Grundfos UPE 2000 Series Montage- Und Betriebsanleitung Seite 22

Fault
None of the pumps are run-
ning.
None of the indicator lights
are on.
The pump is not running.
The green indicator light is
flashing.
Both pumps have stopped
due to a fault.
The red indicator light is on
and the green indicator light
is off.
The pump is running, but
has been stopped due to a
fault.
The red and green indicator
lights are on.
The pump has been set to
stop, but has been stopped
due to a fault.
The red indicator light is on
and the green indicator light
is flashing.
Noise in the system.
The green indicator light is
on.
Noise in the pump.
The green indicator light is
on.
Insufficient heat in some
places in the heating sys-
tem.
See also section 6.7 Indicator lights .
22
Cause
One fuse in the installation is blown.
The current-operated or voltage-operated
circuit breaker has tripped out.
The pump is 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.*
* The fault can be temporarily corrected by selecting max. curve duty on the pump or
with the R100, as external forced-control signals will be ignored.
Electricity supply failure (e.g. undervoltage).
Missing phase (the pump runs for 2 minutes
and then stops).
The pumps are blocked and/or impurities in
the pumps.
Fault in electronics.
The differential pressure and temperature
sensor is defective.
The master and slave pumps have been
stopped due to a fault. One or both pumps
have restarted automatically.
The master pump is or has been stopped
due to a fault.
The slave pump is or has been stopped due
to a fault.
The differential pressure and temperature
sensor is defective.
The master and slave pumps have been
stopped due to a fault.
The master pump is or has been stopped
due to a fault.
The slave pump is or has been stopped due
to a fault.
Air in the system.
The flow is too high.
The pressure is too high.
Air in the pump.
The inlet pressure is too low.
The flow is too low.
Note: The R100 can also be used for fault finding.
Remedy
Replace the fuse.
Cut in the circuit breaker.
Repair or replace the pump.
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.
Check fuse and connections.
Remove the inspection screw and turn
the rotor by means of a screwdriver in-
serted into the slot in the shaft end,
and/or dismantle and clean the pump.
Contact GRUNDFOS.
Check sensor connection. Replace, if
necessary.
Reset fault indication.
Check sensor connection. Replace, if
necessary.
Reset fault indication.
Vent the system.
Reduce the head (setpoint) and possi-
bly change over to constant pressure.
Reduce the head (setpoint) and possi-
bly change over to proportional pres-
sure.
Vent the pump.
Increase the inlet pressure and/or
check air volume in the expansion tank
(if installed).
Increase the head (setpoint) and/or
change over to constant pressure.