22
Rittal air/water heat exchanger assembly instructions
6 Operation
EN
On the
master air/water heat exchanger
(00 = factory setting), set the number of slave units
present in the network:
01: Master with 1 slave air/water heat exchanger
02: Master with 2 slave air/water heat exchangers
03: Master with 3 slave air/water heat exchangers
04: Master with 4 slave air/water heat exchangers
05: Master with 5 slave air/water heat exchangers
06: Master with 6 slave air/water heat exchangers
07: Master with 7 slave air/water heat exchangers
08: Master with 8 slave air/water heat exchangers
09: Master with 9 slave air/water heat exchangers
Fig. 26:
Master-slave connection (example)
For details of how to set the identifier,
see “6.2.5 Editable parameters”, page 18 or
“6.2.7 Programming overview of e-Comfort
controller”, page 20, parameter “Ad”.
6.2.10 Evaluating system messages
In the e-Comfort controller, system messages are
indicated by a number in the display.
On the
slave air/water heat exchanger
(00 = factory setting), set its own address:
11: Slave air/water heat exchanger No. 1
12: Slave air/water heat exchanger No. 2
13: Slave air/water heat exchanger No. 3
14: Slave air/water heat exchanger No. 4
15: Slave air/water heat exchanger No. 5
16: Slave air/water heat exchanger No. 6
17: Slave air/water heat exchanger No. 7
18: Slave air/water heat exchanger No. 8
19: Slave air/water heat exchanger No. 9
Tab. 10: Troubleshooting with the e-Comfort controller
Master
02
Slave
11
Slave
12
Display
screen
System message
Possible cause
Measures to rectify the fault
A01
Enclosure door open
Door open or door limit switch
incorrectly positioned
Close door, position door limit switch
correctly, check connection if necessary
A02
Internal temperature
of enclosure too high
Cooling capacity inadequate/
unit undersized
Check cooling capacity
A08
Condensate warning
Condensate discharge kinked
or blocked
Check condensate drainage;
correct any kinks or blockages in the hose
A10
Fan
Blocked or defective
Clear the blockage; replace if necessary
A16
Internal temperature
sensor
Open or short-circuit
Replace
A18
EPROM error
New board installed incorrectly
Software update needed (only following
board installation with more recent soft-
ware): Enter the programming level with
Code 22; press button 1 and confirm with
“set” until “Acc” appears. Next, disconnect
the unit from the mains and reconnect.
A19
LAN/Master-Slave
Master and slave not connected
Check setting and cable
A20
Voltage drop
Error display not shown
Event is stored in the log file
E0
Display message
Connection problem between the
display and the controller board
Reset: Switch power supply off, then switch
on again after approx. 2 sec.
Cable defective; connection loose
Replace the boards
