Operating control lamp is permanently off.
If the control lamp is permanently off, check the power supply of the device.
Is it disconnected?
no
The fuse of the device 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.
°C
°F
-10
14
-5
23
0
32
5
41
10
50
15
59
20
68
25
77
30
86
35
95
40
104
45
113
50
122
55
131
60
140
65
149
70
158
75
167
80
176
85
185
90
194
95
203
100
212
105
221
110
230
115
239
yes
Check the supply line and recon-
nect it.
Ω
Ω
Ω
Pt500
Pt1000
KTY
481
961
1499
490
980
1565
500
1000
1633
510
1019
1702
520
1039
1774
529
1058
1847
539
1078
1922
549
1097
2000
559
1117
2079
568
1136
2159
578
1155
2242
588
1175
2327
597
1194
2413
607
1213
2502
616
1232
2592
626
1252
2684
636
1271
2778
645
1290
2874
655
1309
2971
664
1328
3071
634
1347
3172
683
1366
3275
693
1385
3380
702
1404
3484
712
1423
3590
721
1442
3695
7
Accessories
7.1
Sensors
Sensors
The product range includes high-precision platinum temperature sensors, flatscrew
sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clip-
on sensors, also as complete sensors with immersion sleeve.
Overvoltage protection device
In order to avoid overvoltage damage at collector sensors (e.g. caused by local light-
ning storms), we recommend installting the overvoltage protection RESOL SP10.
RESOL SP10
Article no.: 180 110 70
31