If the limit part of the switch is okay but it's not bringing on the fan, you can set the t-stat to bring the fan on with a call for heat as a temporary measure.
I've read about heat exchanger problems with the early pulses but they apparently were otherwise solid. lennox was ahead of it's time; they had two-speed, high-seer a/c units in the 80s as well which must have been hell to work on.
I've read about heat exchanger problems with the early pulses but they apparently were otherwise solid. lennox was ahead of it's time; they had two-speed, high-seer a/c units in the 80s as well which must have been hell to work on.
