44
Differential
Controller
10.3 Operation
System 1 = Solar Differential Regulation
230V~; Switching capacity of relays
2(2)A, 250V~
Mains power:
20 Supply to device and pump A1
19 N-conductor for device
17 N-conductor for collector
pump (A1)
16 Supply connected to
collector pump L1´ (A1)
Sensors:
1+7 Collector sensor (F1)
4+5 Sensor, bottom of storage
tank (F4)
Switching conditions for A1 (P = set
value): Refer to pages 46 & 47.
Heat production - difference to storage
tank and min. temp.:
ON: F1 - F4 > P30 + P31 and
F1 > P40 + 5K
OFF again: F1 - F4 < P30 or F1 < P40
Maximum storage tank temperature:
OFF: F4 > P50
ON again: F4 < P50 - 5K
Maximum collector temperature:
OFF: F1 > P41
ON again: F1 < P41 - 10K
10.4 Sensors
F1 + F4:
• silicone cable 1m length.
• PT1000 sensor with 1kΩ +/- 0.2%
at 0°C.
Temperature Resistance
in °C in Ω
-20 922
-10 961
0 1,000
10 1,039
20 1,078
30 1,118
40 1,155
50 1,194
60 1,232
70 1,270
80 1,309
90 1,347
100 1,385
110 1,422
120 1,460
If an error occurs, the symbol
appears in the display and the associated
error number appears, flashing.
On pressing the three operating keys
simultaneously, the parameters are
reset to their default factory settings.
Sensor fault
No. Designation Significance
E71 Collector The collector
sensor sensor has short
F1 defect circuited or there
is an interruption
E73 Storage tank The storage tank
sensor F4 sensor has short
circuited or defect
there is an
interruption
E81 Eeprom A fault has
occurred in the
Eeprom. Please
check values
Note: Functional defects resulting from incorrect
operation or settings are excluded from the
terms of warranty.
!
Table 7: Sensor Characteristics
Table 8: Sensor Errors
Figure 101: Sensor F1+F4: PT1000
(F4)
(A1)
(F1)
10 Differential Controller
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