Rittal SK 3209. Series, Assembly And Operating Instructions Manual

Page: 25 / 37

6 Operation
Rittal air/water heat exchanger assembly instructions 25
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 exchangers
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. 21: Master-slave connection (example)
For further connection examples, see “4.7.1 Bus
connection (only when interconnecting several units
with a Comfort controller)”, page 13.
For details of how to set the identifier, see “6.2.4 Ed-
itable parameters”, page 22 or “6.2.5 Programming
overview”, page 23, parameter “Ad”.
6.2.8 Evaluating system messages
In the 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. 6: Troubleshooting with the 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; repair 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 obstructed Software update needed (only following board
installation with more recent software):
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/or 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. two seconds
Cable defective; connection loose Exchange the boards