The Pump Does Not Stop; The Pump Gives Electric Shocks; Twin Booster System Fault Finding - Grundfos SCALA1 Installation And Operating Instructions Manual

15.8 The pump does not stop

Indicator
Grundfos Eye
light
-
-
-

15.9 The pump gives electric shocks

Grundfos Eye Indicator light Automatic reset Cause
- -

15.10 Twin booster system fault finding

In twin configuration, the same fault finding applies.
SCALA1 alarms act in the following way:
• Dry-run alarm: Pump alarm: stops one pump first
and then the other in case of dry-running.
• Max. runtime: System alarm: stops the entire
system.
• Cycling protection: System alarm: stops the
entire system.
Pumps deliver different performances
Grundfos Eye Indicator light Automatic reset Cause
-
Automatic
Cause
reset
The pump cannot deliver the
-
necessary discharge pressure.
The existing pipes are leaking or
-
defective.
The non-return valve is blocked
-
or missing.
Defective earth
-
connection.
Two different models of
-
SCALA1 connected.
Remedy
Replace the pump.
Repair the pipes.
Clean the valve or fit a
non-return valve.
Remedy
Connect the earth connection to the
pump according to local
regulations.
Remedy
Connect the same size
models.
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