This one kinda gave me a run for my money, I realized the obvious condenser problems but than the other issues laid on top of that....
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MIRA LOMA, CA. 91752
I know you're not a tech channel in the slightest but seeing your S8 Ultra made me want to buy one and now I have one so thanks I guess
C
Thanks for the information. Could you please explain the dials, what is high pressure on that screen? Service area Kanata??
I don’t know why the unit is messed up I’m scared and I want to ask you the questions are you asking me
Thanks for the advertisements.
Man I have seen this many times on Lennox units, it is a plugged up condenser. But good video man
camera shutter rate and LED display refresh rate is what causes that inability to be recorded. I found it very interesting to see how the controller was refreshing the information on the display, which we wouldn't have seen if the refresh rate and camera shutter rate were in a better ratio.
Boy, we we had more techs like you in the cable industry, all would be well. TQA, all day.
Nice Laptop . HP? Service area Nepean??
I roll the same way one call at a time I'm not superman
My view on the core tool: yes you don't require it, but the time you save by using it, and the money you save to your client (which you don't have to pass the full saving) is very well worth the investment in the long term.
The alternative is to sell more parts, like the tee, plus the valves and all, or do the 'hackish' way (pump down and hot swap), or you may have to do a full recovery. For all of those options, it take time.
In the end, the customer pay less money, the technician spend less time so can do more work. The business ends up making more money while every customers paid less. Everyone win there.
Deteriorated condensor is not going to cause a massive pressure spike at startup. Seems to be the pressure eventually pushes out whatever is blocking it. Suggests whatever is blocking it settles in a low part of the line, and is semiviscuous, until the pressure eventually pushes it out of the way, but it will settle back. Maybe tarry oil in a part of the tubing?
I think someone else also said this, but over-torquing the fasteners is not the same as setting the correct tightness. If you install the fasteners with a regular driver, then go back with the torque driver and the fastener doesn’t move before the torque driver clicks, the fastener is over-tightened. You should install the fastener just barely snug, then use the torque driver to tighten it to specifications. Trying to use the torque driver to check the fastener tightness after the fact is the incorrect way to use it.
Your camera shutter speed isn't aligned with the LED screen, and that's why we can't read what is showing.
Recording Lennox screen, theory and solution:
In daylight there is "too much" sunlight for the sensor to get correct exposure for each frame at "normal" shutter speed (time). The camera restricts the light by ridiculous short shutter speed. The Lennox screen updates the display in horizontal rows, one by one. It lights up and shuts down all pixels at that row before displaying desired pixels for next row and so on, at a fixed frequency. The camera has a likely a fixed frequency – frames per second. It collects light at a different frequency than the Lennox screen, therefore it rolls and you see random rows from the whole screen from time to time.
The main thing is that human eyes has slightly "capacitive" sensor dots, like a medium fast fading memory. So these bright dots will all be visible for us at the same time, when it is actually flickering. The camera just shows the real deal and has some frame frequency conflict at the same time that makes it even worse.
If you restrict the light, put sunglasses in front of the camera. Then it will underexpose the picture, if it didn't adjust the shutter speed. It will immediately open the shutter longer time on each frame to compensate for the missing light and get more light from a longer period. Then it will see more updates on the Lennox screen on each frame as well. Please bring a piece of plexiglas with car window tint if sunglasses is not enough.
high sub cooling usually means overcharged though back to basics. If you noticed the super heat would also tank during that time. If the discharge and the liquid after pressures would track somewhat the same then I would go with overcharged. if they would go high on the discharge and the liquid after the coil would not spike with it then a plug in the condenser. Service area Barrhaven??
Micro channels are pretty sensitive to overcharging correct ? That oil on the lines is probably from someone gauging up to check charge because it was low from the leaking core max. I’d say the txv is keeping the evap at bay and condenser is slightly flooding. Just me guessing. I worked on a micro channel not to long ago that operated with a liquid line solenoid. It was slightly over charged and going out on high head before cutting out on low pressure. I recovered some refrigerant and never had a problem again. Not much room for condenser flooding.
You can improve the readability of the display by adding a polarizer or neutral density filter on the camera. That will slow down the shutter speed in the camera.
Not to be an ass but I’d say if your torque driver isn’t moving when you’re checking torque then you’re over torqued to start with and checking with your torque driver is an unnecessary step. I’d say the proper way would to snug them with a screw driver then seat them with the torque tool. Or just use the torque tool for whole installation. Just my two cents.
THAT WAS AN AWESOME CATCH!!! You'll remember this one for a long time. Are you in Ottawa ?
One of the reasons that I enjoy this channel is that you explain your business philosophy quite well. And, of course, you continually remind us about seeing the big picture both in word and in action. These apply to much more than HVAC work. Thanks for another good video!
Did you just say “WOW WOW WOW” like Borat ??
Is there a way to truly clean the inside of the microchannel?
Like draining the oil and using a solvent inside?
I'm no AC guy but most oils will turn waxy if they're overheating and it could be clogging the passageways in the microchannel.
Do they use a filter changing/coil cleaning vendor? It wouldn't surprise me if someone used the wrong cleaner and wasted those coils. 25 miles from the ocean around southern California is usually a little too far for away for that type of corrosion, imo. Also maybe they would approve a little plenum riser on that upblast exhaust fan? I bet 1-2' would make a world of difference in keeping that coil cleaner and happier.
If they approve the coil replacement, do/will you automatically replace the TXV? I'm with you on suspicions of a restriction. Coil or TXV, gotta be something funky going on. Are you in Nepean ?
Yeah, well, shoulda stayed in school and got a real job.
I really appreciate your videos. You teach always to look deeper into the equipment and go through it little by little to find problems that can easily be overlooked.
Wow im surprised they cared about the cooks i couldn't get any hvac repairs authorised
When u empty a bottle of zoom spout oil clean it and fill it with big blue it's a game changer. Best way to check for leaks
Those wires did not have their insulation rubbed through overnight. It's why it's always good to do visual inspections anytime you're looking in a unit. It was just an unhappy coincidence that they finally rubbed through and grounded to that tab on the compressor after you changed the contactors.. Moving the wires to do the contact replacement may have sped up the process a little. In any case always look for sharp edges that wires might rub up against in any equipment where there's the least amount of vibration.
Good stuff bud!!
Circuit 1 is overcharged , someone added gas .
You know (or should have known) that all of these RTUs are too far from the salt water for it to cause that condenser coil to deteriorate. Besides, if salt air WAS causing the problem… all of the other RTU condenser coils would have the same problem (corrosion). What REALLY caused the corrosion is that somebody sprayed that coil with chemical and didn't rinse it off causing it to crumble. This isn't my first rodeo.
Why not replace contractors with higher capacity ones so they can cool more effectively when cycling on high head pressure. In extreme heat areas, stock contractors are inadequate, especially if rapid cycling. Engineer here.
It's the TXV
As I said few days earlier on another video, that wiring practice in US HVACR equipment is insult to any electrical engineer! That wires should be cables and in wire conduits and trunks wich are properly fixed to housing. Are you in Orleans ?
call up trane. Iit's sporadic but I've been able to get rtus from them