hi my heater only blows cold and now doesent seem to blow any air out you can here the blower is on , ive got these codes unsure what to tackle first

01274
air flow flap positioning motor
V71
Sporadic

00716
air recirculation flap[ positioning motor
V113
sporadic

00483
control module for auxiliary air heater
sporadic 013-check DTC Memory

any advise what to do first