Frozen Air Conditioner Multiple Issues
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- čas přidán 7. 05. 2021
- I am on a no air-conditioning service call. As I arrive and look at the unit I find the air handler evaporator coil is all iced up. I shut the unit off and go outside and check the AC Condensing Unit. Ice is outside on suction line until it reaches the compressor. Therefore, I pull the disconnect and test contactor, verifying it didn’t get stuck. Next I go inside and find a zoning panel. Then I find a zone damper that a wire fell off. I fixed the loose wire on the HVAC systems zone damper. I return the next day to find refrigerant charge low. I leak search the unit and locate leak on condenser coil. I recharge the system for temporary cooling. Then sell them a née condensing unit.
- Věda a technologie
Always good to hear you fixed a problem that has been existing for years. Great job
It’s why customers should tell a tech there for maintenance that a problem is present. If not most won’t do much than clean and test air handler.
@@thehvachacker absolutely, it has the potential to open the door for additional corrections and extra earning potential
The Hacker is great on repairing complex issues !
Just enjoy taking care of problems
Hacker is on the same league of champions in the hvac field as other channels on here. How come this man does not have half the amount of subs that them other guys have? Hacker always makes quality videos!
Thanks, I think it could be the name. I don’t think I am listed or considered an hvac channel. Oh well I just put my vids out for those who enjoy.
Ya I watch Hacker and the other guy. I think other guys advertise on TruTech, other websites, and seek out sponsorship. Hacker says he won't promote any ads on his show. Plus its a lot of hours spending time editing videos. I like Hacker he does Residential and Commercial.
He will get up there eventually if he's honest, not obnoxious and uses a tripod. Speaking of honest... did you see the latest? Crazy shit out there! czcams.com/video/hxnfRiq23Zg/video.html
@@thehvachacker I think its the name. Your vids are as good as the other guys on CZcams. Keep em coming.
@@homeserve9292 NJ and NY (southern NY).. nobody likes people with bad attitudes. Lol.
Nice troubleshooting and being through with looking at all the possibilities for a frozen unit.
So many guys would have just shut it off and come back later. Very few techs actually check out the mechanical stuff on a frozen coil. So lazy.
Ahhh, the beloved micro channel leak! Dang I hate that stuff. I cannot believe that's the direction the whole industry is going in. Everybody's starting to use micro channel.
And that was a beautiful frost ball on the line set. I had one that looked just like that last week. At first when I came around the back of the condos I thought someone had laid a piece of PVC pipe over it because it was so pretty and Snow White .
Pros and cons with micro channel- but that office should be on a cleaning maintenance schedule. No excuse for that level of dirty condenser regardless of micro channel.
+1 cant stand the microleakchannel!
They are set up for a coil cleaning and ac maintenance next week. Due to COVID they didn’t have maintenance last year
Good find. Life would be so much easier if install crews knew how to operate a Sharpie marker and put a few notes on the air handler/furnace. I know, most of them will never see the equipment again and what they install will never drive them nuts.
Yes life would be easier. Also if t-stat wire and all other wires weren’t ran in bx. Harder to trace and follow wires when lots of armored cables ran together all over
Wow, sure glad I don't have to work on that one. I feel for you young men. Condenser doesn't look that old, I guess they are making junk these days. I am an old guy who is retired.
Wow you are amazing hacker! Good job on safety diagnostics as well!
You are a smart ac tech sir
Thanks for the info and video.
Congratulations Bill, so you're the first real HVAC tech they have seen in a million years? Nice work,
I did commercial service work for several years. Last 18 years Ive been working at one large site but I do miss the detective work required to find the issues and dealing with different types of people...
Good work Hacker. There on the Zero maintenance program.
When customers just yap away
“They only go here, I’m serious, like yeah I don’t know how many times they came and they only go here and there I’m serious”
You think maybe you support the armorflex cable with a strap to relieve any tension on the control wires so they don't get tugged loose from the connector block?
