Thank you all!
It has not been cold enough to need the defrost cycle 60-65 so I kept digging.
I found the service manual online this evening and I was able to enter into one of the service modes that showed realtime read outs of all the thermistors.
The main board temp appears to be driven by the return air and controls the interior fan. This temp rises rapidly when the interior fan kicks in while the panel temp doesn't change.
It appears the heat pump unit is working properly but warm air output is leaking into the return air side causing the circulation fan to short cycle. While the control panel sensor is not getting warm enough to stop the heat cycle due to the cabin temp.
When I get a chance I'll pull the cover and see what can be done to stop the air from intermingling due to the leaks, and see if it helps the fan run longer and cabin warm to the set point.
I'm including the manual pages from both the thermistor viewing mode as well as the troubleshooting page that apply in case others have similar issues down the road.
I agree it is really nice to take the chill out of the rv without using propane.