EcoRenovator  

Go Back   EcoRenovator > Improvements > Geothermal & Heat Pumps
Advanced Search
 


Blog 60+ Home Energy Saving Tips Recent Posts Search Today's Posts Mark Forums Read


Reply
 
Thread Tools Display Modes
Old 05-17-20, 10:37 PM   #1
nokiasixteth
Journeyman EcoRenovator
 
Join Date: Jan 2014
Location: richton ms
Posts: 323
Thanks: 38
Thanked 13 Times in 12 Posts
Default Circuit board replacement parts (from mini-split)

Does any one know where to order replacement parts for these things . I had a grasshopper get on my outdoor circuit board some howand fry itself . Now it feels like i am going to fry as summer keeps coming down in the south . Any one that knows where to find replacement parts this would be awesome . I have the air con blue wave series 2 ton mini split . The first 1 ton i bought years ago is still chugging along




Attached Thumbnails
Click image for larger version

Name:	20200509_130345.jpg
Views:	408
Size:	579.3 KB
ID:	8981   Click image for larger version

Name:	20200509_130407.jpg
Views:	428
Size:	564.3 KB
ID:	8982  

Last edited by Daox; 05-18-20 at 11:15 AM..
nokiasixteth is offline   Reply With Quote
Old 05-19-20, 11:56 PM   #2
NiHaoMike
Supreme EcoRenovator
 
NiHaoMike's Avatar
 
Join Date: Oct 2008
Location: Austin, TX
Posts: 1,125
Thanks: 15
Thanked 245 Times in 231 Posts
Default

Try cleaning up the burned spot and bridging the burned track. If it then works, conformal coat it to guard against further arc flash events.
__________________
To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...
NiHaoMike is offline   Reply With Quote
Old 05-20-20, 08:18 PM   #3
jeff5may
Supreme EcoRenovator
 
Join Date: Jan 2010
Location: elizabethtown, ky, USA
Posts: 2,354
Thanks: 379
Thanked 593 Times in 496 Posts
Send a message via Yahoo to jeff5may
Default

Here's the web page for your unit:

http://airconint.com/wiki/index.php?title=Blue_Series_3

It looks like the power feed for the outdoor fan motor got burnt. I would definitely check the resistance between the two terminals on the motor connector before I did a board repair. The service manual for your model should have some typical values for reference.

Also, how old is the unit? It may still have warranty coverage. If so, you should be able to send the pics to the manufacturer and get a new circuit board. I'd definitely verify that it's out of warranty before attempting a board level repair.
jeff5may is offline   Reply With Quote
The Following User Says Thank You to jeff5may For This Useful Post:
nokiasixteth (05-23-20)
Old 05-23-20, 12:59 PM   #4
nokiasixteth
Journeyman EcoRenovator
 
Join Date: Jan 2014
Location: richton ms
Posts: 323
Thanks: 38
Thanked 13 Times in 12 Posts
Default

It is about 1 yr or so old . It is possible . I havent even thought about it still being under warranty. That may be a possibility.
nokiasixteth is offline   Reply With Quote
Old 06-11-20, 10:42 PM   #5
WyrTwister
Master EcoRenovator
 
Join Date: Jun 2013
Location: USA
Posts: 543
Thanks: 6
Thanked 44 Times in 38 Posts
Default

We had a brown out during a snow storm , several years ago . Damaged the PC board on our 12,000 BTU Fredrich mini split .

I purchased it locally at a HVAC supply house . They warrantied it for me . :-)

Seems like the board would have cost around $ 350 , if it had not of been under warranty ?

Wyr
God bless

Last edited by WyrTwister; 07-10-20 at 02:33 AM..
WyrTwister is offline   Reply With Quote
Old 06-23-20, 08:50 PM   #6
nokiasixteth
Journeyman EcoRenovator
 
Join Date: Jan 2014
Location: richton ms
Posts: 323
Thanks: 38
Thanked 13 Times in 12 Posts
Default

Its like a year old . But i installed my self. The guys who are on the page are absolutely not a lick of help . Only pc board i have found was around 350. THinking its time to youtube and figure out how to replace parts on that board . Thats lot higher than i want to spend.

Quote:
Originally Posted by jeff5may View Post
Here's the web page for your unit:

http://airconint.com/wiki/index.php?title=Blue_Series_3

It looks like the power feed for the outdoor fan motor got burnt. I would definitely check the resistance between the two terminals on the motor connector before I did a board repair. The service manual for your model should have some typical values for reference.

