LEYBOLD SCROLLVAC plus - Alarm Indicator Codes 1-Phase Pump

Fault The pump surface temperature is high
Cause The ambient temperature is too high.
Remedy Cool down ambient temperature
Cause The cooling fan is not running.
Remedy Check the fan connection or contact us
Cause The process gas is too hot or the maximum continuous operating pressure has
been exceeded.
Remedy Check the ambient of pumping medium and maximum inlet pressure
10.1Alarm indicator codes 1-phase pump
Whenever a fail condition becomes active the r
ed alarm indicator shows
a ashing sequence. If the error light is on continuously this indicates a
problem has been found with the embedded software. In this case, try
cycling the power. If cycling the power does not clear the indication, a
software download may be required. In this situation, contact us or the
supplier. If the alarm indicator is ashing, identify the error ash code and
consult
There is a sufcient off period between each subsequent cycle repetition to
clearly mark the start of a new ash sequence. The duration of a long ash
(L) is equal to 3 times the duration of a short ash (0.5 seconds).
Table 20 Alarm indicator codes 1-phase pump
Error
ash
positions
Error
ash
sequence
Comment Actions
0 ssssss
Overload
timeout
Check whether the pump is not running under con
stant high pressure or the inlet or outlet is not
blocked.
1 Lsssss
Controller
software error
Cycle the power to the pump and see whether the
error code appears again. If it does, contact us or the
supplier.
2 sLssss
Controller failed
internal conguration
and
calibration operation
Cycle the power to the pump and see whether the
error code appears again. If it does, contact us or the
supplier.
3 ssLsss
Acceleration
timeout
Check whether the pump is not running under con
stant high pressure or the inlet or outlet is not
blocked.
4 sssLss
Over‑current
trip activated,
or other
hardware fault.
Cycle the power to the pump and see whether the
error code appears again. If it does, contact us or the
supplier.
5 ssssLs
Self test fault Cycle the power to the pump and see whether the
error code appears again. If it does, contact us or the
supplier.
6 sssssL
Serial Control
Mode Interlock
Re‑activate serial enable and send a serial command
to clear the error code.
66 300668736_002_C7 - © Leybold
Fault nding