You can try that but unlikely to fix it. Mine plays up for a week or two after the power is cut. I avoid disconnecting the power if at all possible. Keep resetting it it should come good eventually. Swapping it over will probably mean the same problems. VE HAVAC is a complicated system and swapping out the factory unit seems to cause issues for a bit until it sorts itself out.
Mine has been playing up for about a week but seems to be fixed now. Mech disconnected the battery cable much to my dislike. I've been through this before when power is disconnected.