2802 hrs. on truck 1000 hrs. on heater module ( 1st one replaced on warranty cause someome drove a screw into one of the little modules inside, at factory )
All 3 of our trucks are doing this.
All 3 trucks off warranty because of usage/hours.
Air filter is clean/minty !
Another unit the fan quit working... I don't even know how to test fan ie: PWM controlled DC fan motor and PWM Module ??
They went away from the 3 speed simple units to these variable speed nightmares.
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