Operating instructions

60
730.138 | 08.12
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 -20 -10 0 10 20 30 40 50 60 70
Resistance [Ω] 882 922 961 1000 1039 1078 1117 1155 1194 1232 1271
Temperature [°C] 80 90 100 110 120 130 140 150 160 170 180
Resistance [Ω] 1309 1347 1385 1423 1461 1498 1536 1573 1611 1648 1685