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Old 10-01-2009, 09:29 PM   #1
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Problems with SYSTXCCUID01-B and 58MVB080


Hi,

My father in law purchased us a 58MVB080 a while back and I hooked up a cheap $20 thermostat. Last week a friend came by and educated me that I should really have a SYSTXCCUD01-B installed to take advantage of the unit and not run it on high all the time. So I bought one and installed it (so I thought).
I hooked all cables up as advised (Yellow from Thermostat to Y/Y2, Red from Thermostat to R, Green from Thermostat to G and White from Thermostat to W/W1).

I hooked it up, turns the heater back on, went upstairs to admire the new thermostat and the SYSTXCCUID01-B is not staring up. It seems off.
Once every minute (or maybe two) it flashes white but other than that it appears dead. I pressed every button...nothing. I checked the fuse on the furnace and it appears ok. The furnace (I checked in the dark) blinks. One short blink and two long ones...one short, two long ones.
I am completely lost on what to do next. Any help/suggestions would be appreciated.

thanks

claus

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Old 10-01-2009, 10:19 PM   #2
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Problems with SYSTXCCUID01-B and 58MVB080


I am pretty sure the interface wires into the ABCD connections and operates on a network instead of the typical connections. It would not surprise me if you ruined the interface by mis-wiring it.

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Old 10-01-2009, 10:41 PM   #3
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Problems with SYSTXCCUID01-B and 58MVB080


thanks for the ABC tip. Fixed it, works perfectly and all this for just spending $100 for the unit. Thanks again
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