Control Functions; Elements On The Control Panel; Display; Light Fields Indicating The Pump Setting - Grundfos ALPHA2 Series Installation And Operating Instructions Manual

7. Control functions

7.1 Elements on the control panel

1
2
3
4
5
6
7
Fig. 18 Control panel
Pos. Description
Display showing the actual power consumption in
1
watt or the actual flow in m
Nine light fields indicating the pump setting.
2 See section
7.3 Light fields indicating the pump
setting.
Light field indicating the status of automatic night
3
setback.
Button for enabling or disabling of automatic night
4
setback and manual summer mode.
5 Button for selection of pump setting.
Button for selection of parameter to be shown in the
6 display, i.e. actual power consumption in watt or
3
actual flow in m /h.
7 Connectivity symbol.

7.2 Display

The display (1) is on when you have switched on the power
supply.
The display shows the actual pump power consumption in watt
(integer) or the actual flow in m
operation.
Faults preventing the pump from operating properly, for example
a blocked rotor, are indicated in the display by fault codes. See
section
9. Fault finding.
If a fault is indicated, correct the fault and reset the pump by
switching the power supply off and on.
If the pump impeller is rotated, for example when filling the pump
with water, sufficient energy can be generated to light up the
display even if the power supply has been switched off.

7.3 Light fields indicating the pump setting

The pump has ten optional performance settings which you can
select with the button (5). See fig. 18.
The pump setting is indicated by nine light fields in the display.
See fig. 19.
Fig. 19 Nine light fields
3
/h.
3 3
/h in steps of 0.1 m /h during
Button
Active light fields
presses
factory setting
0
1
2
3
4
5
6
7
8
9
10
For information about the function of the settings, see section
9. Fault finding.
7.4 Light field indicating the status of automatic night
setback
Light in shows that automatic night setback is active. See fig.
18, pos. 3. See also section
7.5 Button for enabling or disabling
of automatic night setback.
7.5 Button for enabling or disabling of automatic night
setback
The button enables and disables automatic night setback. See
fig. 18, pos. 4.
Automatic night setback is only relevant for heating systems
prepared for this function. See section
The light field is on when automatic night setback is
active. See fig. 18, pos. 3.
Factory setting: automatic night setback is not active.
If you have set the pump to speed I, II or III, you cannot select
automatic night setback.
Description
AUTO
ADAPT
Lowest
proportional-pressure
curve, PP1
Intermediate
proportional-pressure
curve, PP2
Highest
proportional-pressure
curve, PP3
Lowest
constant-pressure curve,
CP1
Intermediate
constant-pressure curve,
CP2
Highest
constant-pressure curve,
CP3
Constant curve/constant
speed III
Constant curve/constant
speed II
Constant curve/constant
speed I
AUTO
ADAPT
9. Fault finding.
13