Troubleshooting
32
Symptom
LED 1 (left) flashes
Line cord fault
LED 2 flashes
Pump error
LED 3 flashes
Run-up time error
LED 4 flashes
Overload error
LED 5 flashes
Converter temperature error,
temperature in the Turbo.
Drive TD20
classic
is too high.
LED 6 flashes
Pump temperature
error, temperature in the
TURBOVAC is too high.
LED 7 flashes
Internal error
LED 8 flashes
Rotary speed error, speed
of the pump does not corre-
spond to the requirements.
LED 9 is not used.
Two of the LEDs 1 to 5
flash, TURBO.DRIVE has
detected a different pump.
Probable Cause
Motor connection line incorrectly schlossen
connected.
Motor connection line
malfunctioning.
Pump could not be identified or no pump
has been connected.
Frequency converter and pump are not
compatible.
Connecting cable provides only an intermit-
tent contact.
Forevacuum pressure >10
-2
mbar.
Pump blocked.
High vacuum pressure too high.
Forevacuum pressure >10
-2
mbar.
Pump blocked.
High vacuum pressure too high.
Frequent switching between
acceleration and braking.
Ambient temperature too high.
Forevacuum pressure >10
-2
mbar.
Frequent switching between
acceleration and braking.
Poor cooling or cooling line interrupted.
Error during POST.
Error during POST.
Pump or frequency converter were changed.
Remedy
Check the motor connection line and
connect it correctly.
Replace the motor connection line.
Check the system.
Check the system.
Replace the connecting cable.
Check the forevacuum.
Inform the Leybold after-sales service.
Check the vacuum chamber.
Check the forevacuum.
Inform the Leybold after-sales service.
Check the vacuum chamber.
Let the Turbo.Drive TD20
classic
cool down.
Ensure an adequate ventilation.
Operate the pump under normal load only.
Let the pump cool down and operate under
normal load only.
Check the cooling.
Inform the Leybold after-sales service.
Inform the Leybold after-sales service.
Run special acknowledgement, see Chapter
Installation.
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