Samsung Electronics 80
Troubleshooting
Initial Tracking (Communication Check-up)- Display for Problem
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
-
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
-
Main address : C8, Sub1 address : C9, Sub2 address : CA, Sub3 address : CB
g
SEG1
a f
G1
G2
b c e d
SEG2
g
SEG3
a f
G1
G2
b c e d
SEG4
Outdoor Unit Display Parts
Step Display content Display
At initial power input
Checking segment
display
SEG1 SEG2 SEG3 SEG4
While setting
communication
between indoor and
outdoor unit
(Addressing)
Number of
connected
indoor units
SEG1 SEG2 SEG3, 4 SEG3, 4
Number of
communicated units
communication
address
After communication
setting
(usual occasion)
Transmit/Reception
address
SEG1 SEG2 SEG3, 4 SEG3, 4
I/U : “A”
MCU : “C”
I/U : “0”
MCU : “1”
Reception address
(in decimal number)
4-3 Appropriate Measures for Different Symptom
4-3-1 Outdoor Unit Test Operation Flow (cont.)
Quantity of indoor unit [Push Button Type]
Display Description
• 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.
- 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.)
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