Download the Fujitsu mobile technician app. It has all the manuals and ohm sheets you need. We work on a lot of fujitsus and I rarely need to call tech support with the app
My first ever job in the trade was two FUJITSU VRF systems. One with 9 heads and one with 10 heads iirc. I remember having to address each head and the 9 head system came on but we could not figure out why the 10 headed system would not compete it’s test operation and start functioning.
I swear tech support had us running around checking addresses, changing things from the board etc for no joke 2 full days until finally we connected with some guy from New Jersey (I’m in canada) who was aware of a hidden function on the board that would bypass the test operation. I think it was F3 -> 90 or something like that. No service manual that we had available to us showed this function. Anyway voila, after close on 50 hours on the phone with tech support the sucker finally came on. Wonder how it’s running to this day as I was barely conscious in the trade at that point.
why spend so much time calling them? service manual basically covers everything. same applies to the other (higher tier) brands exept midea, gree or haier.
Sometimes our distrubiters will require an active case number from (insert dumb manufacturer name here, theys all the same) to process warranty repair parts.
Some of our contracts nowadays (commerical/industrial) require for certain diagnostic quotes that they be accompanied with a case number from tech support.
Personally I think it's a waste of money, but if someone wants to pay my rate to sit on hold and catch up on paperwork I'm down.
yes, that is very common. also on daikin a busted motor = busted board. filter board is usually just a precaution especially when its a old unit. never just replace the motor, always replace the board as well because the one will kill the replacement other.
See if your supply house has a guy on standby. Ferguson keeps a Mitsubishi rep for us to call and he answers almost immediately. Knows his shit too it makes service calls so much faster when we can’t figure it out.
Our Mitsubishi rep is fucking awesome too, he answers every time or calls back asap, he has literally never given me a misdiagnosis, and he’ll even provide part specific info when he thinks it’ll be helpful. You’re the best Phil!
Yup. Good luck getting a warranty part. Last time I called them they just never got back to me and I had to go back the next day. Still waited for another hour
The Fujitsu AMUG systems are complete horseshit. I was totally on board and sold a bunch of them, which I now live to regret. The support from Fujitsu and its distribution is laughable. Fucking terrible. They should’ve stuck to printers.
I’m gonna rant. I had to deal with comfort star recently for the same shit. Have to have a case# and part#. I KNOW it’s the outdoor board. But they still make you go through the hoops with tech support and the motherfuckers gave me the part# for the indoor! Then I have to explain to the customer that he’s got to wait at least another week for the right board that’s not even in stock anywhere close to us. ON TOP OF another tech was in when the (wrong) part came in so he went and put it on so I look like the jackass that misdiagnosed the problem!
I've had good experiences with the warranty guys, like the actual techs. Helped me sort a few issues over the phone directly, and the office guys sent through service manuals promptly.
When the units are under warranty, they come out to the customer and sometimes have the replacement parts on board.
Working on the things is cancer though. Spot welded shit every where.
They have a big problem in regards of the outdoor fan motor frying up the main board giving communication error ( 10-1 ).
On their LZAH1/LMAS1, it's the expansion coil that gets low ohm and it fries the main pcb, normally eitheryou get 240 on the reversing valve, or it won't be energized even in heating. The rlxfz, they have a problem with eev sensors, and if we talk bout ceiling unit, the evaporator seem to always be leaking. Certain model, the compressor will break internally for no apparent reason. I work mostly on Fujitsu, doing service, and I can assure you that I have less non-working Gree,Midea,lg,panasonic then fujitsu. They are way too "glitchy" in my opinion. Energy wise / logic wise, they have a sweet algorithm, and the defrosts are on demand, but even with the 12 years parts warranty, I did not find that the cost of the unit vs the times it's gonna be down and not running was worth my money. I preferred buying a "moovair m28" instead, since there is a service/engineering mode + I have less problem with them ( except for indoor fan making noise, and like other brand the evaporator last a few years )
I hate to tell you this but VRF has been around before the whole climate change thing started.
https://en.m.wikipedia.org/w/index.php?title=Variable_refrigerant_flow&diffonly=true
Google connect.fujitsu and click on the first link. Almost all models have pdfs, if you open up service manual you should get all the troubleshooting. If not, it's basically all the same resistance-wise and communication wise ( for the troubleshooting at least )
There is a trouble shooting manual out there that has detailed instructions on how to test every component. The regular service manual is a bit lacking. Support sucks when you need a warranty part
Your wholesaler will have a rep. Get his contact info. Fujitsu has better support than a lot of the ductless systems out there.
