Daikin VRV III / Inverter Compressor & PCB Replacement on a VRV System - Part 1

[@Hoppa12345]

I was reconstrucing a VRV2 407 machine. Which i had in my workplace when i INV compressorreplaced, oil seperator and capillary tubes for oil return. a crane went right through it when put it back on the roof. So ended up replacing the condensor, fan, fan motor, 4way valve STD1 compressor and casing. I made a video of it which i will post at some stage what a work. Machine is running in my work place. When people ask me why not to replace such an old system, Pipe work in the building was all inside the walls. no way to replace suction pipe for a smaller one to get oil back to the roof with a 410 vrv..... Its some work but nice to do....thanks for this video. Mades me remember the nice parts of job.

[@hvacraustralia]

Oh awesome, I’d be keen to watch the video! Massive job mate. Yeah, it’s usually the same situation, pipes run internally etc. The repairs can be fun jobs though.

[@LC-qi5ff]

Excellent stuff. I had a chance to replace a toshiba vrf compressor this week but passed it off to a subbie. Kinda wish i’d done it myself now! Need some of those hoses too

[@hvacraustralia]

I’m yet to see a Toshiba VRF. How are they to work on? The company has a set. They’re great for jobs like this. I’ll have to get a set of my own one day 😂

[@LC-qi5ff]

@@hvacraustralia similar to vrv 3 pipe and then theres a balancing pipe between outdoor units if you have more than one. The outdoor main pcb has rotary switches and a display to show you data across the system and the indoor controllers show it also. Fault finding wise theyre pretty good.

[@hvacraustralia]

Sounds good. Hopefully I come across them, I’d be keen to work on one.

[@michaelalbertyn6329]

Awesome video. Just a thought ,to find out how and why the compressor failed,the oil return lines and oil filter can get blocked by the oil receivers.unsweat them and blow them out.there is one for each compressor.

[@hvacraustralia]

Thanks mate, glad you enjoyed it. This particular job was quoted by another tech. I did confirm the oil return lines weren’t plugged after replacing the compressor. If I ever need to replace a compressor in a Daikin I’ll always replace the oil line too.

[@IgorBond]

Hello friend! Tell me before pumping out the gas from the entire system in the cylinder, did you perform an operation to open the electronic thermostatic valves in the system so that everything was pumped out and nothing was left? Thanks for the answer and of course thanks for the good video.

[@hvacraustralia]

Hey mate. Yes, I put the unit into Mode 2-21 before recovering the refrigerant. Glad you enjoyed the video mate. Cheers.

[@missionuluna5837]

Excellent job brother ❤🙏👍🇵🇬

[@BrannndonM]

The second you see blue leak lock you know there’s dramas ahahha standard

[@hvacraustralia]

100% 😂

[@Andy-mu6ol]

Good video mate, just wondering do you not replace oil capillaries/filters when fitting new comp? I do this as a standard now as had issue in the past with burnout contamination.

[@hvacraustralia]

Thanks mate. I didn’t have anything to do with the original fault finding or quoting this job. I definitely would replace the oil return lines if I was raising it originally given how easily they block. I’ve heard some fun stories of that happening to guys. Nightmare 😂

[@bluecollardownunder3616]

hey mate have you tried the BLUEVAC FAST VACUUM?

[@hvacraustralia]

I haven’t used them. The set up looks great though. I use the Appion vacuum rated hoses with their Schrader core removal tools.

[@gerardochieng4097]

Hi, great content, man! New tech here, aam! The setting you did before you put the unit into recovery mode. What setting was that for? And after you have finished recovering the gas, do you isolate power immediately? Kindly advise. Thanks

[@hvacraustralia]

Hey mate. Thanks, glad you like the videos. I was actually taking it out of emergency mode. With Daikin VRV if you have an issue with a compressor/unit you can place the system into emergency operation to bypass the fault comp/unit. You don’t need to isolate power immediately, but I would have done it soon after as I didn’t need power anymore to carry out the works.