TROUBLESHOOTING
ZIPPER MASCHINEN GmbH www.Zipper-Maschinen.at
33
ZI-RWM99
22
TROUBLESHOOTING
22.1
Error Codes
Certain errors occurring during operation are automatically detected by the device system and
shown on the display by means of an error code - see table below:
Error
Code Fault
Possible cause
Remedy
1
No rotation signal
Faulty position sensor,
rotation obstacle
(something prevents the
wheel from turning) or
faulty computer board
Replace position encoder
Remove obstacle
If necessary, contact your
dealer.
2
Speed is less than 60
revolutions per minute
No wheel mounted,
faulty position sensor or
faulty computer board
Mounting tyres
Replace position encoder
If necessary, contact your
retailer
3
Miscalculation
Incorrect self-
calibration, excessive
unbalance or faulty
circuit board
Repeat self-calibration, check
correct wheel centering on the
shaft; contact your retailer if
necessary
4
Wrong direction of
rotation
Incorrect direction of
rotation, faulty position
encoder or faulty
computer board
Replace position sensor, correct
direction of rotation, contact
your retailer if necessary
5
Faulty computer board
Faulty computer board
If necessary, contact your
retailer
7
Card related error
Incorrect self-calibration
or faulty computer
board
Repeat self-calibration; contact
your retailer if necessary
8
Memory error during
self-calibration
Start of a second cycle
without reference
weight, crack in
transformer cable,
faulty computer board
or faulty power supply
board
Attach reference weight, replace
transformer cable, contact your
retailer if necessary
22.2
Inconsistent unbalance measured values
When a wheel that has already been balanced is mounted again for balancing, it sometimes
seems as if the wheel has not yet been balanced.
This is usually not due to an incorrect display of the machine, but to the mounting of the wheel
on the adapter - i.e. in the two brackets the wheel has taken a different position in relation to
the centre line of the balancing machine.
Small errors of up to ten grams (4 oz) are considered normal for wheels fixed by cones; for
wheels locked with screws or bolts, the error is usually greater.
If the wheel is mounted on the adapter with screws, it may be that the screws are not
tightened properly - they should be tightened one by one, or, as is often the case, holes have
been drilled on the wheel with too much tolerance.
If a balanced wheel does not run smoothly after being reinstalled in the vehicle, this may also
be due to an imbalance in the car brake drum or (very often) to holes drilled in the rim and
drum bolts with excessive tolerances. In this case, rebalancing with the wheel mounted on the
vehicle can be useful.
