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Old 22-12-2012, 12:45   #1
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Question Danfoss Schematics?

Hi,
Does anyone know where I can find schematics and maybe even a logic description of the common Danfoss controller?

Background:
I got tired of manually defrosting my Danfoss powered fridge and built a digital thermostat with defrost intervals.
Now I'm thinking that since I've got so much computing power and relay ports available I might as well replace the controller all together.
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Old 22-12-2012, 14:14   #2
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Re: Danfoss Schematics?

Lots of info on the Danfoss site. Are you looking for actual circuit diagrams of the controller board or just schematics for wiring to the controller?
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Old 22-12-2012, 14:22   #3
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Re: Danfoss Schematics?

Thanks Belizesailor!
I'm looking for the schematics of the controller board. Or even better a description of the logic and what goes in and out on what pin.
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Old 22-12-2012, 14:39   #4
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Re: Danfoss Schematics?

I suspect that actual schematics might be hard to come by, but check the site and contact Danfoss from there. Loads of literature on there various products there (Group Global - Danfoss) ... although does require some effort to wade through and find what you want.

Something related you should check out. Some newer Danfoss compressors are now Bluetooth enabled. And, they have a software tool to work with the controller (Tool4Cool). See http://www.ra.danfoss.com/TechnicalI..._pi300b102.pdf.

I have not used this configuration, but it sure looks cool.
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Old 22-12-2012, 15:04   #5
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Re: Danfoss Schematics?

Hi Belizesailor,
I'll try to download it over night (I'm in Mexico so the connection is somewhat slow).

Nice, bluetooth programming sounds cool (pardon the pun)

I don't think they'll give it to me. The conversation would go something like this:
-Hi, I'd like the full specs to your controller.
-OK, what do you need it for.
-Well, I'm going to reverse engineer it and make a much more energy efficient and modern controller with defrost cycles, user customization, energy monitoring that I plan to make available for less than half the price of the original unit.
-I see. Goodbye.
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Old 22-12-2012, 16:56   #6
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Re: Danfoss Schematics?

That huge PDF was just a walkthrough of their software

I'm looking for what's in the little black box sitting next to the little Danfoss compressors.
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Old 22-12-2012, 22:27   #7
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Re: Danfoss Schematics?

This is the closest thing I could find:
http://www.ra.danfoss.com/TechnicalI...cei100i602.pdf

Doesn't contain anything about the controller though
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