Mitsubishi Electric CITY MULTI PKFY-WL18NKMU-E Technical & Service Manual page 20

9-2. FUNCTION OF DIP SWITCH
Switch Pole Function
Thermistor<Room temperature>
1
position
Filter clogging detection
2
Filter cleaning sign
3
Fresh air intake
4
SW1
Switching remote controller display Thermo ON signal indication
5
Mode
6 Humidifier control
selection
7
Air flow set in case of heat
thermo OFF
8
Auto restart function
9
Power ON/OFF by breaker Effective
10
SW2
Capacity
1~6
code
switch
1 Heat pump/Cool only
Not used
2
Not used
3
SW3
Vane horizontal angle
4
Function
Changing the opening of linear
5
selection
expansion valve during thermo OFF
Heating 4 degree up
6
Target superheat setting 2
7
8 Target subcool
In case of replacing the indoor controller board, make sure to set the
switch to the initial setting, which is shown below.
SW4
1~4
Model
selection
TCH121
Operation by switch
ON
Built-in remote controller Indoor unit
Provide
2,500 hr
Not effective
2
Fan operation at Heating mode
Low 1
Setting air flow 1
Effective
Models SW2
ON
WL18
OFF
1 2 3 4 5 6
ON
WL24
OFF
1 2 3 4 5 6
ON
WL30
OFF
1 2 3 4 5 6
Cooling only
—
—
Second setting 1
Effective
Not effective
—
2 —
ON
OFF
1 2 3 4
20
Effective
timing
OFF
Not provide
100 hr
Not effective
Fan output indication
Under
Thermo ON operation at
suspension
heating mode
Extra low 1
Depends on SW1-7
Not effective
Not effective
Before
power
supply
ON
Heat pump
—
—
First setting
Under
suspension
Not effective
Effective
—
—
Before
power
supply
ON
Remarks
Address board
<Initial setting>
ON
OFF
1 2 3 4 5 6 7 8 9 10
NOTE:
SW1-7 SW1-8 Fan speed
OFF OFF Extra low
ON OFF Low
OFF ON Setting air flow
ON ON Stop
2 It is impossible to intake
the fresh air.
Indoor controller board
Indoor controller board
<Initial setting>
ON
OFF
1 2 3 4 5 6 7 8
1 Second setting is same as
first setting.
2 Please do not use SW3-7,8
as trouble might be caused
by the usage condition.
Indoor controller board