Huber MPC Minichiller 280, Manual

Page: 46 / 60

Service/maintenance
OPERATION MANUAL Chapter 7
Minichiller®
V2.4.0en/09.08.21//1.30
46
7 Service/maintenance
7.1 Displays in the event of faults
The device displays an alarm or warning message in the event of a fault.
Display Cause Effect, measure
Flashing display of the
temperature value
Warning: Over or under temperature. Control continues.
Setpoint limit values:
Minichiller (Plus) − 5 K/+ 2 K
Minichiller w (Plus) − 5 K/+ 2K
Minichiller H (Plus) ± 5 K
all Unichiller ± 5 K
Exceptions:
Unichiller 003 − 5 K/+ 2 K
Unichiller 012 ± 2 K
F1 - flashing
Error Sensor1
Break or short circuit
Control is inactive.
(Pump off, compressor off, heating off)
Check the sensor.
E1 - flashing
Input E1 reports an error.
a) No enable signal, level alarm
b) Valid for temperature control units
with heater: The internal temperature is
above the set value of the overtempera-
ture protection. The overtemperature
protection was triggered.
a) Control is inactive. (Pump off, compres-
sor off, heating off)
Check level. Restart only possible when
level OK.
b) The value of the overtemperature
protection must be above the internal
temperature and/or the setpoint. Do not
set the setpoint above the temperature set
for the overtemperature protection.
E2 - flashing
Input E1 reports an error.
a) Pump runs and no flow or pump is
running and no water pressure.
b) Valid for temperature control units
with heater: The internal temperature is
above the set value of the overtempera-
ture protection. The overtemperature
protection was triggered.
a) Control is inactive. (Pump off, compres-
sor off, heating off)
Restart only possible by interrupting the
power supply.
b) The value of the overtemperature
protection must be above the internal
temperature and/or the setpoint. Do not
set the setpoint above the temperature set
for the overtemperature protection.
E3 - flashing
Although the control is off, the input E1
signals a flow
Control is inactive.
(Pump off, compressor off, heating off)
The error is corrected automatically when
input E1 is open in standby again.
EP - flashing
Loss of data in the parameter memory Control is inactive.
(Pump off, compressor off, heating off)
During the output of the error message, the error message and the actual value are displayed
alternately.
Overview of
messages