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First thanks in advance for any help, apologize for the long post but I want to be as detailed as possible so others can relate or not to my situation.
After some research I decided that he ecobee3 was the right solution for my two storeys home + basement (usual US built, drywall walls, wood, etc.)
I ordered the ecobee3 + 2-pack sensor bundle off Amazon and swiftly installed the ecobee3 and placed the sensors and everything worked for 20 minutes, then the sensors started to disconnect (sensors show N/A).
The ecobbe3 has the latest firmware version 18.104.22.1686.
I came to the forum, ecobee FAQ, and do everything that is suggested: remove the batteries, pried the board contacts, put the battery back upside down, waited 5 minutes, put it back on, removed from the ecobee3, added them again, removed the ecobee3 from the wall & put it back, bought new batteries then sensors worked for another 20/30 minutes and again they got disconnected so I repeat (everything but buying more batteries).
I measured the sensors distances and the farthest is about 25 feet direct distance (upper level so ceiling/floor in the middle, maybe we can account 3 walls), the other 2 are less than 20 feet away 1 wall between them and the sensor.
So I contacted ecobee support, did again all described above, let the sensors sitting 6 feet away from the ecobee3 for 24 hrs and they disconnected and reconnected periodically; ecobee support asked me for the sensor codes and let me know that there is a recall and I need to return the sensors to Amazon (as a reminder one of the sensors came within the ecobee3 box, so I need to return the whole thing, leaving me without thermostat for a few days at CO, US).
I explained the issue returning all sensors to Amazon and while I wait for an answer I went to Best Buy and bought 2-pack sensors that I need anyway but I planned to buy later.
Came home, placed my new sensors, they stayed connected for about 6 hours overnight and they also got disconnected, if I move them closer they re-connect but I can not be playing the move them closer game. Remember they are less than 25-20 feet away.
I even unplugged a cordless and a CFL lamp that were on the adjacent room to the ecobbe3 thermostat.
So I wonder:
1.- Are these new sensors also affected by the recall ecobee's Support mentioned? should now the process be return them to Best Buy or Amazon, get new ones, test and repeat?
2.- Maybe is the ecobee3 what is malfunctioning, how can I tell?
3.- Why ecobee does not have a webpage where it is possible to input the sensor code to check if they are affected by the recall.
Does anyone can provide any advise? ecobee any comments from you?