No shore power. 33c Sunova

Thanks for all advice. I did check my wall outlet and it does have full power. I used my battery charger and was able overnight to bring the chasis battery to full power and start the Sunova This gave a charge to the coach batteries. Used your advice and started generator. It made that clicking sound and the microwave came on so I now have electrical power. So is the transfer box the problem as to why I don't have shore power. I'll run the generator for a while to get all the batteries back to full charge. What do I check next. Thanks