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Lennox Y0349 Thermostat Teardown

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Lennox Y0349 Thermostat Teardown, Board and LCD - Closer Look: crwdns2935265:00crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lennox Y0349 Thermostat Teardown, Board and LCD - Closer Look: crwdns2935265:00crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lennox Y0349 Thermostat Teardown, Board and LCD - Closer Look: crwdns2935265:00crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
Board and LCD - Closer Look
  • Now that the board is removed, we see 8 3 volt relays, the temperature and humidity sensor (on it's own board) a small battery, and the microprocessor.

  • The screen has 3 cables (the wide one is for the LCD, the skinny one if for the digitizer, and the simple, red and black one is for the backlighting.

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