Haier HCFU-18CF03 Service Manual page 84

0010451167 PCB information- control type
Control type selection between remote and wired: select by dip switch J1, SW3-1 1 means remote control
0means wired control .
For remote control type, please use remote controller, and a remote receiver is equipped with indoor unit.
Door card control: controls ON/OFF, the start up setting will comply with last time request memorized
according to condition memorize function. Its difference with emergency switch of convertible type unit lies:
the emergency switch control will perform in the condition: 24degrees, auto fan speed in auto mode.
The function combination between door card and remote/wired control type: select by dip switch: SW2-4 0
means "and", 1 means later coming is preferential.
Dip switch position in central control type: the addresses
with central controller can not repeat. In principle, they should be in the order from small to big.
Wiring request in central control type: port A-B is connected with indoor port CN16 A-B through 2-core
shield wire. Requirements:
1. Port A connects with port CN16 A of all indoor units.
2. Port B connects with port CN16 B of all indoor units.
LED in indoor PCB:
1. LED1 is the state lamp for remote receiver as well as failure lamp. If indoor unit is normal, LED1 is on,
or if failure occurs, LED1 flashes regularly, and you can adjust failure type according to the flash times.
2. LED2 is used for multi split units as communication lamp. If communication between indoor and
outdoor is normal, LED2 will be on.
3. LED3 is used for single split units as communication lamp. If communication between indoor and
outdoor is normal, LED3 will be on.
4. LED4 LED5 is the lamp that shows the data receiving or sending between wired controller and PCB,
If LED4 LED5 be on in turn, communication between wired controller and PCB is normal.
84
Commercial Air Conditioner
Model: HCFU-18/28CF03
SW1:1~4 SW2:1~4 of indoor units connected
HCFU-18/28HF03