I have a lennox HS16-261V-4p unit and it will not turn on. It won't even make a sound. We replaced the thermostat (honeywel RTH1110B) and it did its 5 minute blinking snowflake but now the snow flake is constant but still no air. When we turn the thermostat to Fan it is still nothing. There is power going to the air conditioner and furnace but nothing.. I keep seeing suggestions to reset the unit but I can't find the reset button. Please help!:confused:

Did you put a jumper from rh to rc? Did you turn off the power to the unit when you changed the stat? Mybe you blew the 3 amp fuse.

Hey!! Same problem with ours... except we've been using our new tstat for a while now, but just today, the dam snowflake just blinks then stays lit with no results... went in the attic and found the switch for the unit, yep, its still in the on position... went and flipped the braker, all good. Everything else in the house works. Pushed the red reset button outside on the RUDD unit... nothing. Good times.:mad:

The 3 amp fune in the system might be bad or the transformer has a bad winding...