Fault Finding Chart - Grundfos MAGNA Montage- Und Betriebsanleitung

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9. Fault finding chart

Fault Cause
The pump does not The wires are not con-
react to the input nected correctly to the
signal MIN, MAX or terminal block.
10 V.
The plug connection be-
tween the terminal box
and the module is faulty.
The terminal box or the
module is defective.
No internal communica-
tion between the terminal
box and the module.
An R100 remote control
will indicate "Fault in
module communication".
The pump does not The wires are not con-
react to the GENI- nected correctly to the
bus signal. terminal block.
The plug connection be-
tween the terminal box
and the module is faulty.
The terminal box or the
module is defective.
Remedy
Connect the wires cor-
rectly.
Correct the fault.
Replace the module.
Replace the terminal box.
Contact Grundfos.
Connect the wires cor-
rectly.
Correct the fault.
Replace the module.
Replace the terminal box.
Contact Grundfos.
Subject to alterations.
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