is bc of oil return. Its in every heatcraft manual and explains it in depth

Lol that’s for low ambient on that condenser. It just bypasses the condenser coil on cold days to maintain suction pressure.

Was the smaller unit beside the package unit part of the ice machine? I installed a small one like that but it didn't have two suction lines... just wondering

On that Copeland it looks like liquid injection for lowering the hot gas temp. Oil dont do so well above 250f. Kinda different to see a hot gas bypass(capacity control). Usualy on a low temp i see head master and liquid injection with ct activated switch. Long vertical rise having mutiple suction traps and or double suction lines to bring oil back to compressor after defrost. Its a bad day when you have a liquid line solenoid leak by and migrate off all the oil. If compressor is low on oil need to fine out where its at. Have replaced a few compressors before and had to pull twice to three times the sump worth of oil. Always tear down a ironbody to see cause of fail. Kinda hard to cut open a tin can or scroll.

Hope you know that brown board on the right side of electrical panel (had 2 on this unit) is your test board. Idk wym by bypassed in the video but you could of put a screwdriver or jumper between test 1 & 2 and you take it off every time you hear a click wait to see what come on (heat , stage1 cool , stage2 cool or both cools) first click is always blower and the steady green light on RTRM board will change to flash when you do this.

Hot gas bypass head pressure control system. The txv may be to meter liquid into the suction line for compressor cooling.

Nice video 👍

Thanks for another great video. I appreciate you uploading these! You can't put a price on how valuable they are, I really mean it when I say "Thank You!" I have a question. My question is, can you check voltage between R power & Y1 ?? Or do you have to go between Y1 & Common? Thank Again, & please keep the videos coming😎

Very good

Yea. I built refrigeration units both chiller and freezer units here in New Zealand

You are suppose to use an inverted trap for capacity and if the evap is above the condenser

Those are trashie Tech's , Good job taking up for them .

Hot gas bypass maybe ...couldnt tell from video. Also, ever heard of NFPA 70 E...?

Hi, ist daikin package 12 tons butter than other brand ?

Makes you wonder if the zone sensor was bad in the first place. Maybe the tech didn’t check the readout designations.

What is the design static of that 30 ton unit? I am curious myself!

The toggle switch on the left side of the control panel with cycle unit through test mode.

That switch next to your multimeter is a test switch you can use that to stage the unit instead of using the thermistat

Is it just me or does his voice sound like Mike Rowe's voice in Dirty Jobs or whatever that show was?

👍👍🔥❄

Looked like hot gas bypass with liquid injection. That would make sense for the double suction riser. I'm not 100 percent sure though.

dude, i'm a smoker, and I would definitely not be even smoking around a customer's unit, let alone leaving my butts in the machine!! that's just bad practice :(

The blower was clean as a whistle!

Are those thermostats smart enough that an open zone sensor will make them revert to local temperature sensing? The previous techs error may have been he failed to realise this and didn't reset the thermostat to remote sense. Totally agree about being a pig leaving buts inside the unit, could have been worse and been in the evap fan area I guess.

I'm looking for a new multimeter. What one do you recommend?

2:15, it's a Trane thing. Intellipaks and larger voyagers.

#60 Thumbs Up

What did you find was the reason why the compressors did not come on at initial startup.

That’s called a double riser for improved oil return to the compressor.

And a desuperheating valve

That unit is nearly brand new, usually, dust is your enemy on these things.

I think you would like the much larger 162 ton rtu trane intellipak, and governair units that are even larger

I will send you some pics this weekend if you want to see some bigger units

I think we have a case of Inexperience.....

That area where the zone is at may be picking up heat not a good place . Wanna be able to read air flow .

As for the small condenser with the duel suction line it’s critical how you get oil back to the condenser inverted to on top and p trap on bottom sorry if I sound rude I just remember when I was at your stage now I work up to 650 ton now and believe me when you see a unit that has 1500 pounds of refrigerant it’s an experience

Probably that condenser is a Russell high Sierra with a hot gas defrost

Hi, how much it cost this unit without install ?

Ah, custom build Trane. Goodman couldn't build one of those in their wettest dreams. And if they tried, they'd secure the blower with #8 5/16" head zip screws. LOL

Trane does provide some sort of door stay. It could be a chain or a hook.

I worked on one of these not to long ago It never worked in heating mode from day one with a little help from tech saport we resolved problem the problem was control wiring between pcbs was incorrect In other words you're J connectors were going to the wrong places on the boards these units are hard to work on and there's very little information out there at least it was in my case it took several phone calls to train before we could get the right guy to give us a hand

good ol voyager 3

what you are doing wrong is goring your bird bro..hahah, keep up the good work and be safe..!!

no challenge too big with the beard of knowledge mint

Those black covers are covers for the relay covers..They must forgot to put them back on..

On which page is that in the book and what’s it call.