Trauma “ Trauma - fan control

[Rmlandscapes]

Morning from scotland ,
After a recent habitation check ,
Engineer says my trauma heater working fine but the fan control not working so not able to circulate around van !
Any help or links be appreciated

 

[Clivefog]

Can you hear the fan motor?

 

[GeoffnDee]

Which type/model of Truma Heater is it ?