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HVACR AUS
Приєднався 28 жов 2022
Commercial HVACR technician from Melbourne, Australia.
Mitsubishi Electric / Leak Search on a City Multi PURY-YNW
I found this City Multi to be running short of refrigerant on a maintenance.
Переглядів: 1 192
Відео
Fan Coil Unit isn’t Heating the Surgery Room
Переглядів 915День тому
Service call for this FCU not hearing an IVF surgery room.
Daikin / Compressor is Ramping Down After 10 Minutes
Переглядів 4 тис.14 днів тому
Complaint was the system wasn’t heating the space. Previous tech, after repair a leak, noted that the system would run at maximum hertz but after 10 minutes would ramp down.
Multiple Issues at One Site
Переглядів 1,5 тис.21 день тому
Spent the day at this site looking into a variety of problems.
Temperzone / Replacing a Drive Pulley on a 65kW Package Unit
Переглядів 1,1 тис.28 днів тому
Found on a maintenance that this drive pulley was worn and required replacement.
Daikin VRV-S / New VRV-S System isn’t Heating the Space
Переглядів 2 тис.Місяць тому
I was sent to site to suss out if a VRV-S systems temperature issues were related to install or to the connected BMS.
Daikin / 27kW Package Unit is Covered in Ice
Переглядів 3,7 тис.Місяць тому
Service call for this Daikin Package unit not heating properly.
Fujitsu Airstage / Pumping Down a 3 Pipe VRF to Add an Extra Indoor Unit
Переглядів 1,6 тис.Місяць тому
Pumped down this Fujitsu Airstage Heat Recovery VRF to allow our Mech team to add an extra indoor unit onto this system.
Apac / System Ran But Then Blew an Outdoor Fuse
Переглядів 1,4 тис.Місяць тому
Previously tech said system ran fine in it then blew the F3 fuse on the outdoor PCB.
Mitsubishi Electric / Fan Replacement on a PUHZ-YKM & Static Pressure Measurements
Переглядів 1,4 тис.2 місяці тому
Mitsubishi Electric / Fan Replacement on a PUHZ-YKM & Static Pressure Measurements
Mitsubishi Electric / Replacing the Outdoor Coil on a City Multi VRF
Переглядів 2,5 тис.2 місяці тому
Mitsubishi Electric / Replacing the Outdoor Coil on a City Multi VRF
Daikin / Repairing an E3 Fault on a Multi Inverter
Переглядів 2,3 тис.2 місяці тому
Daikin / Repairing an E3 Fault on a Multi Inverter
Mitsubishi Electric / City Multi VRF 6831 Fault Turned into a Lot More
Переглядів 2,4 тис.2 місяці тому
Mitsubishi Electric / City Multi VRF 6831 Fault Turned into a Lot More
Mitsubishi Electric / City Multi VRF Leak Repair - Part 3
Переглядів 1,8 тис.9 місяців тому
Mitsubishi Electric / City Multi VRF Leak Repair - Part 3
Mitsubishi Electric / City Multi VRF Leak Repair - Part 2
Переглядів 2,6 тис.9 місяців тому
Mitsubishi Electric / City Multi VRF Leak Repair - Part 2
Mitsubishi Electric / City Multi VRF Leak Repair - Part 1
Переглядів 1,2 тис.9 місяців тому
Mitsubishi Electric / City Multi VRF Leak Repair - Part 1
Temperzone / Split Ducted System not Cooling
Переглядів 2,3 тис.9 місяців тому
Temperzone / Split Ducted System not Cooling
Multiple Air Conditioners Are Down
Переглядів 1,3 тис.9 місяців тому
Multiple Air Conditioners Are Down
The Walk-in Freezer Has a Few Issues
Переглядів 92410 місяців тому
The Walk-in Freezer Has a Few Issues
Mitsubishi Electric / City Multi VRF 5015 Fault
Переглядів 2,8 тис.10 місяців тому
Mitsubishi Electric / City Multi VRF 5015 Fault
Servicing My Ducted Air Conditioner
Переглядів 9 тис.10 місяців тому
Servicing My Ducted Air Conditioner
Daikin VRV III / Inverter Compressor & PCB Replacement on a VRV System - Part 2
Переглядів 2,4 тис.11 місяців тому
Daikin VRV III / Inverter Compressor & PCB Replacement on a VRV System - Part 2
Daikin VRV III / Inverter Compressor & PCB Replacement on a VRV System - Part 1
Переглядів 4,8 тис.11 місяців тому
Daikin VRV III / Inverter Compressor & PCB Replacement on a VRV System - Part 1
Actron Air / Commissioning a 25kW Package Unit
Переглядів 99711 місяців тому
Actron Air / Commissioning a 25kW Package Unit
A Few Jobs From Multiple Sites Ep 3
Переглядів 1,1 тис.11 місяців тому
A Few Jobs From Multiple Sites Ep 3
Mitsubishi Electric / City Multi VRF 6607 Fault
Переглядів 7 тис.Рік тому
Mitsubishi Electric / City Multi VRF 6607 Fault
LG MultiV 5 / Recommissioning an LG VRF System
Переглядів 6 тис.Рік тому
LG MultiV 5 / Recommissioning an LG VRF System
Mitsubishi Electric / Multi Head System Runs and Then Turns Off
Переглядів 922Рік тому
Mitsubishi Electric / Multi Head System Runs and Then Turns Off
FULL VIDEO
Where’s the full video?
