Comfort Control Fault Display And Error Analysis - Rittal Micro Data Center Level A Montage- Und Bedienungsanleitung

6.2.8 Comfort control fault display and error analysis

Alarm System message
no.
A01 Enclosure door open
A02 Enclosure interior
temperaure too high
A04 Ambient temperature
too high/too low
A05 Icing hazard
H
A06 PSA switch
A07 Evaporator coil
A08 Condensate warning
A09 Condenser fan
A10 Evaporator fan
A11 Compressor
A12 Condenser temperature
sensor
A13 Ambient temperature
sensor
A14 Temperature sensor
Icing
A15 Condensate warning
temperature sensor
A16 Internal temperature
sensor
A17 Phase monitoring
A18 EPROM error
A19 LAN/Master-Slave
A20 Voltage drop
B07 Sensor fault
E0 Display message
The fault displays A03, A06, A07 and B07 are to be reset manually. To do this, hold down the keys
simultaneously for 5 seconds or cut off the voltage to the unit for 1 minute.
Tab. 2: Comfort control fault display and error analysis
We reserve the right to further technical modifications of our products. Version 3.0 / 07.2013
Micro Data Center Level A
Cause
Door open or door limit switch
incorrectly positioned
Cooling capacity too low/unit under-
dimensioned. Error as a consequence
of messages A03 to A17
Ambient temperature outside
of admissible operating range
(+10°C to +60°C)
Operational display in case of icing
hazard
Ambient temperature too high
Condenser soiled
Filter mat soiled
Condenser fan soiled
E-valve defective
PSA switch defective
H
Lack of coolant
Only in units with optional condensate
evaporation
Blocked or defective
Blocked or defective
Compressor overloaded
(inner winding protection)
Defective (check by measuring the
winding resistance)
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Open or short circuit
Incorrect rotary field/phase absent
Master and slave not linked
Error display not shown
Lack of coolant or sensor not attached
Connection problem
(between display and controller board)
Cable defective; connection loose
Remedy
Close door, position door limit switch
correctly, check connection if
necessary
Check cooling capacity
Increase or lower the ambient
temperature (e.g. heat or ventilate
room)
Set the enclosure interior temperature
higher
Unit operating limits exceeded
Clean
Clean or exchange
Replace
Repair by refrigeration engineer
Exchange by refrigeration engineer
Repair by refrigeration engineer
Check condensate discharge; remove
any kinks or blockages in the hose
Clear the blockage;
exchange if necessary
Clear the blockage;
exchange if necessary
Unit switches on again independently
Exchange by refrigeration engineer
Replace
Replace
Replace
Replace
Replace
Exchange two phases
Check setting and/or cable
Event is stored in the log file
Consult service
Reset: Switch power supply OFF/ON
Exchange the boards
and
EN
17