MASTER PASSWORD
All passwords can be edited through parameteri-
sation. If you don't remember a password, you can
still parameterise the controller and look up and/or
edit the password via a master password. To do
that, follow these steps:
1. Switch off power supply (disconnect from mains
or switch off power supply unit)
2. Press buttons
UP, DOWN
and
SET
at the same
time
and switch on power supply again.
3. Now, a ("Challenge") number will be displayed
for approx. 5s.
In no case disconnect the controller from power
supply now. Otherwise, the number will become
invalid. Using this number, you can call our sales
staff, phone +49 711 68661-0 to request the
master password ("Response"). Enter this master
password in the 1st control level in
.
Important:
Even if you remember the password,
you
must
enter the master password here. If the
password is accepted, you will enter the parameter
selection levels and all passwords will be deacti-
vated. By pressing the
SET
button (display
)
you can switch to the relevant parameter level.
Now, the master password is no longer required.
The passwords will remain deactivated until the
controller is disconnected from power supply
again. In case you leave the parameter level now,
simply press the
SET
button in
in order to
access the parameter selection levels again.
STATUS DISPLAY AND ERROR MESSAGES
Message
Cause
Remedy
High temperature and/or
overpressure above alarm limit
Low temperature and/or low-pressure
below alarm limit
Error on sensor F1,
short-circuit
Check sensor F1
Error on sensor F1,
wire broken
Check sensor F1
Internal error in control unit
Repair control unit
Error in parameter memory
Check all parameters
Error of internal clock
Set clock again. If error occurs again, the
controller must be repaired
Errors
and
will disable the controller. The controller will only be enabled again once the error has
been repaired. Error
can only be eliminated by repair. The errors and the current temperature will be
displayed alternately.
Summary of Contents for ST710-PWHVR.126
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