Samsung AM080FXWANR Service Manual page 84

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-1 Outdoor Unit Test Operation Flow (cont.)
Initial Tracking (Communication Check-up)- Display
1. For the display module of the outdoor unit, there are differences in the contents displayed depending on whether the relevant outdoor unit
is a master unit or a sub unit.
1) Master Unit
The outdoor unit Micom attempts communication with the indoor unit connected to the communication cable (F1/F2) when the power is
turned on.
Basic segment display
Step
At initial power input Checking segment
While setting
communication
between indoor and
outdoor unit
(Addressing)
After communication
Transmit/Reception
setting
(usual occasion)
I/U : Indoor unit
If the number of indoor units set by the outdoor unit is not in accordance with the number of indoor units that succeeded with communi-
cation, then the four displaying parts will display
2) Sub(Slave) Unit
The two left hand displays show its own address and the two right hand displays show the outdoor unit's address.
Main address : C8, Sub1 address : C9, Sub2 address : CA, Sub3 address : CB
2. The number of the indoor Units Connected to the outdoor unit can be configured by using the indoor unit installation quantity setup
switch.
Samsung Electronics
Display content
SEG1
display
"8"
SEG1
Number of
connected
"A"
indoor units
SEG1
I/U : "A"
address
MCU : "C"
for Problem
Display
SEG2 SEG3 SEG4
"8" "8" "8"
SEG2 SEG3, 4 SEG3, 4
Number of
communicated units
Refer to
"d"
"View Mode" for
communication
address
SEG2 SEG3, 4 SEG3, 4
I/U : "0" Reception address
MCU : "1" (in decimal number)
.
b c e d b c e d
G2 G2
g a f g
G1
SEG1 SEG2 SEG3
Outdoor Unit Display Parts
Indoor Unit MCU
Installed Installed
Quantity Quantity
a f
G1
SEG4
81