heatre blower

[peachy26]

hi there guys and gals hope you are all well . I have recently fitted a new heater blower to my mk2 Octavia  it is the one with full climate control . when you use the fan at low speed it works fine but when it is flat out it works for  2 min then starts cutting out every 20 sec and coming back on and off ! if you even reduce the speed by one click it stops it and works fine . it was bought from euro car parts last nov so and a wee bit fed up way it as they are no cheep  the garage has checked the conections wiring  and it come up on the fault code as a dead short on the blower ????? any help appreciated  thanks for looking and have a great weekend regards michael

[peachy26]

could this be the resister in the foot well next to your feet vent as I read it gives problems I read about it in another post any help apreciated