Specifications

Fault Displays
I ALARM /
15.4 Sensor breakage or short circuit
This fault can correspond to the internal sensor (RF
internal) or to an external sensor (RF external) con-
nected to the socket on the rear.
I ALARM /
- lmprove shielding of the sensor connector cable.
( see chapter 17.5 )
The sensor must be tested and possibly
exchanged
by qualified service personnel.
4320°C
The message "REF means that the reference resistor
for the measuring value evaluation is out of order.
- lmprove shielding of the sensor connector cable.
( see chapter 17.5 )
return unit for servicing.
15.5 Undefined fault
I ALARM I
This can be caused by fault which only occurs for a
short period of time, i.e. with a fluctuating bath level
when the filling level is very close to minimum.
Before returning the unit, top up with heat transfer liq-
uid. This fault can often be remedied in this
way!
In all other cases this unit must be checked by qualified
service personnel.
15.6 External fault RS232C
L-----A Check the external system.
ALARM
-. RS 2326
The circulator has been switched to fault status via the
interface.