Alexander:
The blower motor issue occurs regardless of whether it is in manual or Auto mode. (I can understand if it happened in Auto Mode only) However, I should let you know that during last week, whenever the blower speed went down, turning the system into 'Auto' would bring the speed up. This did help initially for a couple of days . The fan worked fine on auto mode. However, it started malfunctioning in both modes after that. So now it sucks in either modes
Here is some info on the issue again:
The blower motor goes up and down in speed and then shuts off completely. After a while, it starts up again and stays on. Then it shuts off again. The cycle repeats. I have noticed that this behavior is very prominent during hot days. Not sure if this is a good hint.
Thanks
Rohit