Sw502 : Air Conditioner Function Settings; Test Run; Mounting The Remote Control Interface Unit; When Using Wall Mounting Brackets - Mitsubishi PLH-3AAK Technical & Service Manual

SW502 : Air Conditioner Function Settings

SW No. Functions
No. 1 Cooling only type/ Heat pump type
No. 2
Auto mode
No. 3
No. 4 Fan speed
No. 5 Vane
No. 6 Swing
No. 7 Not in use
No. 8 Fan mode
* Fan speed 2 step model : An actual fan speed is 2 step though the display of remote controller becomes 4 step or 3 step.
3. Test Run (Check Operations)
Interface status monitor
You can check the status of the interface by the LED lamp on the interface unit board.
LED lamp no. Lamp off
DC 12 V is not being supplied from the
LED521
air conditioner.
Device is not communicating properly
LED522
with the air conditioner.
Device is not communicating properly
LED523
with the MA remote controller.
* Use the table above to check the device operations.

4. Mounting the Remote Control Interface Unit

The Interface unit should be placed in a location where the connecting cable from the interface can reach an indoor unit.
The device will not function properly if the connecting cable is extended so the connecting cable should not be extended.
Mount the interface unit securely to a pillar or wall using 2 or more screws.

When Using Wall Mounting Brackets

1
Attach the wall mounting brackets to the interface unit
using 2 mounting screws.
Interface unit
OFF
Heat pump type Cooling only type
Not available
(setting No.3 disabled) (setting No.3 enabled)
Available
(unit) (remote controller)
3 speeds (2-speed
4 speeds
model set ON)
Available Not available
Available Not available
–
Not available
Lamp on
DC 12 V is being supplied from the air
conditioner.
–
–
2
Wall mounting
brackets
Mounting screws
Mounting screws
69
ON
Set the mode in accordance with the operation
manual for the indoor unit.
Available Heat pump type : Set to ON.
Cooling only type : Set to OFF.
Available
Set to OFF.
When operating a 2-speed model with the 3-speed
setting (ON), the MA remote controller display will
indicate 3 fan speeds.
The table below shows the displays and the actual
outputs at that time.
Display Meaning
Low speed
Medium speed
High speed
The Vane function of either of indoor unit :
When the function is provided, it is Available (OFF).
When the function is not provided, it is Not available (ON).
The Swing function of either of indoor unit :
When the function is provided, it is Available (OFF).
When the function is not provided, it is Not available (ON).
– Permanently set to OFF.
Available Set to ON.
Blinking at approx. 1 second intervals: Device is
communicating normally with the air conditioner.
Blinking at approx. 8 second intervals: Device is com-
municating normally with the MA remote controller.
Mount the unit to a pillar or wall using 2 mounting screws.
Comments
Indoor unit output
Low speed
High speed
High speed
Blinking
–
Cord clamp for
wiring
Mounting screws