Good morning.My name is ***** ***** different expert.I understand you feeling like you should pay expert and give a 5 star rating just for replying and begging. Please do not rate answer until we are done.
Your unit has what is called an ECM variable speed. A lot of people do not understand how these motors work.It is very easy when not paying for parts to just tell people replace board or replace the motor,but without troubleshooting, you are guessing at most.
Your motor is High voltage powered but low voltage controlled by the bell on the end of the motor.
The first step in troubleshooting is to see if we are getting both high voltage power to motor and low voltage on demand.
I am attaching a drawing showing where to check for power.
We should have 240v to motor at all times between the Yellow and black at transformer as shown in this drawing.
On call for ac or fan, we should get 24 volts ac between brown (common) and Blue
On call for Heat we should get 24 volts ac between brown (common and white).
You can follow the wires to a terminal where they attach so you do not have to cut the wire.
I will note that the most common thing on these units that fail is the actual control bell on the end of the motor but lets not guess.
If we get both 240 and 24 volts, we will know the bell is the problem.If not we will go from here.