Heating smart

Guys I have a smart 451 and the air escapes only from the front glass to sbrinarlo does not come out from the feet and from the receptacles the front thinking it was the baffle to the take off and I connect it on the counter the food and it works by turning the knob on the dashboard and connecting the tester, I realized that for a few seconds, there are the 12v, which serve for the actuation dell actuator after no and drops around 1v if I turn off and power back up the framework back the 12v for a few seconds from what may depend according to you?

You made a diagnosis? If you try on the car the actuator by mounting only the connection to the starter motor works?

you just ccendo the picture and turn the knob the actuator rotates if you look a bit does not turn more or better runs jerky it because there are the 12v and fails to turn the starter motor in the actuator

the motor warms up?
could be hardened in the movement,

But when you say that it goes in spurts, are you trying it in its seat? Or external to the mechanism? Have you checked out the shovel which is moved by the motor if it moves freely? You have to make a series of tests,the fact that at a certain point if you don't get more the 12v can also be caused by the fact that detected the error(whatever it is) and then turns off the power

Try to do adaptation with a diagnosis , surely it is a problem of limit

The tests I did:
1)the Actuator is disconnected from the car and connected on the bench at 12v everything works regularly and runs.
2)attached in the car for the first few seconds spins then stops and goes jerky then stops .
3)removed l actuator removed the ingranaggini internal and connected only the motor in the internal actuator sullavettura for the first few seconds OK and then go to shots
4) moving the paddle with the hands, the fixed air change

Do as I tell you , you have to adjust the limit switches of the motors, I will do that with the texa go on riscal/climate and find the.procedure