Mitsubishi Electric PFFY Series, Technical & Service Manual

Page: 11 / 34

11
AIR OUTLET SELECTION 6
With this function, air comes out simultaneously from the upper and
lower air outlets so that the room can be cooled or heated effectively.
This function is set using the switch SWC on the address board.
1 2 3 4 5 6 7 8 9 10
ON
OFF
SW1
SWC
CN82
CN43
SWC
Fig. 4-1
SWC
How to set to blow out air from the upper and lower air outlets:
Set the SWC to lower side (" "). (Initial setting)
Air blows out automatically from the upper and lower air outlet as
shown in the table below.
How to set to blow out air from the upper air outlet only:
Set the SWC to upper side (" ").
Note:
Be sure to operate with the main power turned off.
Description of operation
Operation
Upper and lower air flow
Room temperature and
set temperature are dif-
ferent.
+
1
Upper air flow
Room temperature is
close to set temperature
or thermo-off.
+
1
Upper air flow only
—
Upper and lower air flow
(Normal condition (in
heating))
Upper air flow
During defrosting op-
eration, start of opera-
tion, thermo-off
Upper and lower air flow
—
COOL
DRY
HEAT FAN
Air flow
Conditions
• Be sure to keep the area around the damper of the lower air outlet free of any objects.
SWC
SW14
SW11
SW12
0 1
2
3
4
5
6
7
8
9
0 1
2
3
4
5
6
7
8
9
0 12
3
4
5
67
89
AB
C
D
EF
(10ths DIGIT) (1s DIGIT)
. /
.
(BRANCH No.)
+
1
Upper and lower air flow
Upper air flow
(Room temp. – Set temp.)
+
2
DIP SW3-2 (on indoor controller board) : OFF (Initial Setting)
If the air conditioner has operated for 2hours with upper and lower air flow,
it changes to 8deg for next 30minutes. After 30minutes it changes back to 4deg.
DIP SW3-2 (on indoor controller board) : ON
Remains to be 4deg.
2deg
4deg
+
2