strapex STB 73 - Troubleshooting

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STRAPEX STB 71/73/75ENGLISH
6.8 Troubleshooting
If certain errors occur, the background lighting of the operating panel and the fault display (symbol +
code) illuminate, and an acoustic signal sounds.
If the error is still pending (is not reset automatically), acknowledge by removing / inserting the battery.
Display / state Probable cause Remedy / Corrective action
Operating panel does not
react +
● Button lock is switched on. ► Switch off button lock: see Section
4.6.
Display remains dark. ● Battery faulty / fully discharged.
● Battery not properly inserted.
► Charge/replace battery.
► Check whether battery is complete-
ly inserted and unlocking device
engaged.
E11, red display +
pulsating (long)
Symbol ashes
● Inserted battery not permitted
(wrong battery).
► Insert correct battery.
E20, red display +
pulsating (long)
Symbol ashes &
● Battery too hot (> 60°C/140°F). ► Allow battery to cool.
► Charge battery, replace if neces-
sary.
Symbols & ashing ● Battery temperature too low. ► At a higher battery temperature
it recovers by itself. Work possible.
Max. strap tension is not reached.
E24, red display +
pulsating (long)
Symbol ashes
● Battery not properly inserted.
● Wrong battery.
► Insert battery properly.
► Charge battery, replace if neces-
sary.
E25, red display +
pulsating (long).
Symbols & ashing
● Battery not properly inserted.
● Temperature sensor faulty.
► Insert battery properly.
► Replace if necessary.
E27 (E23), red display
+ pulsating (long)
Symbol ashes
● Battery undervoltage limits
reached.
● Battery empty.
► Charge battery, replace if neces-
sary.
E33, red display +
pulsating (long)
Symbol
● Electronics overtemperature.
● Controller too hot.
► Allow tool to cool.
E37, orange display +
pulsating (medium)
Symbol
● Tool jams during welding pro-
cess, dirty welding mechanism or
foreign body in tool.
► Clean welding mechanism.
E50/51 orange display +
pulsating (medium)
Symbol
● Aborting of welding or cooling
process by lifting the rocker lever.
► Repeat strapping.
E57 orange display +
pulsating (medium)
Tension force display
ashes.
● Strap slipped or broken. ► Reinsert strap.
► Check: Tension force, dirty strap,
right strap and state of tension
wheel / tooth plate.
E55/56 orange display +
pulsating (medium)
Symbols &
● Aborting of tensioning process.
● Performance limitation or time
out.
► Repeat tensioning.
In the case of other error numbers not described here, please contact the the local service center.
If the error cannot be rectied by applying the measures described above, please contact the local
service center!