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My thermostat/control module just stopped working... the manual thermostat or the remote would not turn either ac or furnace on.* After checking breakers and fuses..all ok.. I checked voltage at the control module and had 120AC volts as well as 13.3 DC voltage.* I also used a spare phone cable I had and plugged*it in where the cable to my thermostat plugs in and found voltage going to my thermostat.* From this I figured the thermostat was shot and found it is also obsolete.* Emailed Domectic and they sent me the part numbers I needed.* It is a phone line cable that communicates between the control module and Thermostat.* If you have some electrical experience you should have no problem installing in a short amount of time.
As far as yours going blank for a short period of time... could you have lost of electricity from your main power briefly?* If not I would check the phone cable at the control module and back of thermostat (unplug, inspect plug back in).* Hope this helps ya.
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