Haier AU482FIBHA Service Manual page 48

Wiring method
1. Wiring method of orbicular terminals
For the connection wire with orbicular terminals, its wiring method is as shown in the
right figure: remove the connecting screw, put the screw through the ring on the end of
the wire, then connect to the terminal block and fasten screw.
2. Wiring method of straight terminals
For the connection wire without orbicular terminals, its wiring method is: loosen the
connection screw, and insert the end of the connection wire completely into the terminal
block, then fasten the screw. Slightly pull the wire outwards to confirm it is firmly held.
3. Crimp connection method for wires without terminals
Crimp connection method for connection wire
After connection, the wire must be fastened by wire cover. The wire cover shall press on the
protection coat of the connection wire, as shown in right top figure.
Note: When connecting the wiring, confirm the terminal number of indoor and outdoor units
carefully. The terminals with same number and color connect with a same wire. Incorrect
wiring will damage the controller of air conditioner or the unit
can not operate.
Wiring method of outdoor unit:
l Power line (connects from outdoor unit)
Remove the repair board of the outdoor unit and loosen the
wire cover A, then put the live wire, neutral wire and
grounding wire through the wire cover A, and connect them
to terminal block correspondingly. After connection, fasten
wire cover A to its previous state.
l Power line and communication wire of indoor unit
Loosen wire cover B and C, put the power line and communication wire connected with
A, B system indoor unit through the wire cover B and C, and connect them to terminal
block correspondingly. After connection, fasten wire cover B and C to its previous state.
Note: Power line, connection wire and communication wire are provided by consumers
themselves.
Wiring method of indoor unit
l Power line and communication wire of indoor unit
oosen wire cover and connect the power line and communication wire of indoor unit to
L
the terminal correspondingly.
l Drive wire of electronic expansion valve
Air-connect the drive wire of electronic expansion valve with the down-lead from the
control base board of indoor unit.
After the above connection, fasten the wire cover to its previous state.
Wiring method of electronic expansion drive
Open the box cover of the drive and put the drive wire of electronic expansion valve
through the rubber ring, then correspondingly connect the connection wire with the
terminal of control base board of the drive. Use nut to connect the grounding wire on the
drive box and use wire clamp to fasten the wire. Put on the cover, the wiring connection
is finished.
Note:
When connecting power line to power supply terminal, please pay attention to the following
items:
1. Do not connect the power line with different dimensions to the same connection wire end.
Improper contact will cause heat generation.