Hi there luke on a pod that works as it should The beeping is telling you that either the motor is over heating or the battery level is very low and the C5 will shut down very soon .But as with your case it looks like the ULA chip is faulty .And giving out false information .
Regarding the temp of the motor it will get hot as there is no fan to cool it down but that is normal ...
You will need to get another pod that is working (That is if you can )and connect it in to your C5 to see if the same thing happens ..
You may have to contact Marty...to test it for you
Bye Chas