Operating instructions

8 Faults
8.1 Alarms, errors and warnings
Any alarms, error signals and warnings triggered on the device are
shown as plain text on the screen.
Alarms are relevant for safety. The components of the device such
as the pump switch off. A two-tone signal is output by the device.
Alarms can be cancelled with the ENTER button after rectification
of the cause of the fault.
You can find a list of alarms in
Ä Chapter 8.2 ‘Alarm codes’
on page 74.
Warnings are not relevant for safety. The device continues running.
A continuous tone is output for a short time by the device. Warn-
ings are output periodically. Warnings can be cancelled with the
ENTER button after rectification of the cause of the fault.
A list of warnings can be found in
Ä Chapter 8.5 ‘Warnings - con-
trol system’ on page 76 and
Ä Chapter 8.6 ‘Warnings – safety
system’ on page 77.
A two-tone signal is output if any error occurs.
In the case of an error, switch off the device at the mains power
switch. If the error occurs again after restarting the device, note the
error code and the associated description and contact LAUDA
Constant Temperature Equipment service. Contact details can be
found in
Ä Chapter 13.4 ‘LAUDA contact’ on page 94.
Errors are displayed with the appropriate description
and an error code in the form of a sequential number.
8.2 Alarm codes
Code English output Description
02 Low Level Low level detected by float switch
03 Overtemperature Bath / flow temperature higher than Tmax
09 T ext Pt100 External Pt100 actual value is not present
10 T ext analog External analogue actual value is not present
11 T ext seriell External serial actual value is not present
12 Input Analog 1 Analogue module: Current input 1, interruption.
13 Input Analog 2 Analogue module: Current input 2, interruption.
14 T ext serial No signal for actual value via the USB interface
Procedure in the event of alarms
Procedure in the event of warnings
Procedure in the event of errors
Faults
Variocool 74