Rittal enclosure cooling unit
33
7 Operation
EN
A14
Icing sensor failure
Red
X
The "Icing" sensor in your cooling unit is reporting
a failure.
Please contact the Rittal Service team.
A16
Internal tempera-
ture sensor failure
Red
X
The "Internal temperature" sensor in your cooling
unit is reporting a failure.
Please contact the Rittal Service team.
A18
Electronic fault
Red
X
The electronics in your cooling unit are reporting
an error.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A20
Voltage
Red
X
You are operating your cooling unit outside of the
admissible voltage ranges.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A21
Condenser con-
taminated
Yellow
–
The condenser in your cooling unit is dirty.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A22
Air routing, exter-
nal circuit
Yellow
X
The maximum pressure in the cooling circuit has
been exceeded.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A23
Air routing, internal
circuit
Yellow
–
The evaporation temperature is too low.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A24
EEV alarm
Red
–
A malfunction has been detected in the electronic
expansion valve.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A25
Internal fan alarm
Red
X
The fan in the internal circuit of your cooling unit is
running too slowly.
Please contact the Rittal Service team.
A26
External fan alarm
Red
X
The fan in the external circuit of your cooling unit
is running too slowly.
Please contact the Rittal Service team.
A27
Inverter cooler
Yellow
–
The temperature in the power electronics is too
high.
In the Scan & Service app you will find sugges-
tions on how to rectify the problem yourself. Alter-
natively, please contact the Rittal Service team.
A28
Sensor failure,
suction gas tem-
perature
Red
X
The "suction gas temperature" sensor in your
cooling unit is reporting a failure.
Please contact the Rittal Service team.
System
code
System message
Optical
fibre
Alarm relay
(factory setting)
Description of the system message
Tab. 7:
List of system messages