© Caleffi 08301_iSolar Plus 24V
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5. Tips for fault localization
If a malfunction occurs, it will be indicated on the display of
the controller:
Operating control lamp
Warning symbol
1
2
S1
S2
S3
3
4
5
6
Temp. Sensor
Pt1000
R1
R2
20
19
18
17
16
15
S4
7
8
14
13
12
VBus
9 10
1 (1) A
1
24 V
(1) A 24 V
R1
R2
T4A
24 V
CALEFFI
NORTH AMERICA, Inc.
Milwaukee,WI 53208
can fuse 4A
Operating control lamp off
Operating control lamp flashes red. On the display the
symbols
and
appear.
°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 values of the
Pt1000-sensors
Check the power supply
o.k.
The can fuse of the controller is defective.
It can be replaced after removal of the
front cover (spare fuse is enclosed in the
accessory bag).
Sensor defect. An error code is shown
on the relevant sensor indication channel
instead of a temperature.
- 88.8
888.8
Line break. Check
the line.
Short-circuit.
Check the line.
Pt1000-temperature sen sors pinched
off can be checked with an ohmmeter.
In the following the resistance values
corresponding to different temperatures
are listed.
