Pt1000 Temperature Sensor Values - Dimplex SOLCU Installation And Operating Instructions Manual

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