Gary, the fault code 33 is for a high temp reading . IF the cooling system is functioning properly then you will find you have a bad temperature sending unit. This is a common failure and is located in the rear area on top of the engine. The fault code 34 is a high inverter temperture problem. This does happen this time of year with the hot air recirculating back through the generator. It looks like the summer heat is taking it toal on not only yours but many others this summer.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7