Its just like flares. If done right, press fittings dont leak. Not proper deburring and they will leak.
We have a Vrf heat recovery system with the RLS press fittings 5 years ago the factory welds on the FC are leaking all the press fittings have been great, Its all installation practices,
I love the idea of them. I only see them when they fail being, on the service side of things, so that probably doesn’t help my opinion.
I just can’t bring myself to except B press. I’ve tried but have seen more failures than success story’s . I mean for cleanliness of the system sure it’s great but it’s not that hard to purge during the brazing. And then there is the constant temperature cycling of the pipe work. That’s surely the unknown factor when you hear the comparison between b press water and b press fridge. In regards to the flow restriction I’m thinking not a concern, maybe the chance for noise from the gas flow but time will tell.
I love the idea of them, but I only really see them when they fail being on the service side only. I also enjoy welding so that’s a factor too 😂
Mate if you and the family ever decide to move to Brisbane feel free to reach out. My company pays the highest and will take you on any day of the week.
I’ll never say never 😂 thanks mate.
Mate, I still can't get myself over the line with press fittings (just yet). Enjoyed the video, nice to see your project there from start to finish. #betterhvac
I’m the same. If I was installing them my guy would still go for welding. Love the ideal of them though. Glad yours enjoying the videos mate. Cheers.
Why didnt you just lift it off and take it out side?
my high school was retrofitted with temperzone Air Conditioning and from what I’ve seen it’s been nothing but problems
Hopefully it has more to do with the installers than the units. When commissioned properly they are good systems.
What is a 'Branch Box'? Is that another term for the indoor unit of the aircon?
Only installed on VRFs, they are designed to allow the correct amount of refrigerant flow to each I/D connected on that branch.
In Mitsubishi’s case, the BC is what allows them to have a heat recovery that only uses two pipes. It has a liquid/gas separator, multiple LEV’s and solenoids. It’s pretty cool.
Id say that crimp leaked under temperature and crimping straight onto the branch box that close is a no no need to weld hard drawn tails off the end
I’d forgotten they recommend to weld HD tails onto the units copper before using crimps. Something about the copper being thinner so it deforms more? I’ll need to go look that up again.
@@hvacraustralia 💯 correct! Well I do it always, weld a dickie bit off the end and then crimp. Speaking of crimps I had one the ones I put in 2years ago leak and I ended up cutting it out and welding in some elbows. More to the story I sent it back to actrol and they passed it onto manufacture for Warranty claim to they replied 'yess we're well aware of this it's a common issue with that fitting' umm wtf?? That's all they said to that! Seems to me like it's a fault with the crimp in the 90 elbow in 7/8
I'm not a fan of crimped fittings on AC pipework, brazing, then maybe compression.
so curious about the actual life cycle of press fittings....one side of me is positive because it saves time...other side hoping i will have retired by the time they all start failing🤣
I love the idea of them, but I think I’d still prefer to weld if I was installing at this stage. Being on the service side I only really see them when they fail so that probably doesn’t help my opinion much 😂
Maybe the O-Ring in the Fitting was not the right one for refrigerant. Here in Germany there are M-Press fittings (brand is Conex Banninger, but with HNBR O-rings for all sorts of Refrigerants.
This fitting was rated for R410a but I’m sure the wrong fitting situation does happen more than I’d like to know about 😂
How about doing a video of the evaporator half? In particular, how you access the filters in the ceiling space.
Could use a clean too..
Those intermittent faults are a bastard
Where did you get those extra long leads from mate? Look very handy.
They came with my Fieldpiece meter. They do sell a kit with all the attachments too. Great for testing.
Your video needs lots of work to make it usable and understandable for someone whos never done the job before
Good job mate
Love the thoroughness!
Have you always tested for shorts to earth just in continuity mode? As a sparky we always use a megger at 250 or 500v for this sort of test, perhaps a multimeter like a fluke 1507 or 1577 would be great for the everyday usage like this without having to get a separate meter? Just a thought cheers
@@lewistreloar2312 If something trips a breaker, good chance that a normal multimeter will pick it up. It's more earth leakage stuff where you need a megger over a multimeter. Tripping an overload is more likely to be something a multimeter is good for, as it suggests a sustained but low overcurrent situation. Low ohms setting on a megger would work too. Also always a chance of energising the wrong thing with a megger when poking around with drives and whatnot too, 500V to the input (or even voltage on the output) probably wouldn't do them any favours.
