Fault Finding Chart - Grundfos MAGNA 2000 Serie Notice D'installation Et D'entretien

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9. Fault finding chart

WARNING!
Before removing the control box cover, make sure that the electricity supply has been
switched off for at least 5 minutes.
The pumped liquid may be scalding hot and under high pressure. Before any removal or
dismantling of the pump, the system must therefore be drained or the isolating valves on
either side of the pump must be closed.
Indicator light is off.
Indicator light is on.
Indicator light is flashing.
Indicator
lights
Fault
Green Red
The pump is not
running.
The pump is not
running.
The pump has
stopped due to a
fault.
The pump is
running but is
faulty.
The pump has
been set to stop
and is faulty.
22
Cause
One fuse in the installation is
blown/tripped off.
The current-operated or voltage-
operated circuit breaker has tripped
off.
The pump may be defective.
The pump has been stopped in one
of the following ways:
1. With the button
.
2. With the R100.
3. External on/off switch in position
off.
4. Via bus signal.
Electricity supply failure.
Pump blocked and/or impurities in
the pump.
The pump may be defective.
The pump is faulty, but is able to
operate.
The pump is faulty, but is able to
operate (has been set to STOP).
Remedy
Replace/reset the fuse.
Check that the electricity supply falls
within the specified range.
Reset the circuit breaker.
Check that the electricity supply falls
within the specified range.
Replace the pump or call
GRUNDFOS SERVICE for
assistance.
1. Start the pump by pressing
2. Start the pump with the R100 or
by pressing
.
3. Switch on the on/off switch.
4. Start the pump via bus signal.
Check that the electricity supply falls
within the specified range.
Dismantle and clean the pump.
Use the R100 for fault finding, see
section 8.5.3 Fault indications.
Replace the pump or call
GRUNDFOS SERVICE for
assistance.
The pump is able to operate.
Try to reset the fault indication by
briefly switching off the electricity
supply or by pressing the button
or
.
Use the R100 for fault finding, see
section 8.5.3 Fault indications.
In the case of repeated faults,
contact GRUNDFOS SERVICE.
.
,

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Magna 40-120Magna 65-120Magna 65-60

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