Owner manual

page 66 of 74
Fault Possible cause Remedy
❑
Warning triangle
and black valve
symbol are ash-
ing, two blips*.
➨
External venting valve
removed or defective?
✔
Connect valve or replace
with a new one or recon-
gure without valve.
❑
Warning triangle
and valve symbol
are ashing, three
blips*.
➨
In-line valve and NT
VARIO / VARIO-B
pump connected?
✔
Disconnect VARIO /
VARIO-B pump; switch
controller off/on to recon-
gure.
➨
In-line valve removed
or defective?
✔
Check connection cable
of the valve; or use new
valve or recongure with-
out valve.
❑
Warning triangle
and coolant valve
symbol are ash-
ing, four blips*.
➨
Coolant valve removed
or defective?
✔
Check connection cable
of the valve; or use new
valve or recongure with-
out valve.
❑
No digital pressure
reading, warning
triangle is ashing,
ve or seven blips*.
➨
Five blips:
External pressure
transducer defective or
removed?
✔
Plug in external pres-
sure transducer, or use a
new one, or recongure
without external pressure
transducer.
➨
Seven blips:
Internal pressure trans-
ducer defective?
✔
Contact local distributor.
❑
Warning triangle
and pump symbol
are ashing, six
blips*.
➨
VMS** (Vacuum Man-
agement System) and
NT VARIO / VARIO-B
pump connected?
✔
Remove NT VARIO /
VARIO-B pump. Restart
controller.
➨
Fault at the VMS?
✔
Check VMS, restart con-
troller.
➨
Connecting cable from
VMS removed?
✔
Check cable connections.
❑
Clock symbol is
ashing.
➨
Preselected process
time is over?
✔
Conrm by pressing
START/STOP key.
❑
Internal venting
valve does not re-
spond, valve sym-
bol is not displayed.
➨
External pressure
transducer connected
and active?
✔
Select internal pressure
transducer or connect ex-
ternal venting valve.
❑
Venting valve does
not respond, valve
symbol is dis-
played.
➨
Venting valve contami-
nated?
✔
Clean valve.