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-   -   Heating A/C Thermostat screen is blank (https://www.askmehelpdesk.com/showthread.php?t=269645)

  • Oct 15, 2008, 09:14 AM
    draymer
    Heating A/C Thermostat screen is blank
    What are the most common causes of a thermostat screen being blank? House is only 3 years old and I believe the thermostat is a digital unit.
  • Oct 15, 2008, 09:37 AM
    hvac1000
    Blown transforner
    Blown fuse
    Bad batterys
    Power turned off to furnace
    Defective thermostat

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