Haier HCFU-42CF03 Service Manual page 53

The standard condition for HCFU-42CF03 PCB in factory:
SW1 4 bits are OFF
SW2 4 bits are OFF
SW3 1 ON 2 ON 3 OFF 4 ON
SW4 1 OFF 2 ON
SW5 1 OFF 2 ON 3 ON 4 OFF
The standard condition for HCFU-42HF03 PCB in factory:
SW1 4 bits are OFF
SW2 4 bits are OFF
SW3 1 ON 2 ON 3 OFF 4 ON
SW4 1 ON 2 ON
SW5 1 OFF 2 ON 3 ON 4 OFF
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Commercial Air Conditioner
Model: HCFU-42CF03
HCFU-42HF03