Lennox thermostat repl; Fan runs all the time - http://www.hvacmechanic.com/ Forums
Original message
| JLA
 |  "Lennox thermostat repl; Fan runs all the time"
, posted Thu 17 Jun 15:02  
I replaced a manual lennox thermostat 51H4301 for my 2 speed heat pump. The new thermostat has a place for a connection for the fan, but I cannot find the wire controlling the fan from the old thermostat wiring. The connections were labeled O, G, L, C, R, W1, Y1, &Y2. Any ideas?
Johnnie
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Replies:
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| HVAC Doc
| "Re(1):Lennox thermostat repl; Fan runs all th" , posted Thu 17 Jun 16:57
G is normally your fan terminal.
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| | JLA
| "Re(2):Lennox thermostat repl; Fan runs all th" , posted Thu 17 Jun 18:24
Thanks, you confirmed what I figured out. Any idea why the fan runs continually? I can shut off the system manually, or change the setting from Auto Fan to 'ON' and the unit responds, but once the AC kicks on and the auto feature begins, the fan does not turn off.
Johnnie
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