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Old 02-02-11, 01:10 AM   #311
bigtguy
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Yes the LED changes colors - green in cool, orange in heat mode.

Regarding the serial port; thanks so much. The tech is coming back tomorrow I will show him this post, and keep you apprised.

Thank you.


Last edited by bigtguy; 02-02-11 at 01:13 AM..
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Old 02-02-11, 07:43 AM   #312
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That sounds good. That must mean the remote commands are working into the indoor unit.
But, are those commands getting down to the outdoor unit.?.

http://sanyohvac.com/assets/document...SeriesRevB.pdf

Page 42 shows you how to run the diagnostics using the remote.
I would be interested in knowing if you got error code E01 or E08 etc..

Good Luck,
Rich
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Old 02-02-11, 05:30 PM   #313
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Hey Rich;

Thanks for your help; your advice led us into a researching of the wiring of the system by us DIYers, and found that the input power had been miswired. When I heard that the 4-way switch wasn't activating, I suspected a power situation, especially since the codes were not reflecting that the switch was faulty.

It was a somewhat costly mistake, as the AC guy didn't check the voltage but recharged the system unnecessarily, costing a full flushing, vacuuming, and recharging. But as DIY we had undertaken the wiring, so our bad.

Thanks again everyone, for your help.
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Old 02-02-11, 07:30 PM   #314
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Now you really have me curious. How could it work so well in cooling mode, if the input wasn't 220vac?
(Was it running on 120vac)??

Or, was it the wiring between the indoor & outdoor units? (Which has the comm line)..
I think it's the Red wire, 'SI' which I think means Serial Interface.

Anyways, please post (or PM me) about the mis-wiring that caused the no-heat bug..



Sorry, you ran into one of those zombie AC repair guys. Like many "Pros" or "Experts",
they fixed one unit a long time ago and keep trying to use the same repair process on every job they run into.
But, maybe he was under orders from his boss to ream the customer for a refrigerant
change, even if he had no clue about how to repair.?.

I just hope he didn't screw the vac job up and put it the right amount of R410a etc etc.


Anyways, I hope the heat is working now.. Give us a review of the product
if you get some time..

Cheers,
Rich
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Old 02-02-11, 07:47 PM   #315
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Yeah it was running in 120vac mode, and it cooled great - which was why we 'assumed' the electrical was working fine.

I'll ask my buddy tomorrow exactly what he did wrong and how Sanyo helped him fix it. Someting about miswiring the neutral line...

The AC guy did a great job, btw, for what he did. I should have been specific - check the entire system diagnostically before jumping to a costly repair. I'm learning that if a person has an air of competency, it doesn't mean he knows exactly the right thing to do. On my part, I got lazy and did not insist on alternate considerations, which a dedicated DIYer must be in the mindset to do.

Hey, I have saved sooooo much money being DIYers that I have to chalk this up to the occasional sluggishness that costs. You gotta stay sharp, and sites like this are such a blessing.

Anyway I'll give you the wiring mishap details tomorrow.

Blessings,

T
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Old 02-02-11, 09:10 PM   #316
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Default It's not your standard looking hookup..



Pins 5&6 have the 230 across them and the neutral line (the fat green one on the left)
is tied to the case ground.

I'll bet you that the unit would run without that green wire connected..

I wish that I had the real schematics..

I'm pretty sure that other green ground wire from the indoor unit needs to be there, as the ground for the comm signal (pin 3)..
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Old 02-02-11, 11:47 PM   #317
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Edit: Is this unit 120v or 240v......guess I should look up the model #.



I think mis-wiring reversing L1 and the neutral will let the unit run Ok but screws up the logic for the controller .Thus not allowing it to revere cycle. But would have to look deeper into the controller logic.

I hope you posts the reason .

I agree with Xringer, There would be no reason for a recovery and recharge.

I would be double checking sub-cooling and superheat. Did your tech weigh in the exact charge???

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Old 02-03-11, 09:08 AM   #318
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Yeapers, it's a 240v system.


Speaking of extra charges, I just saw a good price for an indoor unit at
KHS2472 - Sanyo KHS2472 - 24,200 BTU Ductless Mini-Split Wall-Mounted Heat Pump & Air Conditioner (Indoor Unit)

If I could repair my leaky outdoor unit, & invest about $500,
then I would have another compete system!
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Old 02-03-11, 03:20 PM   #319
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Quote:
Originally Posted by Xringer View Post

If I could repair my leaky outdoor unit,
I'll Bite;


Where is the leak? Must be a very tough spot!
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Old 02-03-11, 04:14 PM   #320
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Those lube drip marks on the top of the compressor's insulated top cover disc, are a clue.
And, if you look real close at the cable tie, you can see lube there too..

Anyways, under that short section of copper that holds a heat sensor,
might be were the leak is.. That's where the hissing sound came from.

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