Motortech VARIFUEL2, Assembly Instructions Manual

Page: 40 / 50

7 Errors
40 Rev. 09/2020
Problem Possible cause Solution
Traverse range of the
fuel ring corresponds to
the size of one opening
in the fuel ring. How-
ever, the location of the
movement is wrong. Incorrect adjustment of the
fuel ring. See
Adjust Fuel Ring
on page 44
Traverse range of the
fuel ring is too
small/too big. A wrong VariFuel2/2+ is
configured in the stepper
motor driver. Configure your VariStep3 stepper
motor driver via the MICT. Afterwards
if necessary adjust the fuel ring (see
Adjust Fuel Ring on page 44).
Fuel ring scale is not in
the inspection window. Home position lost. See
Adjust Fuel Ring
on page 44
POWER-LED of the
stepper motor driver
does not light up al-
though it is connected
to the supply voltage. Stepper motor driver is
defective. Replace the stepper motor driver.
Stepper motor does not
move without interrup-
tions. There is no malfunction. When the air/fuel ratio is correct, the
motor remains in its position.