HVAC: LG Multi V Not Cooling/Error Code CH75 (LG Multi V Error Code CH 75 Troubleshooting & Repair)
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- Опубліковано 15 жов 2024
- HVAC: LG Multi V Not Cooling/Error Code CH75 (LG Multi V Error Code CH 75 Troubleshooting & Repair) LG MULTI V Heat Recovery Heat Pump Not Cooling/Not Heating (Error Code CH 42) Error Code CH43 / LG Low Pressure Sensor Fault / LG High Pressure Sensor Fault / LG Air Handler Cleaning / LG HVAC Cleaning / LG Multi V / LG Multi V Heat Pump / LG Multi V Heat Recovery Unit / LG HVAC Maintenance / LG HVAC Heat Pump / LG Heat Pump / HVAC Service Call: LG Multi V Not Heating Or Cooling (LG Wired Thermostat Keeps Turning OFF and ON) How To Check LG Thermostat / How To Test LG Thermostat / Troubleshooting / LG MULTI V Not Heating Or Cooling (LG Error Code CH21) LG HVAC Troubleshooting / LG MULTI V 4 Error Code CH26 Repair (Inverter Compressor Overcurrent) LG MULTI V IV Compressor & Inverter Board Replacement (LG MULTI V 5 Repair) HVAC (Heating, Ventilation, Air Conditioning) Service Call: LG Multi V IV Error Code CH29 (Inverter Compressor Over Current) Error Code 291 / LG MULTI V 5 ERROR CODE CH29 - Outdoor Unit Inverter Compressor Over Current ( Outdoor Unit Inverter Compressor Fault Or Drive Fault) LG Troubleshooting / HVAC VRF VRV Training / (LG Multi V 5 Error Code CH26) / HVAC (Heating, Ventilation, Air Conditioning) / (LG Multi V 5 Error Code CH26/Error Code 261) LG Error Code CH21 / LG Error Code 211 / LG Error Code CH26 / LG Error Code 261 / LG Error Code CH29 / LG Error Code 291 / LG Error Code 21 / LG Error Code 211 / LG Error Code CH21 / LG HVAC Training / LG HVAC Troubleshooting / LG VRV / LG VRF / LG Heat Recovery Heat Pump / LG Heat Pump / #HVAC #LG #HEATPUMP #JUMPERMANTECH
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Thank you all for watching! This service call took place last weekend and has been running ever since with no errors. Stay safe out there & stay tuned for new videos every week🔧⚡️
My new favorite video of yours. The mentality of people from NJ/NY is “hustle hard” I’m on my 8th straight right now. Your videos are very inspiring bro. Keep up the great work and great video content. We do the jobs that nobody wants to do that’s why it’s so rewarding. You always will have my support my Eastcoast and HVAC brotha!!!!
I was nervous for you on this one wouldn’t want to drop something , you should throw down some cardboard or a drop cloth but I’m sure it’s along walk. Much respect keep em coming .
Great work Jumper Man. It's gotten rediculous with the technology, you have to be a HVAC tech and a electronics expert just to deal with it.
Blue donut in wiring, CT is current transformer. Some manufacturers will say CT sensor failure because no current is sensed - because inverter board bad, overloads tripped, or motor is shot. CT failure is a red herring.
Some systems are smart enough to have a known current range, so for example 6 - 9 amps, will give you a CT failure if you fall outside that range.
Ah yes another morning watching a MultiV fail. Gonna be a good day ☕☀️
Haha facts! Thanks for watching! 🙏🔧⚡️🤙
It surprise me that the electronic boards are not protected better in such a harsh environment.
The equipment I worked on for many years was mostly inside buildings, but still most of them had taken care of moisture and dust lucky me.
You aways make a good work and choice the best way to meet many different tasks😬😊
So satisfying to see the results when troubleshooting in a clever way.
Just think of all that money you would be missing out on if this was just contactor, compressor, fan. LOL
Current sensor should be the donut on the power cable? Blue one?
Connect your meter to measure points, then power up if you are worried about safety if possible.
If you are replacing that many boards you should ask lg to figure out a warranty solution. Insulation for heat, or something to redirect water away from sensitive electronics.
these units… great work JMT ⭐️
Lg continues to make money?)) In case of requaring dangerous electrical measurements I prefer use some probe kits with different types of probes like crocodiles, hooks, needles etc. Fluke have very good. They easily makes your hands free. Strongly recommend. Safety first! Best regards.
Hi! Thank you for your quality videos! Watching here from Sweden. It is really interesting how different HVAC- things and standards are on the other side of Atlantic Ocean. Here it is quite common with Heat recovery ventilation, and in summer Cool recovery ventilation. One thing I stumbled upon as an electrician, is your not so encapsulated electric motors and belt driven roof exhaust fans. Also the single wiring cables to different components in the HVAC units seems strange for an not American! :) Wish you all the best, and keep up with your great channel!
My Brother that place needs to throw in the white towel on this equipment and give serious consideration to what is there next step! That was a bad piping installation and even a worse start up commissioning that has led to all those failures! This can’t continue to go on. Time money repairs down time no heat no cooling these people need serous help
I want to name this customer the unofficial sponsor of this channel
So you had the boards already on your truck?
Any recommendations for a laptop , softwares and usb / terminal connection for the pc to read set points and troubleshoot for the most common manufacturers?
@Jumper In this case I doubt the inverter was at fault. That chip on the lower board is a inverter driver for the fan motor. That chip is almost self contained and usually can measure current itself. There is probably an additional sensor for the main board to check if the driver is reporting the right values. I've changed such a chip recently on a super energy efficient clothes dryer (
Man you never sleep they never stop calling 😂
Hey JMT,
Nice work and enduring patience.
Is this the same place where one condenser fan was working causing the other to dead spin?
Like the fan was turning but there was no power from the motor?
Great trouble shooting procedure,wish I could work with you.
I’m no HVAC tech, but as you say the board are very expensive, and the fact that you not check the CT/amp draw and check the motor before condemning 2 boards, is surprising me 😅
Great job. Suggest keeping cardboard or piece thin wood to put under yer work area. 😊
Job well done JMT 👏
to get an even better cleaning on the heat sinks use 90-99% isopropyl alcohol it cleans the past off good
Beauty supply carries 99%.
Nice work. Maybe unwind the wires from the reactor to allow sufficient slack to make the 15v check? Just a thought.
1. Why change the fan board?
2. Absurd amount of thermal paste.
3. What did you do to prevent that same kind of water damage to the boards in the future?
Seems as if these LG systems are piggy bank for you👍
Good job Jumper..........
Great video. Good job and nice work. Thank you for sharing
Helloo,what is the aplication you have in your cellphone.thanks
"LG HVAC SERVICE-BUSINESS" app for troubleshooting. Thanks for watching! 🔧⚡️
Was that really superlube you used for the heat compound? 😂
@markbell6864 It was😂 It's exactly what LG Parts distributor recommended 😂😂😂 Hawk Tuah & you're good to go 👍
That’s the right one. Used a whole box changing out boards on one site.
Maybe that’s why there boards keep burning up. Maybe they should use a real thermal heat compound.😂 Hell idk maybe it works great and it’s something else. I service a building with multi-vs but they are older than the ones you were working on and I haven’t had any issues with board besides a couple of inverter boards crapping out because of the compressor or vise versa.
CT ( current transformer), bill be a ring coil with wire going through the centre of it, and wires going from it to PCB
Good video.
Great job
Serviceability sucks on that LG Multi V
This place needs to get a different refrigeration system in my opinion maybe like a chiller this is horrible.
You need TYLENOL when you work on LG 😂
Nice man