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#31 |
Lex Parsimoniae
Join Date: Feb 2009
Location: Woburn, MA
Posts: 4,918
Thanks: 114
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![]() I'll end this tale with a link to the install repaired unit project.
http://ecorenovator.org/forum/geothe...ct-2011-a.html The repaired system has been working fine for over a month now. I'll post back here again, if the repaired system fails.. Edit: 4/22/2013 It's now 18 months after the repaired until was re-installed in the Den. It's still working fine. http://ecorenovator.org/forum/geothe...html#post29549 Edit: 10/13/2013 Still heating and cooling after 2 years Edit: 3/31/2014 928 days. Or 2 years, 6 months, 16 days. Spring? Nope, it's still winter and we are still running both Sanyos 24-7. No problems seen, during the worse (coldest) winter we've had for many moons. Edit: 6/10/2015 1333 days Or 3 years, 7 months, 25 days Fan motor on the indoor unit is starting to make a little whining noise, like the old one in the living room. The winter of 2014-15 was the coldest with the deepest snow of any winter I can recall. Both systems are still working normally. The silver-soldering is holding! ![]()
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My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. Last edited by Xringer; 06-10-15 at 04:41 PM.. Reason: 43 month report.. |
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#32 |
Lex Parsimoniae
Join Date: Feb 2009
Location: Woburn, MA
Posts: 4,918
Thanks: 114
Thanked 250 Times in 230 Posts
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![]() We got a power surge during a snow storm this winter 2015-2016, that killed the main board.
Not much hope of repairing it, without a schematic - circuit diagram. So the repaired Den AC only lasted about 4.5 years.
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My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. |
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#33 |
Supreme EcoRenovator
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![]() Not bad for a freebie outdoor unit refurbish. Have you finally thrown the towel in on the control board? It's kind of ironic that your repair held up while more of Sanyosonic's work failed. Hopefully the other unit will last ten years like it should...
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#34 |
Lex Parsimoniae
Join Date: Feb 2009
Location: Woburn, MA
Posts: 4,918
Thanks: 114
Thanked 250 Times in 230 Posts
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![]() I've been thinking of devoting another few hours of searching for a replacement board.
(I should have saved the links).. But, I may have to use the tablet, since this display is starting to die.. ![]()
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My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. |
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#35 | |
Lex Parsimoniae
Join Date: Feb 2009
Location: Woburn, MA
Posts: 4,918
Thanks: 114
Thanked 250 Times in 230 Posts
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![]() Quote:
I think this pump-down procedure has a problem. Starting with Step 1 above. When you connect up your manifold gauges, there is air inside the hoses. When the pump-down is in the last stage, (step 4) the compressor creates negative pressure (less than 14psi) inside the hoses and sucks that air into the M/S.. Solutions: 1. After connecting the gauge manifold, hold the manifold up high (R410A is heavier than air), wait a few minutes for the air to rise to the top, and quickly bleed the air off using the manifold's valves. 2. Use an adapter with a cut-off valve on the service port. ![]() Crack the cut-off valve a little bit, to bleed out any air trapped inside it. With the cut-off closed. Attach a vacuum pump to the middle of your gauge set. Pull a good vacuum on the gauge set, and the hose going to the service port. (If you can't get a good vac, your service port adapter cut-off may be leaking a little). After getting a vac, shut off the vac hose to isolate the vac pump, turn the pump off. Now the air is gone, you can open the service port cut-off valve, and see the pressure on the low side gauge shoot up to T/P psi for R410A.. Now, the rest the process can be done, without contaminating your R410A with air from the hose and manifold.. Is the second solution over-kill? It doesn't release global warming gas. Or, is the 1st solution just as good, and doesn't harm the ozone layer..
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My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less.. |
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