Citroen C5 X7 mk3 climate control fan fault

[scd7]

Hello, I recently changed the blower fan in the passenger compartment, error 730 on the climate control (4 blinks at the dot of the driver's temperature), it had blown coal brushes, I replaced the whole unit with new one it all good a week after leaving the car, the fan does not start ( still 4 blinks on the air conditioner) on the way home ~10km, I stop the car, start it and it comes back to life, I put the tester on the air conditioner when I get there nothing, I try to leave after a while with the same problem, I put the tester error 72f on the air conditioner.

C5 X7 1.6HDI 2009

Any advice?

[GiveMeABreak]

That's not a proper fault code, so can't help unfortunately.

[scd7]

I found the problem, it is the blower fan is draw more power than OEM, 320w the OEM have only 240w, the fan regulator remain in protection if the car is shut down with blower fan at max speed, it was a warm day somewhere at 39* when the problem happened and I didn't realize it at first and now i stay with the ventilation at medium until I receive the order for collection brushes for the old engine