48
20901544_E12C+16C_NT Vsel_V1.2_260922
Troubleshooting
Error
Error
`
Possible cause
3
Remedy
Personnel
Venting valve
does not oper‑
ate
`
No voltage applied.
`
VACUU·BUS plug‑in
connection or cables
defective or not con‑
nected.
`
Venting valve dirty.
`
Venting valve in sen
‑
sor defective.
3
Check
VACUU·BUS plug‑
in connection and
cables to the con‑
troller.
3
Clean venting
valve.
3
Perform compo‑
nent detection in
VACUU·SELECT
– see: Main menu/
Administration/
VACUU·BUS.
3
If necessary, use
another external
venting valve.
Specialist
Vacuum pump
does not start
`
Overpressure in the
outlet line.
`
Condensation in the
vacuum pump.
3
Open the outlet
line.
3
Ensure clear pas‑
sage.
Operator
`
Pump switched off.
`
Power plug not cor
‑
rectly plugged in or
pulled out.
`
VACUU·BUS plug‑in
connection or cables
defective or not con‑
nected.
3
Switch pump on
using rocker switch.
3
Check power sup
‑
ply and cable.
3
Check
VACUU·BUS plug‑
in connection and
cables to the con‑
troller.
Operator
`
Motor overloaded.
`
Thermal protection
has been triggered.
3
Allow the motor to
cool down.
3
Clear error manu‑
ally:
Unplug pump
from the power
supply
Eliminate cause
of error
Switch pump
back on
Specialist
No or very little
suction power
`
Leak in the suction
line or apparatus.
3
Check suction line
and apparatus for
leaks.
Operator
Error – Cause –
Remedy
