page 82 of 105
Fault
Possible cause
Remedy
❑
No digital pressure
reading.
➨
Pressure transducer
defective?
✔
Contact local distributor.
❑
Digital pressure
reading is flashing,
one blip*.
➨
Overpressure at the
pressure transducer,
pressure > 795 Torr
(1060 mbar)?
✔
Release pressure imme-
diately (risk of bursting).
❑
Warning triangle
and black valve
symbol are flash
-
ing, two blips*.
➨
External venting valve
removed or defective?
✔
Connect valve or replace
with a new one or recon-
figure without valve.
❑
Warning triangle
and valve symbol
are flashing, three
blips*.
➨
NT VARIO / VARIO-B
pump and in-line valve
connected?
✔
Disconnect in-line valve;
switch controller off/on to
reconfigure.
❑
Warning triangle
and coolant valve
symbol are flash
-
ing, four blips*.
➨
Coolant valve removed
or defective?
✔
Check connection cable
of the valve; or use new
valve or reconfigure with
-
out valve.
❑
Warning triangle
and pump symbol
are flashing, six
blips*.
➨
NT VARIO / VARIO-
B pump and VMS**
(Vacuum Management
System) connected?
✔
Remove VMS. Restart
controller.
➨
Fault at the NT VARIO /
VARIO-B pump?
✔
Check pump, restart con-
troller.
❑
Clock symbol is
flashing.
➨
Preselected process
time is over?
✔
Confirm by pressing key
START/STOP.
❑
Venting valve does
not respond, valve
symbol is dis-
played.
➨
Venting valve contami-
nated?
✔
Clean valve.
❑
”Vac control” func-
tion: Control stops,
”arrow up” is flash
-
ing.
➨
Preset maximum pres-
sure exceeded?
✔
Confirm by pressing key
START/STOP. Change
maximum pressure value
if necessary.
❑
”Pump down” func-
tion: Control stops,
”arrow down” is
flashing.
➨
Pressure below preset
minimum pressure?
✔
Confirm by pressing key
START/STOP. Change
minimum pressure value
if necessary.
❑
Controller does
not respond when
pressing keys (ex-
cept ON/OFF).
PC symbol is dis-
played.
➨
Controller in remote
mode?
✔
Control CVC 3000 via in-
terface or switch off re-
mote mode.
