If the fault starts with a 74 then power cycled which gives you the170 fault. The 108 and 44 are a result of the power cycle.
For a fault 74...order a XB46 resistor plug from KONE spares and plug it into yours CCBN.
However if the 108 is first then we need sub fault code to help you. If it is only happening with load at a certain landing...check your rails at that landing.
Also check for a flat spot on your tach wheel.