– 98 –
12. SMMS-u Outdoor Interface P.C. Board Function Setting
Change Table
1. Switch/Function Setting Change
SW No.
Change contents
SW100 DIP SW 2 bit
bit1 Uh communication termination
resistance for central control
OFF: No termination resistance
bit2
Uv communication termination
resistance between indoor and
outdoor units
OFF: No termination resistance
ON: With termination resistance
SW103
DIP SW 4 bit
bit1 Compressor 1 backup
OFF: Normal
ON: Compressor 1 Backup when compressor 1
was in trouble
bit2 Compressor 2 backup
OFF: Normal
ON: Compressor 2 Backup when compressor 2
was in trouble
Bit3 Trouble judgment for over-
capacity of indoor unit connection
OFF: Trouble judgement (Normal)
ON: None (When outdoor unit backup set)
bit4 Trouble judgment for No. of
connected indoor units
OFF: None
ON: Trouble judgement
SW101 DIP SW 4 bit
bit1 Setup of header outdoor unit
OFF: Follower outdoor unit
ON: Header outdoor unit
ON: With termination resistance
SW104 DIP SW 4 bit
bit1
bit2
bit2
bit3 Line address setup
* Used by combining with SW102 (4 bit)
bit4
SW102 DIP SW 4 bit
bit1
Line address setup
* Used by combining with SW101 (3 bit)
SW105 DIP SW 4 bit
bit1 Corresponds to 2-core wire
OFF: Normal (3-core wire <Successive MAKE signal> or 4-core wire
<Pulse signal>)
ON: 2-core wire <Successive MAKE signal : Use only ON input
terminal>
SW106 DIP SW 4 bit
bit1 Change of EEPROM data backup
function
OFF: Normal ON: No data backup
bit2 Communication setup reset
OFF: Normal ON: Reset of communication setup and communication
termination resistance between indoor units
bit2 Demand control
(Expansion change)
OFF: Normal demand (1 type)
ON: Intermediate demand (3 types)
* All bit1 and 2 are ON
㧦
Setup of outdoor unit backup
In case of header outdoor unit
bit2
bit3
bit4
bit3
bit4
bit3
bit4
