Som 9s, 9troubleshooting – STIEBEL ELTRON SOM 9s User Manual
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SOM 9s
9
Troubleshooting
If a malfunction occurs, a message will appear on the
display of the controller.
The display is permanently off.
Press button
5
. Display illuminated?
no
Check the power supply of the controller. Is it discon-
nected?
The fuse of the controller
could be blown. The fuse
holder (which holds the
spare fuse) becomes ac-
cessible when the cover
is removed. The fuse can
then be replaced.
Directional pad flashes red. The symbol
is indicates
on the display and the symbol
flashes.
Sensor fault An error code instead of
a temperature is shown on the sensor
display channel.
- 88.8
888.8
Cable is broken
Check the cable.
S h o r t c i r c u i t .
Check the cable.
Disconnected PT1000 temperature sen-
sors can be checked with an ohmmeter.
Please check the resistance values corre-
spond with the table.
The controller is protected by a fuse. The fuse holder (which
also holds the spare fuse) becomes accessible when the
cover is removed. To replace the fuse, pull the fuse holder
from the bottom.
Controller has been in
standby, everything o.k.
Check the supply line and
reconnect it.
yes
yes
fuse
WARnIng!
electric shock!
Upon opening the housing, live parts
are exposed.
Î
Always disconnect the control-
ler from power supply before
opening the housing!
°F
Ω
°F
Ω
14
961
131 1213
23
980
140 1232
32
1000
149 1252
41
1019
158 1271
50
1039
167 1290
59
1058
176 1309
68
1078
185 1328
77
1097
194 1347
86
1117
203 1366
95
1136
212 1385
104 1155
221 1404
113 1175
230 1423
122 1194
239 1442
resistance of the
Pt1000 sensors
no