Vacuubrand VNC 2 E User Manual download pdf (Page 34)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully

the validity of this document with respect to his product. Manual-no.: 999199 / 28/11/2012

page 34 of 41

Troubleshooting

Fault Possible cause Remedy

❏

No display.

➨

Mains cable not plugged in or

device not switched on?

✔

Plug in mains cable. Switch

device on. Check fuse in

building.

➨

Fuse defective?

✔

Check fuse in building and

fuse at switch output of VNC

2, replace if necessary.

➨

Other causes (device defec-

tive)?

✔

Contact local distributor.

❏

Display disappears, inter-

nal overload protection

activated.

➨

Thermal overload at control-

ler, ambient temperature too

high?

✔

Ensure adequate ventilation.

➨

Short circuit at connected

valves?

✔

Replace valves.

➨

Thermal overload at control-

ler, overload?

✔

Check current draw of con-

nected devices (pumps,

valves).

➨

Other causes (device defec-

tive)?

✔

Contact local distributor.

❏

Pressure reading incor-

rect.

➨

Device not adjusted correctly?

✔

Readjust controller.

➨

Humidity in pressure trans-

ducer?

✔

Let pressure transducer

dry, e.g. by pumping down.

Readjust if necessary. Detect

and eliminate cause.

➨

Pressure transducer soiled?

✔

See „Cleaning the pressure

transducer“, pg. 36.

❏

Controller does not

respond when pressing

keys.

➨

Controller set to remote

mode, ”P“ is displayed?

✔

Control controller via inter-

face or switch off remote

mode.

❏

Error message

”ErrValve”, two beeps.

➨

External venting valve re-

moved or defective?

✔

Connect or check venting

valve. In case install a new

venting valve or congure

controller without venting

valve. Switch controller off/

on.

❏

Error message

”ErrValve”, three

beeps.

➨

In-line valve removed or

defective?

✔

Connect or check in-line

valve. In case install a new

in-line valve or congure con-

troller without in-line valve.

Switch controller off/on.

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Vacuubrand VNC 2 E User Manual Page 34

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