posted on 5/10/2007
I have a Lennox HP16-311V, Model Number E16Q3-15-1P, Electric Heat Pump (2 stage heat, 1 stage cool). My original Lennox thermostat broke (14G2701 3AAB82 B38A2) and I replaced it with a Ritetemp 8050c about 6 months ago.
It worked fine on heat, but now that I switched it to cool, nothing. The outdoor unit is also not "kicking in". I think it has to do with the wiring and that is where I am at a loss.
On the old Lennox Thermostat, the wires I had were:
On the new Ritetemp thermostat, the best wiring configuation that I can come up with (with the help of the folks at Ritetemp) on the new thermostat is:
X - C
V - RH
R - O
Y - W2
M - Y
F - G
L - Tapped off
A - Tapped off
Jumpers between Y & W as well as RC & RH on the new unit.
Still no cold air and the outside unit is not running (there is a faint buzzing noise however). I am at a total loss at this point and would appreciate any help. Thanks.