Grundfos Magna 32-120 - Control Modes

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C1
The HALL sensor in the stator can be tested by measuring the winding resistance using an ordinary multime-
ter. The test is more than 95% reliable.
All three measurements must be OK.
≥ 1.7 MΩ
Approx. 21 kΩ≥ 1.7 MΩ
ID 1 ID 2 ID 3 GND
135 7 9 11 1315
2 4 6 8 10 12 14
UV W X Y Z
Wire colours from HALL
sensor in stator
Black Red White
Å
HALL sensor in stator
TM02 8950 1104
Fig. 5 Numbering of the pump's terminal block
15
14
1
2
3
-
-
-
+
+
+