Nice troubleshooting
Thanks i enjoy solving problems
I had frozen coils on mine once and it was because condensate drain was blocked and water leaked onto the AH filter. Usually frozen lines = a refrigeratant leak, low on charge, or bad filter. In my case it was a wet filter.
Wet Filter blocks airflow the same as a dirty plugged up filter. Frozen lines are from the symptoms you listed. With one added scenario: system left on long time after the evaporator froze. Many don’t shut down the system when it’s not working.
Could a leaky Schrader valve cause the compressor to not work
I did find one with intermittent cooling. The compressor was dirty and the indoor coil was plugged. I had a whole day of work at a storage place as a follow up and another unit had a transformer burned out.
How did u clean the compressor
Compressor leak is what froze pipes, the other thing was extra .. 👍
My Mac once in a while froze like that one you work on I turn off the compressor because it kept running and power off and on the thermostats and it work again
Is that what I suppose to do sir because expert ac guy don’t know
I see where they are phasing out HFC refrigerants. Glad I stocked up on 134a on Amazon for the old Expedition. You know the price will begin to go up now.
I recently bought a Chinese made window unit for AC backup to be run by a generator in case of power loss during a hurricane. It warns not to puncture it due to possible fire hazard.
I should stock up in some 134 for my Astro.
@@thehvachackerI've used propane in mine in the past when I was broke. It works pretty good
@@Bryan-Hensley - I’ve heard of using propane on older R-12 systems because pressure/temp relationships pretty close but I’ve never heard it used in a R-134 system.
I just fixed up the ac line frozen because the renter set up the wrong temperature two hours ago. I took less than one hour to turn ac on.
The unit is a micro channel.........JUNK. That's why the unit is freezing up. It's low on refrigerant.
Yea it’s junk, too bad it’s all the manufactures, want to make these days
Yes, I agree with you
I'm gonna recommend changing this perfectly fine functioning contactor.....
Contactor was overheating and starting to pit. I never got to recommend that since the whole unit had to be replaced.
It’s called “preventative maintenance” for a reason.
Great video. My suction line is frosting up. Indoor temperature is 75F and outdoor ambient is 70F. It's r410a with low suction pressure. The low side saturation temp is 28F. I am getting low superheat but normal subcooling with fixed orifice. Filter is clean and air flow is good. The coil has no frost but frosting just before service valve at outdoor condenser. All amp draws are good. I tried adding some refrigerant but the low side pressure would not rise. I just can't figure this one out. Any help would be greatly appreciated. Thank you.
Is the system overcharged? Low superheat seems like an airflow problem or overcharged. Is evap coil possibly dirty? Subcooling not that important with fixed orfice. Superheat is used for charging piston systems.
Thank you.
Just one damper not opening can cause it to freeze up? I believe you. But could you explain how? Is it because the thermostat for the area couldn’t ever satisfy?
If you have no air flow what happens to the evap coil? It freezes. Therefore if all zones are closed and the ac is running you have no airflow. That causes the coil temp to drop below freezing and start icing. Yet that was a symptom. Not the main reason for system freezing. The main reason was revealed later in the video
Not enough air flow over the inside coil will cause it to freeze so if that zone is calling and no others are then the air is going nowhere and will freeze the coil. Lucky for her other zones seem to be calling more but the system would never shut off too.
Looks like micro trash I mean channel👀🏌🍇
Stay safe.
Retired (werk'n) keyboard super tech.
Wear your safety glasses.
I should wear those glasses but with mask even the fog free ones build up condensation
8 years wow that red and green light been off for a long time
I think the lady was over exaggerating. Yet it was what I was told. That is the reception area printers and about 6-10 people at all times
Hackster making NJ cool one unit at a time ... Lol ... Good troubleshooting ...
Thanks I enjoy interesting calls
5:54 Nice diagnosis. If you want to be a great technician or scientist- slow down- think- work the cause and the effect. One of your better vids. Get the wago lever connectors brand (germany ) by them from an electrical supplier store unless you can verify the amazon seller (there's china knock-off wago's). That HZ2432 board was installed in an inappropriate service area, IMO. On another note a doctors office should have better clean air manage ment standards- can only imagine the bacteria, virus, mold etc in the air handler/duct system.
