Setting the pump speed
The speed of the circulation pump (GP1) is set using the
switch (GP1-SF4) so that the projected flow for the house
is achieved. To change the speed hold the switch in until
the LEDs start to flash. Scroll between the different
speeds by pressing the switch. Press the switch once to
see what speed is selected.
The circulation pump is equipped with
five LEDs. In normal mode the LEDs show
the power consumption. They can also
indicate alarms or be used to adjust/display the pump
speed.
During normal operation, the LED lights 1 green. The
other LEDs light yellow and indicate the pump's power
consumption according to the following table.
Power consump-
tion (% of max
power consump-
tion)
LED indication
0One green LED (flashing)
0 – 25One green + one yellow LED
25 – 50One green + two yellow LEDs
50 – 75One green + three yellow LEDs
75 – 100One green + four yellow LEDs
LED indicationPump
speed
1
2
3
4
Post-adjustment, venting
Air is initially released from the hot water and venting
may be necessary. If gurgling sounds can be heard from
the heat pump or climate system, the entire system will
require additional venting.
PCM 40/42 | GB20
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