17 troubleshooting – STIEBEL ELTRON SOM 10 User Manual
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en
Directional pad flashes red.
Sensor fault. The error code !Sensor fault is
displayed instead of a temperature on the sensor
display channel.
Short circuit or line break
Disconnected temperature sensors can be
checked with an ohmmeter. Please check the resis-
tance values corresponding with the table.
17 Troubleshooting
If a malfunction occurs, a message will appear on the display of the controller.
fuse
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.
WARNING!
Electric shock!
Upon opening the housing, live parts are exposed.
Î
Always disconnect the controller from power supply
before opening the housing!
The display is permanently off.
Press button
5
. Display illuminated?
no
yes
Check the supply line and recon-
nect it.
The fuse of the controller could
be blown. The fuse holder (which
holds the spare fuse) becomes
accessible when the cover is remo-
ved.The fuse can then be replaced.
Check the power supply of the controller. Is it
disconnected?
no
yes
Controller has been in
standby, everything o.k.
°C °F
Ω
Pt500
Ω
Pt1000
Ω
KTY
°C °F Ω
Pt500
Ω
Pt1000
Ω
KTY
-10 14
481
961
1499
55
131
607
1213
2502
-5
23
490
980
1565
60
140
616
1232
2592
0
32
500
1000
1633
65
149
626
1252
2684
5
41
510
1019
1702
70
158
636
1271
2778
10
50
520
1039
1774
75
167
645
1290
2874
15
59
529
1058
1847
80
176
655
1309
2971
20
68
539
1078
1922
85
185
664
1328
3071
25
77
549
1097
2000
90
194
634
1347
3172
30
86
559
1117
2079
95
203
683
1366
3275
35
95
568
1136
2159
100 212
693
1385
3380
40 104
578
1155
2242
105 221
702
1404
3484
45 113
588
1175
2327
110 230
712
1423
3590
50 122
597
1194
2413
115 239
721
1442
3695