Mitsubishi Electric QAHV Série Manuel D'installation & D'instructions page 37

(*1) Water flow rate display method
1Set the PCB DIP switches as shown below.
SW2
-10 -5 -6
OFF OFF OFF
2If the flow rate adjustment operation has never been performed, 'ng' appears on the PCB's digital display after
the system startup operation. Press SWP1 (up) or SWP2 (down) to delete the 'ng' from the PCB's digital display
(changing the display to a value such as 1).
3Press SWP3 repeatedly to change the code shown in the PCB's display. The code changes with each press.
Continue pressing SWP3 until item code 'C25' is displayed in the PCB's digital display.
4Once 'C25' is displayed, press SWP1 or SWP2 to display and check the current flow rate.
After displaying the flow rate, the display shows the current item code (*2) if SWP1 to SWP3 are not operated for
one minute. Display and check the current flow rate by pressing SWP1 or SWP2 again.
(*2) If the flow rate adjustment operation has never been performed, 'ng' appears in the PCB's digital display
after the system startup operation. Press SWP1 or SWP2 to delete the 'ng' from the PCB's digital display
(changing the display to 'C25').
If water shutoff error 2601 occurs during the air bleeding operation, remove the cause of the problem, then change
the setting of PCB slide SWS1 from LOCAL to OFF, and back to LOCAL again. The air bleeding operation starts.
(You can clear water shutoff error by turning the power OFF and ON again. The equipment enters standby mode in
this case.)
(You can also clear water shutoff errors by changing the setting of PCB DIP SW1-9 from OFF to ON once and set
back to OFF. Air-Vent operation is started when DIP SW1-9 is set back to OFF.)
SW3
-7 -8 -9 -10
OFF OFF ON ON
GB-37