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8-8. SMMS-u Outdoor Interface P.C. Board Function Setting Change Table
1. Switch/Function Setting Change
SW No.
bit1 Uh communication termination
resistance for central control
SW100 DIP SW 2 bit
Uv communication termination
bit2
resistance between indoor and
outdoor units
bit1 Setup of header outdoor unit
bit2
SW101 DIP SW 4 bit
bit3 Line address setup
bit4
bit1
bit2
SW102 DIP SW 4 bit
Line address setup
bit3
bit4
bit1 Compressor 1 backup
DIP SW 4 bit
bit2 Compressor 2 backup
SW103
In case of header outdoor unit
Bit3 Trouble judgment for over-
capacity of indoor unit connection
bit4 Trouble judgment for No. of
connected indoor units
bit1
bit2
SW104 DIP SW 4 bit
bit3
bit4
bit1 Corresponds to 2-core wire
SW105 DIP SW 4 bit
bit2 Demand control
(Expansion change)
bit3
bit4
bit1 Change of EEPROM data backup
function
SW106 DIP SW 4 bit
bit2 Communication setup reset
Change contents
OFF: No termination resistance
OFF: No termination resistance
OFF: Follower outdoor unit
* Used by combining with SW102 (4 bit)
* Used by combining with SW101 (3 bit)
OFF: Normal
ON: Compressor 1 Backup when compressor 1
was in trouble
OFF: Normal
ON: Compressor 2 Backup when compressor 2
was in trouble
* All bit1 and 2 are ON Setup of outdoor unit backup
OFF: Trouble judgement (Normal)
ON: None (When outdoor unit backup set)
OFF: None
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>
OFF: Normal demand (1 type)
OFF: Normal ON: No data backup
OFF: Normal ON: Reset of communication setup and communication
termination resistance between indoor units
- 237 -
ON: With termination resistance
ON: With termination resistance
ON: Header outdoor unit
ON: Trouble judgement
ON: Intermediate demand (3 types)
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Troubleshooting
