Test Run (Check Operations); Mounting The Remote Control Interface Unit - Mitsubishi Electric MAC-397IF Manuel D'installation

I SW502 : Air Conditioner Function Settings
(Set this switch based on the functions of the RAC connected to this device.)
SW No. Functions
No. 1 Availability of a heating mode
No. 2 Not in use
No. 3 Not in use
No. 4 Not in use
No. 5 Not in use
No. 6 Not in use
No. 7 Not in use
No. 8 Availability of a fan (Cooling model only)

6. Test Run (Check Operations)

I Interface status monitor
You can check the status of the interface by the LED lamp on the interface unit board.
LED lamp no.
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.

7. Mounting the Remote Control Interface Unit

When mounting the interface to the back-side dent of MFZ-KA model, be sure to apply insulation material to prevent condensa-
tion from forming.
The Remote Control 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.
I When Using Wall Mounting Brackets 2
1
Attach the wall mounting brackets 2 to the interface unit
1 using 2 mounting screws 3.
Interface unit 1
12
OFF
Combined cooler and
heater
–
–
–
–
–
–
Has a fan or mode
OFF
Lamp off
DC 12 V is being supplied from the air
conditioner.
Wall mounting
brackets 2
Mounting screws 3
ON
Cooling unit only
– Permanently set to ON.
– Permanently set to ON.
– Permanently set to ON.
– Permanently set to OFF.
– Permanently set to OFF.
– Permanently set to OFF.
No fan or mode ON
Lamp 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.
2
Mount the unit to a pillar or wall using 2 mounting screws 3.
Mounting
screws 3
Comments
Blinking
–
Cord clamp for
wiring B
Mounting screws C