Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Heating & Air Conditioning (https://www.askmehelpdesk.com/forumdisplay.php?f=150)
-   -   Continuously running fan on "Auto" on thermostat (https://www.askmehelpdesk.com/showthread.php?t=488703)

  • Jul 15, 2010, 07:21 PM
    ashtonjns
    Continuously running fan on "Auto" on thermostat
    The fan on the thermostat continuously runs, even if it's set on "auto". I have to shut off the main switch in order for it to shut off. But once the air kicks on, the fan stays on until I flip the main switch again. Also, the error code on the main board reads Reversed 115 VAC polarity... any ideas?
  • Jul 16, 2010, 04:03 AM
    hvac1000
    Quote:
    Originally Posted by ashtonjns View Post
    The fan on the thermostat continuously runs, even if it's set on "auto". I have to shut off the main switch in order for it to shut off. but once the air kicks on, the fan stays on until i flip the main switch again. also, the error code on the main board reads Reversed 115 VAC polarity... any ideas?
    The reverse polarity usually means that the line and neutral are reversed or it is possible just the transformer feed wires are reversed. Sometime these type of problems can be very difficult to find.

    • All times are GMT -7. The time now is 02:08 AM.