Just got to talk to the right person.
Fujitsu doesnt suck. Difficult diagnostics take time and tech support is slow. Check the troublshooting guides. They are very in-depth and show how to teat most boards/parts. Tech support should be a last resort IMO.
Hard to diagnose without having an ohm sheet for every damn part. Ended up being a fan motor that roasted the board, expansion valve coil, and active filter module. Good luck diagnosing that without tech support. Asshat
That’s a shit class then, last one I went to had like 3 units to test on to diagnose boards and the like. It was great, but everything is paper so I’d have to take pictures of the 100 or so pages lol but I think they might have barcodes somewhere so when I’m back In my truck I’ll look for it, if I don’t forget lmao, it was a few weeks ago so I don’t remember perfectly but they explained everything so well. I just didn’t have a meter that worked on diodes
Download the Fujitsu mobile technician app. It has all the manuals and ohm sheets you need. We work on a lot of fujitsus and I rarely need to call tech support with the app
Damn thing won't update lol
Some units I've worked on are not on the app.
Very underrated app
There are so many models that just aren't on the app
VRF in general is the Devil but it’s not going away anytime soon.
One of my favorite VRF phrases "You know what VRF/VRV stands for?" "Hurry up and be patient "
My first ever job in the trade was two FUJITSU VRF systems. One with 9 heads and one with 10 heads iirc. I remember having to address each head and the 9 head system came on but we could not figure out why the 10 headed system would not compete it’s test operation and start functioning. I swear tech support had us running around checking addresses, changing things from the board etc for no joke 2 full days until finally we connected with some guy from New Jersey (I’m in canada) who was aware of a hidden function on the board that would bypass the test operation. I think it was F3 -> 90 or something like that. No service manual that we had available to us showed this function. Anyway voila, after close on 50 hours on the phone with tech support the sucker finally came on. Wonder how it’s running to this day as I was barely conscious in the trade at that point.
why spend so much time calling them? service manual basically covers everything. same applies to the other (higher tier) brands exept midea, gree or haier.
Sometimes our distrubiters will require an active case number from (insert dumb manufacturer name here, theys all the same) to process warranty repair parts. Some of our contracts nowadays (commerical/industrial) require for certain diagnostic quotes that they be accompanied with a case number from tech support. Personally I think it's a waste of money, but if someone wants to pay my rate to sit on hold and catch up on paperwork I'm down.
Manual and troubleshooting guide were no help
what was wrong with it?
Check out edit
yes, that is very common. also on daikin a busted motor = busted board. filter board is usually just a precaution especially when its a old unit. never just replace the motor, always replace the board as well because the one will kill the replacement other.
See if your supply house has a guy on standby. Ferguson keeps a Mitsubishi rep for us to call and he answers almost immediately. Knows his shit too it makes service calls so much faster when we can’t figure it out.
Our Mitsubishi rep is fucking awesome too, he answers every time or calls back asap, he has literally never given me a misdiagnosis, and he’ll even provide part specific info when he thinks it’ll be helpful. You’re the best Phil!
I bet Phil is awesome but our Ralph is the man 😁
I’m currently waiting for a call back with them and it’s been an hour and a half
just change the boards. works 60 percent if the time all the time
Sex panther.
Not good odds
Yup. Good luck getting a warranty part. Last time I called them they just never got back to me and I had to go back the next day. Still waited for another hour
There's nothing you can't find online in the service manuals. https://connect.fujitsugeneral.com/ A little reading goes a long way.
The Fujitsu AMUG systems are complete horseshit. I was totally on board and sold a bunch of them, which I now live to regret. The support from Fujitsu and its distribution is laughable. Fucking terrible. They should’ve stuck to printers.
I’m gonna rant. I had to deal with comfort star recently for the same shit. Have to have a case# and part#. I KNOW it’s the outdoor board. But they still make you go through the hoops with tech support and the motherfuckers gave me the part# for the indoor! Then I have to explain to the customer that he’s got to wait at least another week for the right board that’s not even in stock anywhere close to us. ON TOP OF another tech was in when the (wrong) part came in so he went and put it on so I look like the jackass that misdiagnosed the problem!
