Remote Control 
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can set the parity bit in the menu using the front panel  (Shift) +    key.   
Parity options are stored in a non-volatile memory. 
Baudrate 
The front panel  (Shift) +    (Menu) button allows the user to set 
baud rate which is stored in the non-volatile memory: 4800,9600,19200 
38400, 57600,115200 
RS-232 connection 
Adopt the RS232 cable with DB-9 interface because the serial port of RS232 
can be connected with that of the controller (e.g. PC). The modulating cable of 
the air-conditioner  is  not  recommended. The pins  of  plug  are shown as  the 
following table. 
If your computer is provided with a RS232 interface with DB-25 plug, a cable 
and a adapter with DB-25 plug (one end) and DB-9 plug (the other end) are 
required (not the modulating cable of the air-conditioner) 
 
RS-232 Troubleshooting 
In case of connection failure of RS232, perform following check: 
⚫  Check  if  the  computer  and  power supply are  provided  with  same 
Baud  rate,  parity  check  bit,  data  bit  and  flow  control.  The  power 
supply shall be configured with one start bit (fixed) and one or two 
stop bits. 
⚫  Just  as  described  in  the  RS232  connector,  appropriate  interface 
cable  or  adapter  shall  be  adopted.  Notes:  even  if  the  cable  is 
equipped with right plug, internal wiring may be incorrect. 
⚫  The interface cable must be connected to the right serial port (COM1 
and COM2) of the computer. 
Communication Setup 
Please ensure the PC and power  supply  has  the  same  configuration  in  the 
following items.