P.c. Board Modification For Changing Airflow Volume; How To Change Dip Switch (Sw3) Setting (Factory Setting Is Normal); P.c. Board Modification For Changing Airflow Direction Adjustment - Mitsubishi Electric MLZ-KP25VF Service Manual

9-4. P.C. BOARD MODIFICATION FOR CHANGING AIRFLOW VOLUME

Change dip switch SW3 setting according to the height of ceiling.
Dip switch SW3
Ceiling height
NOTE: When the ceiling is above 2.7 m, airflow volume may be insufficient even with the Dip switch (SW3) set to
"increase airflow".

How to change Dip switch (SW3) setting (Factory setting is normal)

1. Make sure that the breaker for air conditioner is turned OFF.
2. Remove the electrical cover (1) and (2) of the indoor unit.
3. Slide out the electronic control P.C. board, and switch up the slide switch (SW).
4. Put the electronic control P.C. board back to the original position, and install the electrical cover (1) and (2).
NOTE:
Electrical cover (2)

9-5. P.C. BOARD MODIFICATION FOR CHANGING AIRFLOW DIRECTION ADJUSTMENT

The setting when the lower airflow is preferred in the Airflow direction (1)
The angle of airflow direction (1) can be slightly lowered by changing SWV1 to normal
when the lower airflow is preferred or the airflow causes the dirt on the ceiling.
(AUTO) (1) (2)
How to change Dip switch (SWV1) setting (Factory setting is up)
1. Make sure that the breaker for air conditioner is turned OFF.
2. Remove the electrical cover (1) and (2) of the indoor unit.
3. Slide out the electronic control P.C. board, and change the slide switch (SWV1) to normal.
4. Put the electronic control P.C. board back to the original position, and install the electrical cover (1) and (2).
NOTE:
Electrical cover (2)
OBH801
Normal
2.4 m or below
Electronic
control P.C.
board
Electrical cover (1)
(3) (4) (5) (SWING)
Electronic
control P.C.
board
Electrical cover (1)
Increase airflow volume
above 2.4 m and 2.7 m or below
Slide switch SW3
Up
Normal
(Increase airflow
volume)
Slide switch SWV1
Normal Up
(Airflow direction
is lowered.)
15