Haven’t watched video but contacter is either stuck or defrost board is bad! Run it in cool with no g call it’ll defrost it
Leaking
You didn’t offer to clean the condenser?
I didn’t have enough hose, needed 300 ft. Don’t carry that much unless I am pressure washing coils
Wait soo why did it become frozen ? Bc the contractor started to go bad ?
No, the zone control was stuck closed because of the fallen wire and it causes an airflow restriction which causes units to ice up. The burned contactor isn’t necessarily a problem because it’s still kicking in and out when he takes off the thermostat wires but it is an indicator that something is over amping and 90% of the time it’s the fan motor
Can a bad thermostat cause freezing?? If so how?
Your amazing 🤩 wow incredible find😎🤩
I suggest pulling out the entire terminal, tighten wire, reconnect terminal.
Mybi
"Yo Ninzio the Dampa was unplugged.... ohhhh!
#21 Thumbs uP
Low gas
Yes
Stuck contactor
Another York micro channel disaster 😑😕. Worst leaker awards Olympic style. Gold medal goes to Yorks micro channel, silver metal goes to Lennox and there 2014 class action coil law suit and there still leaking 😆 and bronze goes to Goodman/Amana because there still crap.
You hit the nail smack dab on the head with that comment Patrick. You are exactly right. In that exact order too. How has it been this many years and Lennox has still not fixed their indoor coal issues? They deserve to be sued. It is ridiculous how bad the issue is and has been for so many years. 😎👍
@@sknight0391 around here builders have built many new neighborhoods with all lennox unit. Guess I can't be to upset. It's work all the way till I retire and I'm 38. 😆🤣😂
I the new aluminum coils seem to hold up a lot better. I think electrolysis could be a factor. Most Lennox leaks are back corner opposite of drain side near bottom. Right where the copper goes through the steel. We will see. I don’t think the class action lawsuit was 2014, units covered many years after that. I think 2014 was the Copeland compressor sludge that took out many txv’s on Lennox units. Yet time goes so fast it could of been both.
@Eric M alu tube and fin type are somehow ok ish. But the microcrap is a disaster.
first
Congrats
Definitely a hack. You never turn off unit untill you know whats wrong with it.
All he did by pulling the disconnect was turn the compressor off. Control side was still calling for cooling, which he demonstrated by testing the contactor.
There was no benefit to leaving that unit running, as it being that frozen up would cause low pressures and hide the refrigerant leak. Best to turn off the compressor and let it melt as soon as you can.
Obviously doesn't apply to all situations.
Won’t apply to a furnace fault. Most modern high efficient systems will save their precious 5 or so faults. Yet a frozen system can’t be worked on.
I love how people think I am really a hack. Then show off their lack of knowledge/ experience. As they try to prove what I do as wrong. Everything I do is by code, or what’s best for my customer.
Pretty damn obvious that the unit is frozen. The unit has to thaw before refrigerant side is serviced. Yes a low charge can cause this but a shorted contactor, blower motor issues, etc could cause this. Hacker did a great job, stick to whatever it is you do and leave the technical HVAC to us professionals. WELL DONE HACKER, DON'T LET THE ARMCHAIR MASTER TECHS RUFFLE YOUR FEATHERS. CHEERS FROM L.B.I.N.J.
Wtf are you talking about? Lmao. Shit is frozen. You don’t need the compressor running. Clearly it’s working cause if it wasn’t it wouldn’t be frozen 😂😂😂😂. I hope you don’t work on AC
Bla bla bla not my problem 👎🏻👎🏻👎🏻👎🏻
Snowflakes will hate. I did all I could for this unit.
@@thehvachacker condenser on its last legs for sure. You did all you could🤙🏻 let them hate bro. cookie cutter techs all sound the same🤡