Panasonic WH-MHF12G9E8 Service Manual page 62

12.2.2 A-class Pump Specification
Power for drive
DC280-373V
Power for control
DC15±10%
Feedback Speed
(puls signal)
4puls/rotation
Control signal is analog voltage (DC0V-6V) generated by microcomputer PWM port.
Microcomputer can change analog voltage by changing PWM duty.
12.2.3 Water Flow Rate Setting

Set water pump speed to adjust the water flow rate.
Depend on the hyraulic system pressure loss and type, the water flow rate can be adjusted by control panel.
1 Press SERVICE button for 5 seconds.
▲
2 Press button to enter menu S02 and press SET button.
3 Press SELECT button then press
4 Press OFF/ON button to quit setting.
Note:
* Before adjust the water flow rate, make sure that the total water volume in the installation is minimum 50 litres for
heating side.
* Please ensure the minimum flow rate is not less than 13l/min and not more than 50l/min.
+
-
+
-
Control Signal
DC0V-DC6V
▲ ▼
/ button to change SPEED and press SET to confirm.
110
100
90
7
80
6
70
60
5
4
50
40
3
30
2
20
1
10
0
0 1013 20
WATER FLOW RATE (L/min)
62
VDD
6 6
5
GND
4
VCC
3
VSP
2
FG
1
30 40 50 60
Pump