60
730.138 | 08.1
EN
The solar pump operates, despite the fact that the switch-on condition is not
fulfilled:
Secondary symptoms
Possible cause
Procedure
The pump symbol in
the display rotates
The interval function is acti-
vated
The holiday function is acti-
vated
The frost protection function is
activated
Blockage protection is acti-
vated
•
•
•
•
No fault
Deactivate the relevant function, if
necessary
•
•
Symbol rotates
Display has a red
background
Tool symbol is visible
on the display
•
•
•
The operating switch is set to
manual operation and the pump
output is set to "on"
Set the operating switch to auto-
matic operation
•
Solar pump is operating, activation condition is fulfilled, nevertheless, no heat
transport in the solar circuit (no "fluid circulation"):
Secondary symptoms
Possible cause
Procedure
The pump symbol in
the display rotates
Air is in the solar circuit
The isolating valve is closed
Limescale/contamination on
solar circuit
•
•
•
Check the solar circuit for air
Check the isolating valve
Flush/clean the solar circuit
•
•
•
Solar pump shows cycle behaviour
Secondary symptoms
Possible cause
Procedure
Temperature difference too
small
Collector sensor incorrectly
positioned
•
•
Adjust temperature difference in the
Parameters menu
Check the collector sensor
•
•
10.2 Pt1000 temperature sensor values
A potentially defective sensor can be checked using an ohmmeter To do this, the sensor must be discon-
nected, its resistance measured, and the value compared with the figures in the table below. Small devia-
tions are acceptable.
Temperature [°C]
-30
-0
-10
0
10
0
30
40
50
60
70
Resistance [Ω]
88
9
961
1000 1039 1078 1117 1155 1194 13 171
Temperature [°C]
80
90
100
110
10
130
140
150
160
170
180
Resistance [Ω]
1309 1347 1385 143 1461 1498 1536 1573 1611 1648 1685
Содержание SOLCU
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