Samsung UDH4400G, Service Manual

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3-4 Samsung Electronics
Installation
3-2-3 Group Operation method of wired remote controller
• Press the ON/OFF button of wired remote controller to be on.
At the time, the set installed from A chamber to P chamber is getting on in order with the interval of 2
seconds.
• Select the operation of auto/cooling/dehumidi-fying/blowing/heating by pressing MODE BUTTON.
• Select breeze/mild/strong wind by pressing the wind volume button.
• Adjust the temperature set button to set the desired temperature.
✽ For reference
• The communication between wired remote
controller and indoor unit is made through the
synchronization with the output signal of zero
cross detect circuit, and when 50Hz power is
used, it has the 50bps transmission speed and
when it has 60Hz power it has 60bps transmission
speed. The transmission data between the wired
remote controller and indoor unit is shown as in
the figure.
Since the communication data between wired remote
controller and indoor unit is consisting of total
10Byte, 2 seconds are required when using 50Hz
power.
• For the communicating time with 16 chambers
during the normal operation, 32 seconds are
required and for the time with 16 chamber during
the reservation operation, 64 seconds are required
due to the increase of communicating data.
R1 R2 R3
R1 R2 R3
Indoor unit
"A" chamber
R1 R2 R3
Indoor unit
"B" chamber "C" ~ "N" chamber
R1 R2 R3
Indoor unit
"O" chamber
R1 R2 R3
Indoor unit
"P" chamber
Wired remote
controller
Figure. 16 Chamber Group Control(wired remote controller) Connection Diagram
Indoor unit
RECEIVE MODE
SEND MODE
Wired remote
controller
2-00216A(1)-PR 5/19/01 10:05 AM Page 3-4