@@Thermoelectric7 good points, makes sense I guess I’m more so used to chasing down earth leakage faults majority of the time, cheers
Interesting they're still running overloads on all those. Looks like they've done a VFD retrofit at some point and left them in. I suppose it doesn't really matter but I try to take them out when drives go in, lets the VFD do the protection so any faults will just show up on the drive rather than killing power to it. Interesting find! Any reason you go for the ABB switchgear? Schneider stuff seems to be smaller from experience and looks a bit nicer too.
It’s not a site I look after, but everything there was fairly old. Seems like a place where they just keep it all going. No reason for ABB, it’s just what Middys have me. In hindsight, I would have gotten Schneider gear for sure. The ABB stuff was high and made it more difficult than it needed to be.
Nice job Did you evacuate the system all night? Is that what i heard?
Thanks mate. I did. I only have a 6CFM pump so for me it’s better to leave it over night to get the best result.
Do you have any issues testing high DCV on that fieldpiece meter? Looking at getting one for myself and wondered. I had an old fieldpiece meter and it's range wasn't high enough when testing DCV between inverter and control PCB's
So far I’ve had no issues testing any components or voltage with the meter. I do really like it overall.
@@hvacraustralia thanks for the feed back mate. Keep up the good work, I enjoy your approach and processes
Thanks for sharing the educational content, very helpful for guys getting into the ductless game
Gun! Now quote them some condenser cleans😉
They were pretty filthy 😂
Will the indoor sensor cause the compressor ramp down? Thanks
Potentially in some circumstances I’d say.
Had one yesterday going into UO (loss of charge) fault not on the controller but In the Bluetooth checker and yeah had the same thing the suction temp was reading 24degrees but my Testo clamp was 4degrees. I always carry spare sensor kit in my ute now
And why didnt you use a drill that was frustrating to watch you use a screw driver lol
It’s a good call. Quick easy fix if you have them on you. Haha I’ve been meaning to get a 12V drill to put in my bag but I keep buying other tools over it. The 18V is bulky and annoying to carry around.
Milwaukee M12 has been a game changer for my kit
I’d have put the sealant higher up.
Awesome video mate, can be difficult aligning the adjustable pulleys as the outside edge in comparison to true centre changes when the pulley diameter is adjusted.
Thanks mate. Yeah definitely can be a pain. Don’t use another method? I’ve thought about getting a laser but I just don’t do it enough to justify it.
Love this video format mate with all the little problems! Would love to get into AC/VRV stuff on the side
Thanks mate, good to hear. Highly recommend getting into VRV/F. It’s about of fun.
What!!!! 😂😂 Someone forgot to do their homework
Beauty!
Typical ceiling mounted noise 🤷
Nice video mate!
Thanks mate.
Do you have in Australia new mitsubishi package unit ?
We don’t. I never seen a Mitsubishi Electric PAC unit. Are they a good unit?
Hello, I have just watched the training video, very well done. You have a command window on your laptop screen at minute 11:00 with which you can “command” indoor units. which version of the software are you using? many thanks in advance, greetings Simon
I have version 1.4.5. But you can use that function on the older versions too. Very handy.
why is the condenser frosting over? it should be the evap.
Heating mode?
Likely the contactor stuck
It’s a reverse cycle. This currently was the evaporator as it’s operating in heat mode.
Confused to how a block strainer will cause a sight glass to run like a river?
I can’t remember specifically what I said. But a blocked strainer won’t typically have a flashing sight glass too. From memory this unit was low, I think I was saying they show similar signs in terms of suction pressure and superheat. Not the flashing sight glass though. Potentially I just misspoke.
😮😮😂😂😂😂😂😂😂… board not working, no defrost?
Unfortunately, I wasn’t there to look at this unit. A tech is there today investigating it though.
What is electric voltage in Australia 240 or 110 ?
230V single phase and 400V 3 phase with 50 hertz.
Fkn tank
Seriously 😂
And they say flood back is bad for compressors I call bullshit
From now on I’m going to set my Superheat to 1K for maximum efficiency 😂
57 micron owsome 👍🏻
Have you tried using a string line across the face of the pulleys to align them? Nice video.
I haven’t tried it before. Does it work better? I just use the level because that’s what was shown.
1:20 don’t those isolators lever up from the centre core for locks? I believe some similar makes like that do. Other than my two cents, good upload!
I don’t know! Next time I’m there I’ll have to check that out. Good to know. Thanks mate.
11:14 I feel your pain mate.
Opening the suction drags the oil out of the conpressor and liquid will boil off before gwtting back to the conpressor that way
Wow just wow! Thats mounted on timber
I see it way too much. I’ve quoted up a few to replace them as they’re rotting. One way or another they’ll get replaced eventually 😂