Service intervals
We recommend that the system is checked at a Hilti service center after every 200 operating hours. This will ensure
that the equipment is ready for use when required and help avoid high subsequent costs.
-NOTE
The service indicator lights when servicing is necessary.
7. Troubleshooting
The meaning of error codes and the measures to be taken to remedy faults
The electric wall saw is quipped with a fault diagnosis and error display system that allows the operator to local-
ize faults and, as far as possible, to remedy these without assistance.
Should it prove impossible to remedy the fault yourself, you can assist Hilt Service by describing the fault as pre-
cisely as possible and by stating the error code displayed by the remote control unit.
Displayed on remote control
Fault
Possible cause
Recommended measures to
remedy fault
No display
No display on power supply or Electric supply not connected
– Check the electric supply
remote control unit
or faulty
– Check the plug connections
– Return the remote control and
power supply to Hilti Service
Symbol 11 lights
Er50
Machine has switched itself
Cooling water insufficient or
– Allow to cool with cooling
Er51
off due to overheating
too warm
water flowing / restart
Er52
– Return the saw head to Hilti
Er53
Service
Symbol 11 lights
Er20
Machine cannot be
Temperature sensor in the
– Return the saw head to Hilti
Er21
switched on
saw head is faulty
Service
Symbol 11 lights
Er89
Machine cannot be
Temperature sensor in the
– Return the power supply
Er90
switched on
power supply is faulty
to Hilti Service
Symbol 12 lights
Er54
Warning before cut–out due
Cooling water insufficient or
– Improve the cooling
Er55
to overheating
too warm – power supply is
– Return the power supply
Er56
overheating
to Hilti Service
Symbol 12 blinks
Sr60
Warning before cut–out due
Main motor or advance motor
– Improve the cooling
slowly
Sr61
to overheating
is overheating
– Observe the application guidelines
– Return the saw head to Hilti
Service
Symbol 12 blinks
Sr60
Warning of imminent cut-out
Main motor or advance motor
– Improve the cooling
rapidly
Sr61
due to overheating
is overheating
– Observe the application guidelines
– Return the saw head to Hilti
Service
Symbol 12 blinks
Sr62
Warning before cut–out due to
Cooling water insufficient or
– Improve the cooling
slowly
Sr63
overheating
too warm
– Place the power supply in the
shade
Sr64
Ambient temperature too high
– Return the saw head to Hilti
(Sr64)
Service
7.1
6.3
Maintenance / Troubleshooting
29
Printed: 08.07.2013 | Doc-Nr: PUB / 5069686 / 000 / 01
