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Forum: Geothermal & Heat Pumps 11-02-14, 10:51 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
This deserves a detailed answer. Right now,...

This deserves a detailed answer.

Right now, I'm swamped, but I should be able to give your question the attention it warrants later this evening...

Best,

-AC_Hacker
Forum: Geothermal & Heat Pumps 11-01-14, 04:30 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
I'm stuck on the controller part. My...

I'm stuck on the controller part.

My mini-split unit is a nicely hackable minisplit, as it is prior to "inverter technology" complexities, and it is R-22 (R-290 compatible). As far as I'm...
Forum: Geothermal & Heat Pumps 05-22-13, 11:47 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Sure, It's primarily dictated by your chosen...

Sure,

It's primarily dictated by your chosen refrigerant (R22 is almost identical in behavior to R290), then by compressor size, and then by the application (refrigeration, heat pump), and lastly...
Forum: Geothermal & Heat Pumps 04-27-13, 10:27 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
New Parts Have Arrived...

New parts have arrived for the conversion...


http://ecorenovator.org/forum/attachment.php?attachmentid=3162&stc=1&d=1367118118

The photo above is the TXV, that is sized for about 1-Ton, which...
Forum: Geothermal & Heat Pumps 01-31-13, 04:41 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
OK... well, after all my flailing failed me, I...

OK... well, after all my flailing failed me, I grudgingly resorted, as a very last resort, to rational thinking.

I started at my micron gauge, and tried to pull a vacuum on just the micron gauge....
Forum: Geothermal & Heat Pumps 01-30-13, 08:10 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Not to get this thread too far off point, but I...

Not to get this thread too far off point, but I had been hooked up to the Internet for about a week and was trying to find some way in which it could be useful.

Well, I was drilling a hole in a...
Forum: Geothermal & Heat Pumps 01-30-13, 06:32 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Wow, I didn't realize that the bubble thing had...

Wow, I didn't realize that the bubble thing had become so refined!

-AC
Forum: Geothermal & Heat Pumps 01-30-13, 10:51 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Still searching for the leak...

I tried again today to find the leak...

I made an adapter to get from bicycle tube valve fitting to 1/4" flare so I could blow a lot of air into the heat pump, and hooked it up to the heat pump. ...
Forum: Geothermal & Heat Pumps 01-28-13, 03:26 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Maybe There's A Bullet Hole After All...

Yesterday I attempted a pump down, and never even achieved 1 psi difference from atmospheric pressure.

At first I though that my Little Wonder (wonder how long this little thing will last?) vacuum...
Forum: Geothermal & Heat Pumps 01-25-13, 05:52 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
No Gas

I went down just now and loosened the hex screw valves, and alas. there was no hissing sound.

On the cheerful side, the valves were closed, so moisture & crud wouldn't be able to get in.

I have...
Forum: Geothermal & Heat Pumps 01-25-13, 05:47 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
It has one solenoid on one end, and only two...

It has one solenoid on one end, and only two wires, so I'm sure it's spring loaded.

http://ecorenovator.org/forum/attachment.php?attachmentid=2930&stc=1&d=1359156762

You can see the single coil...
Forum: Geothermal & Heat Pumps 01-25-13, 01:30 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Sounds great. Is it OK to connect directly, or...

Sounds great. Is it OK to connect directly, or should I use some kind of resistor? I can see that this would be the perfect way to deal with the 4-way, since I have no plan at this time to use the...
Forum: Geothermal & Heat Pumps 01-24-13, 04:15 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
I like that... If I use it as a heating only...

I like that...

If I use it as a heating only unit, I'll want to have the heater ON during my heating season. And depending on the non-activated state of the 4-way (probably A/C mode by default), I...
Forum: Geothermal & Heat Pumps 01-24-13, 01:09 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
So, it looks like the functions I want to control...

So, it looks like the functions I want to control are:

Compressor
Heater
Fan
4-Way (AKA: reversing valve)


... and that by cutting the traces that lead from IC1 pins number 27, 26, 25,...
Forum: Geothermal & Heat Pumps 01-24-13, 11:57 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Here's the schematic for the main PCB IC chip. It...

Here's the schematic for the main PCB IC chip. It is a 54 pin microprocessor with the designation TMS370C08, which I looked up. I could find the PDFs for that chip, in 40 pin packages, but not in the...
Forum: Geothermal & Heat Pumps 01-24-13, 12:31 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Some Details...

Some more photos of the circuit board, and what I am able to identify as important components.


http://ecorenovator.org/forum/attachment.php?attachmentid=2911&stc=1&d=1359005246
This first photo...
Forum: Geothermal & Heat Pumps 01-22-13, 04:00 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Mega Thankyou's to Xringer, BradC & jeff5may! ...

Mega Thankyou's to Xringer, BradC & jeff5may!

You've provided some interesting info & approaches. The manual looks awfully close to the unit I have. The differences appear to be very small.
...
Forum: Geothermal & Heat Pumps 01-21-13, 04:22 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Digging Deeper...

I removed the front panel to allow a closer look at the components...


Here's a look at the whole unit from the front, showing the fan and the compressor. I see that the fan shows a little...
Forum: Geothermal & Heat Pumps 01-18-13, 09:19 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
This From Acuario...

This from Acuario in response to questions about controller electronics:



NOTE: Acuario live in Spain where compressor sump heaters are not needed, thus his surprise.

Best,

-AC
Forum: Geothermal & Heat Pumps 01-17-13, 07:08 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
This just in from Acuario...

This just in from Acuario:



Hummmm....

Sobering thought from someone with plenty of electronic skill and test tools, and who has spent lots of time trying to crack the code on an inverter...
Forum: Geothermal & Heat Pumps 01-17-13, 06:16 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
I guess I'll just have to crack a valve a wee bit...

I guess I'll just have to crack a valve a wee bit to see...

-AC
Forum: Geothermal & Heat Pumps 01-17-13, 01:57 AM
Replies: 57
Views: 47,803
Posted By AC_Hacker
That's the idea at this point. I'm sure that...

That's the idea at this point. I'm sure that there will be some data logging and tweaking to find the best cross-over point.



Well, you've seen my house and it's pretty small, and doesn't take...
Forum: Geothermal & Heat Pumps 01-16-13, 06:26 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
Heat Pump Test #1...

So I noticed that the heat pump had six chopped off wires coming out of it...

http://ecorenovator.org/forum/attachments/geothermal-heat-pumps/2859d1358372867-ac-hacks-heat-pump-ge_hp-04.jpg
...
Forum: Geothermal & Heat Pumps 01-16-13, 04:46 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
No, not at all, the GSHP supplies good heat......

No, not at all, the GSHP supplies good heat... not as much as I had hoped (bigger, deeper loop field needed). But luckily, as it is, it is able to supply heat when the really foul weather is upon me...
Forum: Geothermal & Heat Pumps 01-16-13, 03:21 PM
Replies: 57
Views: 47,803
Posted By AC_Hacker
AC Hacks a Heat Pump

Thanks to a tip from stalwart EcoRenovator Geo NR Gee, I got lucky and found this magnificent piece for $35. (Outside unit only, no inside unit.)
...
Showing results 1 to 25 of 25

 
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