Also, how old is the unit? It may still have warranty coverage. If so, you should be able to send the pics to the manufacturer and get a new circuit board. I'd definitely verify that it's out of warranty before attempting a board level repair.
nokiasixteth is offline   Reply With Quote
Old 06-23-20, 08:52 PM   #7
nokiasixteth
Journeyman EcoRenovator
 
Join Date: Jan 2014
Location: richton ms
Posts: 323
Thanks: 38
Thanked 13 Times in 12 Posts
Default

You happen to have any recomendations on what type solder to use. I have not got the faintest clue where to start

Quote:
Originally Posted by NiHaoMike View Post
Try cleaning up the burned spot and bridging the burned track. If it then works, conformal coat it to guard against further arc flash events.
nokiasixteth is offline   Reply With Quote
Old 06-24-20, 09:30 AM   #8
jeff5may
Supreme EcoRenovator
 
Join Date: Jan 2010
Location: elizabethtown, ky, USA
Posts: 2,354
Thanks: 379
Thanked 593 Times in 496 Posts
Send a message via Yahoo to jeff5may
Default

If you didn't submit registration paperwork, your warranty is moot. It had to have been given a thumbs up by a licensed HVAC tech and submitted within 90 days. The approving tech is supposed to put a valid EPA license number on the warranty registration in order for the manufacturer to honor anything. The tech support crews only want to deal with licensed techs, not end-user customers. I imagine you didn't spend 5000 dollars on the system, so even if you have to buy a new board, you'll still come out way ahead.

Ok so here's what I would do:

Check the motor out. Find the LRA (locked rotor amps) and RLA (running load amps) for the motor. LRA is usually like 10x the running amps.

Grab a blade fuse holder and electrical solder at your favorite auto parts store or Walmart or wherever. Make sure you get a fuse holder rated for at least the LRA amps. If you don't have any, grab a cheap toothbrush, some 90% alcohol, qtips, and an exacto knife. Solder flux is helpful but optional. If you buy some, get water soluble non acid flux.

Using the toothbrush, qtips, and alcohol, clean up the dirty on your circuit board. Get rid of all the black burnt bug and arc flash residue. Scrape off the burnt circuit trace with the exacto knife and clean up with alcohol.

Measure the motor ohms at the connector to make sure it is solid. Disconnect the motor from the board, measure ohms, and plug back in. Measure ohms on the board to verify. If you have a burnt pin, well you have more rework to do. If your motor doesn't agree with the service manual ohms, time for a new one.

Find a good place for the fuse holder to live once the board is installed. That way if you ever have to change the fuse, it's not a big deal. Make sure the wires can't get pinched during reassembly.

Looking at the picture of the damage, you'll be attaching one wire of the fuse holder to the left hand trace marked +310v. Scrape away a little green near the connector and solder a good blob onto the terminal and trace you just exposed. While you're there, rework the next terminal over that arced also. It's marked GND.

Once the connector terminals look good, solder one wire of the fuse holder to the left hand blob over the trace. This connection will carry 310 volts, so make sure it isn't super close to any other conductive things that can help it arc out.

The other wire of the fuse holder will attach to the board above the triangle with the exclamation point. I would attach it to the siver terminal above where the burnt trace is. Again, make a solder blob, then attach the wire to the blob.

The next step is up to you. If you feel confident in your repair, paint the bottom of the board to insulate it. If not, loosely assemble the unit and test operation.

Use a fuse rated close to the locked rotor amps in the fuse holder. The motor will draw locked rotor amps for a few milliseconds every time it starts, then quickly drop off to running amps. If it runs for two minutes and nothing bad happened, you're probably good to go.

If you weren't confident, disassemble the board from the unit and paint it. I use gloss enamel. Don't use stop rust paint, it has zinc in it, which can conduct electricity on a bad day. 3 light coats about 10 minutes apart. Let it sit and dry for a couple hours and reassemble.

Last edited by jeff5may; 06-24-20 at 11:57 AM.. Reason: Information
jeff5may is offline   Reply With Quote
The Following User Says Thank You to jeff5may For This Useful Post:
nokiasixteth (07-02-20)
Old 06-24-20, 09:49 AM   #9
NiHaoMike
Supreme EcoRenovator
 
NiHaoMike's Avatar
 
Join Date: Oct 2008
Location: Austin, TX
Posts: 1,125
Thanks: 15
Thanked 245 Times in 231 Posts
Default

Quote:
Originally Posted by nokiasixteth View Post
You happen to have any recomendations on what type solder to use. I have not got the faintest clue where to start
Go with good quality (e.g. Kester) 63/37 leaded solder. Lead free is harder to work with so I do not recommend it for a beginner. For the iron, go for the TS100 if you want one that's portable or a T12 if you want a budget option.

Practice a bit on a scrap board, but it looks like a pretty easy soldering job.
__________________
To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...
NiHaoMike is offline   Reply With Quote
The Following User Says Thank You to NiHaoMike For This Useful Post:
nokiasixteth (07-02-20)
Old 07-02-20, 09:47 PM   #10
nokiasixteth
Journeyman EcoRenovator
 
Join Date: Jan 2014
Location: richton ms
Posts: 323
Thanks: 38
Thanked 13 Times in 12 Posts
Default

Thanks @jeff5may . Na i didnt pay 5k for it new . I paid like 1300 for the system and installed it my self . Never figured a grasshopper would do such . I am off tomar so i will attempt the repair following your instructions .

nokiasixteth is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:18 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design