How to correctly hook up fan only mode???

Discussion in 'HVAC Heating & Cooling' started by Bl8457, May 3, 2012.

  1. Bl8457

    Bl8457 New Member

    Messages:
    1
    Location:
    Mansfield Ohio
    I have an ultra 3 80 furnace by Armstrong air conditioning Its from 1992 it was originally wired where the fan will only kick on when the heat kicks on I would like to make it run when I turn the thermo fan switch to (on) so I replaced the two wire cord with a 5 wire
    On the thermostat I have (o/b),(y),(r),(g),an (w) now on the furnace blower board I have G,W,C,Y and R
    I have connected w and r because those are for the furnace to kick on and then I connected G this is supposed to be for the fan to kick on or off . When I turn the thermo fan setting to on a relay buzzes on the board and the blower acts like it doesn't have enough power to turn completely on I'm not sure what else to do or check any ideas?!!!
Similar Threads: correctly hook
Forum Title Date
HVAC Heating & Cooling Whole house humidifier, working correctly??? Dec 30, 2008
HVAC Heating & Cooling hooking hot water heat thermostat to furnace in attic Mar 18, 2013
HVAC Heating & Cooling New Thermostat with 'c wire' hookup Jan 4, 2011
HVAC Heating & Cooling Hooking up two bathroom fans to one vent Apr 7, 2010
HVAC Heating & Cooling HVAC with no AC hooked up - help! Aug 15, 2009

Share This Page