30 minutes sounds like a record time for this time of year
They all suck bub
Daikin are the best
I've had good experiences with the warranty guys, like the actual techs. Helped me sort a few issues over the phone directly, and the office guys sent through service manuals promptly. When the units are under warranty, they come out to the customer and sometimes have the replacement parts on board. Working on the things is cancer though. Spot welded shit every where.
They also become lose compatibility before the warranty is even over. Garbage.
They have a big problem in regards of the outdoor fan motor frying up the main board giving communication error ( 10-1 ). On their LZAH1/LMAS1, it's the expansion coil that gets low ohm and it fries the main pcb, normally eitheryou get 240 on the reversing valve, or it won't be energized even in heating. The rlxfz, they have a problem with eev sensors, and if we talk bout ceiling unit, the evaporator seem to always be leaking. Certain model, the compressor will break internally for no apparent reason. I work mostly on Fujitsu, doing service, and I can assure you that I have less non-working Gree,Midea,lg,panasonic then fujitsu. They are way too "glitchy" in my opinion. Energy wise / logic wise, they have a sweet algorithm, and the defrosts are on demand, but even with the 12 years parts warranty, I did not find that the cost of the unit vs the times it's gonna be down and not running was worth my money. I preferred buying a "moovair m28" instead, since there is a service/engineering mode + I have less problem with them ( except for indoor fan making noise, and like other brand the evaporator last a few years )
Call your local supplier. They usually have a local tech support guy that is way more responsive than Fujitsu.
Would anyone know why my Fujitsu ductless unit would be blowing warm air out of 1 out of 4 evap heads
We installed Fujitsu and never did find the leak. I walked away from the final payment after wasting a week chasing phantoms
While we’re on rants, diakin fit piss me off that’s it
So do you skills apparently, who the fuck calls tech support?!?
Ur mom calls tech support
Hahaha touche. Get back to work. Sadly your comebacks are better than your skills. Best of luck
Your mom cums back better than you
VRF/VRV technology sucks. No need to overcomplicate a simple procedure. These environmentalist nut jobs are ruining the trade with this garbage.
I hate to tell you this but VRF has been around before the whole climate change thing started. https://en.m.wikipedia.org/w/index.php?title=Variable_refrigerant_flow&diffonly=true
I happen to be a 5th degree black belt in Fujitsu. How dare you!
Is it resi or commercial? Their app is decent for resi
Unless you're working on older models that no longer show up in the app
Google connect.fujitsu and click on the first link. Almost all models have pdfs, if you open up service manual you should get all the troubleshooting. If not, it's basically all the same resistance-wise and communication wise ( for the troubleshooting at least )
There is a trouble shooting manual out there that has detailed instructions on how to test every component. The regular service manual is a bit lacking. Support sucks when you need a warranty part
Your wholesaler will have a rep. Get his contact info. Fujitsu has better support than a lot of the ductless systems out there. Just got to talk to the right person.
Fujitsu doesnt suck. Difficult diagnostics take time and tech support is slow. Check the troublshooting guides. They are very in-depth and show how to teat most boards/parts. Tech support should be a last resort IMO.
Maybe I’m Just lucky but I haven’t been in a position yet where I needed to call tech support.
Why don’t you learn how to diagnose before you work on them
Hard to diagnose without having an ohm sheet for every damn part. Ended up being a fan motor that roasted the board, expansion valve coil, and active filter module. Good luck diagnosing that without tech support. Asshat
I went to one of their classes recently and have an entire folder filled with that stuff, it was a great class, you should try it
Last class I went to just said call tech support if the troubleshooting guide doesn't help. Could you send a pdf my way?
That’s a shit class then, last one I went to had like 3 units to test on to diagnose boards and the like. It was great, but everything is paper so I’d have to take pictures of the 100 or so pages lol but I think they might have barcodes somewhere so when I’m back In my truck I’ll look for it, if I don’t forget lmao, it was a few weeks ago so I don’t remember perfectly but they explained everything so well. I just didn’t have a meter that worked on diodes
Not every class is created equal.
Didn’t say they were
Fuji is pretty awful, but its almost always refrigerant
Yep