Englander 25 top motor won't run

I Would think it's either bad connections or a bad control board. Can you try bypassing the current wires to the motor?

You'd need 2 wires and run them from the motor to the board. But disconnect the factory wires. I'm assuming the end on the board is soldered so you'd have to hold them safely against the contact points.

Or if they are plugged into the board disconnect the bottom motor wires and plug them into the top motors connection points

It could be one of the built in safety devices on the stove, like the vacuum switch. the top auger stops if these safety devices detect and unsafe condition. I don't know if your year/model has a hopper switch (mine doesn't) but if the lid is open (or switch is bad) then the upper auger stops too.

You can test this all out by bypassing each safety device one at a time. If you find the problem, be sure to correct the condition and not just leave the safety bypassed.

The top auger on these stoves is the metering auger and is suppose to run on for half a turn and stop every fifteen seconds. if all doors are not closed it will not turn.

I would assume you completely cleared the top auger tube from all pellets before installing the new motor. As was stated earlier, the top auger runs intermittently.
Bill