50 Outdoor Unit
Refrigerant piping installation
Vacuum Mode
This function is used for creating vacuum in the system after compressor replacement, ODU parts replace-
ment or IDU addition/replacement.
Master main PCB DIP switch ON ( No.11,14)
Vacuum mode setting
ODU V/V OPEN
Main EEV, SC EEV OPEN
IDU EEV OPEN
ODU power reset
Press the black button Main PCB (5 sec.)
Main PCB
SW01S
Main PCB
SW02B
Main PCB
SW01V
ODU operation stops during vacuum mode. Compressor can't operate.
Vacuum mode setting method Vacuum mode cancellation method
Master main PCB DIP switch OFF( No.11,14)
Power reset
Vacuum mode cancellation
Caution
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