Checking The Module - Grundfos MAGNA 2000-Serie Montage- Und Betriebsanleitung

Indicator
lights
Fault
Green Red
Noise in the
pump.
Note
The R100 can also be used for fault finding.

9.1 Checking the module

Illustration
Flashing
26
Cause
The inlet pressure is too low.
Air in the pump.
Permanently on
Remedy
Increase the inlet pressure and/or
check air volume in the expansion
tank (if installed).
Set the pump to "MAX" by
continuously pressing the button
or with the R100. After venting, set
the pump back to normal duty by
pressing the buttons
the R100.
Note: The pump must not run dry.
Action
1. Remove the module cover.
2. Check the LEDs.
When the pump is switched on and the module
is correctly mounted, the left LED must be
flashing and the right LED must be permanently
on.
3. Refit the module cover.
, or with