The Pump Is Not Running; The Pump Is Not Running, And The Indicator Light For Exceeded Maximum Runtime Is On; The Pump Is Not Running, And The Indicator Light For Leakage In The System Is On - Grundfos SCALA1 System Instructions Manual

6.8 The pump is not running

The pump has been stopped by external input or
calendar function.
Grundfos Eye:
Two opposite yellow
lights are permanently
on.
Cause
The water level has
exceeded its maximum
level and triggered an
overflow alarm.
Related information
5.1 Overflow alarm
6.9 The pump is not running, and the
indicator light for exceeded maximum
runtime is on
Grundfos Eye:
Two opposite red
indicator lights are
flashing simultaneously.
The indicator light for
exceeded maximum
runtime is on.
Cause
The pump has been
running for a long time
and the maximum
runtime has been
exceeded.
22
Remedy
• Check the water level
in the tank, and reset
the pump manually
by switching the button
on the back of the
pump from 1-Alarm D
on to 0-Alarm D off.
• Determine the root
cause of the alarm.
• Switch the button on
the back of the pump
to 1-Alarm D on to
return to normal
operation when the
issue has been
resolved.
Remedy
• Check the installation
for leakage and reset
the alarm.
6.10 The pump is not running, and the
indicator light for leakage in the
system is on
Grundfos Eye:
Two opposite red
indicator lights are
flashing simultaneously.
The leakage indicator
light is on.
Cause
The internal non-return
valve is defective or
blocked in completely or
partially open position.
A small leakage is
detected by the anti-
cycling function. Alarm
is on.
Remedy
• Clean, repair or
replace the non-return
valve.
• Make sure that all taps
are closed, and check
the system for
leakages.