Samsung AC018JN4DCH/AA Service Manual page 56

Troubleshooting
Wired remote controller
Contents
Capacities not matched
Communication error between
the indoor unit and wired
remote controller
Communication error between
the Master and Slave wired
remote controllers
COM1/COM2 cross installation
error
Wired remote controller COM2
option setting error
4-16
(cont.)
Check the option code of the indoor unit
Check the connection wire between the indoor unit and
the wired remote controller
Check the option switch for defining the Master and
Slave (only one Master and one Slave can exist)
Check that wired remote controller is connected to the
COM2 terminal of the indoor unit
Check that Com1, Com2 setting DIP switch is set to Com2
Product operation in
error condition
Outdoor unit/
Compressor/Indoor
unit
Outdoor unit
Operation Off protection
control error
Wired remote
Normal operation
controller error
Wired remote
Normal operation
controller error
Wired remote
Normal operation
controller error
Wired remote
Normal operation
controller error
Samsung Electronics