Toshiba Super MMY-MAP0801HT8 - Communication Sending Error between Outdoor Units

160
Check code
[E23] / [15]
(d07 / AI-NET)
Check code name
Communication sending error
between outdoor units
Cause of operation
1. Inter-unit cable connection error between
outdoor units
2. Communication connector connection error
between outdoor units, I/F P.C. board error
3. End terminal resistance setup error between
outdoor units
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Did power failure occur?
Is there no noise source, etc?
Is there no miscabling or
disconnection on communication line
between outdoor units?
Is the end terminal resistance
between outdoor units turned on?
(SW30 Bit 1)
Is connection of CN03 connector
on outdoor I/F P.C. board normal?
Check outdoor I/F P.C. board.
Defect
Replace
Is not main power of
outdoor unit turned off?
Check and eliminate noise, etc
Clear check code.
Turn the end terminal resistance to ON.
Turn on main power of outdoor unit.
Correct cabling of cable connector.
Correct communication line.