Fan not running properly

its probably because your fan isn't spinning at highway speeds. check your fan.

Change the fan .

the answer to your problem is most likely the motor start capacitor. A AC motor can run in both directions. The start capacitor is used to cause the current to lag behined the voltage which determines the direction the motor will turn. Its posible the start and run capacitors are in one can. so changing one will change the other. However look for a wiring diagram. Do not asume that both capacitors are wired in properly. They may be fighting one another causeing premature failure.

Outdoor units require there own power supply, check the breaker panel and the fuses in the disconnect switch box next to the unit if there are fused, If the capacitor that was changed last year was not the right rating or configuration it may need to be corrected. One of the most common mistakes is to find a dual run capacitor with on side not functioning and jump in a capacitor for the non functioning side, if this was done it needs to be corrected with the proper capacitor or capacitors.

If the induction motor ain't going I would look for a blown 3 amp (purple) fuse on the control board. If that was good I would check if any of the roll out switches were tripped. If a rollout switch was tripped check or air restrictions somewhere.

Have fan start capacitor checked/replaced by licensed tech, or electrician as they are very dangerous to work with if not experienced and can give a very high voltage shock, that could be fatal. They basically store and increase voltage to higher range for start up of fan and compressor.

Sounds like a bad fan switch in your unit. That unit has a fan board in it that is time delay on and off. Turn the fan to the on position and let it run all the time. If it keeps temp and does not shut off it is the fan realy board. The board also controls the compressor. Check that first and then the tsat. Russ

Remove all power from the furnace, it is likely the brain in the furnace is need of being reset, from the battery replacement, why did you change the battery, was there an indicator telling you to change it?

Many times just removing all the power to the furnace will do the trick with a reset, if not let me know and we will go from there, but it sounds like the main brain is confused or bad, more likely confused, so try the power removed first.

Than let me know wbwill@sbcglobal.net

Turn the power to the indoor unit off. Remove the cover where the fan is. Feel the motor of the fan. If it is very hot the bearings have likely gone out. If the fan is cool to the touch I would call a service company because you likely have an electrical problem that will require some training to solve.

Its normal