Samsung AM072BXV Series Service Manual page 86

Troubleshooting
4-3 Appropriate Measures for Different Symptom
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
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
communication, 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
■
Quantity of indoor unit [Push Button Type]
Display
Samsung Electronics
Display content
SEG1
Checking segment
display
"8"
SEG1
Number of
connected
"A"
indoor units
SEG1
I/U : "A"
address
MCU : "C"
• Manual setting mode (Default).
- Press the K2 button shortly : Setting a 10-digit
- Press the K4 button shortly : Setting a 1-digit
• Automatic settings mode (Option)
Press and hold the K4 button : It is changed to the automatic setting mode,
and displays the number of the connected indoor unit.
(Ex. Of 10 indoor units are connected, "id 10" is indicated.)
- If press the K2, K4 button shortly in the automatic setting mode, it is changed to the manual
mode. (Ex. If 10 is indicated and press the K4 button, 11 is indicated and changed to the manual
mode.)
for Problem
Display
SEG2 SEG3 SEG4
"8" "8" "8"
SEG2 SEG3, 4 SEG3, 4
Number of
communicated units
※ Refer to "View
"d"
Mode" for
communication
address
SEG2 SEG3, 4 SEG3, 4
I/U : "0" Reception address
MCU : "1" (in decimal number)
.
Description
b c e d b c e d
G2 G2
g a f g a f
G1
SEG1 SEG2 SEG3 SEG4
Outdoor Unit Display Parts
G1
80