Electric Wiring And The Application; General Check; Inspect; Connection - Haier AU082FYCRA(HW) Service Manual

14.5 Electric wiring and the application

General check

•Make sure that the following conditions related to power supply installation are satisfied:The power capacity of the
electrical installation is large enough to support the power demand of the HAIER system.
The power supply voltage is within ±10% of the rated voltage.
The impedance of the power supply line is low enough to avoid any voltage drop of more than 15% of the rated
voltage.
•Following the Council Directive 2004/108/EC, relating to electromagnetic compatibility, the table below indicates
the Maximum permitted system impedance Zmax at the interface point of the user's supply, in accordance with
EN61000 3 11.
Model
AU082FYCRA(HW)
AU112FYCRA(HW)
AU162FYCRA(HW)
•Switch off the main power switch of the indoor and outdoor machine for more than 1 minutes before the wiring or
regular inspection.
•To prevent the destruction of wires and electrical components by rats or other animals. Serious, it may lead to the
occurrence of fire.
•To avoid damage to the wire, avoid contact with refrigerant pipes, steel edges and electrical components. Serious,
it may lead to the occurrence of fire.
•Secure the power cord with a wire tie in the machine.
Note:
When the wiring of the outdoor machine is not using the wire, it should be fixed with the rubber ring
•In the case of 3 phase 5 wire type, the power supply of the indoor machine must be connected use L1 line and N
line, prohibit the use of L1-L2, L1-L3, Otherwise the electrical part will be damaged.

Inspect

•To ensure that the electrical equipment used on the installation site (main power switch, circuit breaker, wire,
conduit and wiring terminals, etc.) have been selected according to current data, to ensure that the device in line
with national standards.
•Check the power supply voltage in the range of 10% of the rated voltage and the ground wire is included in the
power supply line. Otherwise, electrical parts will be damaged.
• .Check whether the power supply is satisfied. Otherwise, the compressor will not start when the voltage is too low.
•By measuring the insulation resistance between the ground and the electrical device terminals, to ensure that
more than 1 MΩ. Otherwise, the system can not be started until the cause of leakage and maintenance.

Connection

•Connect the power cord to the terminal of the indoor unit and the outdoor mechanical and electrical gas box,
connect the ground wire to the grounding bolt of the outdoor machine and the indoor mechanical and electrical air
box.
•Connect the external and internal communication lines to the 1 and the 2 terminals on the terminal. If the power
cord is connected, the printed circuit board will be damaged. And the use of shielded twisted pair wire.
•Do not connect the fastening screws on the front of the cover.
• The power cord must be made of copper wire, and the power supply must be in line with IEC 60245 requirements.
If the power cord length exceeds 20m, the need to increase the size.
• The power supply line is fixed with a round connection terminal with an insulating protective sleeve. Not with sheet
metal contact and extrusion, in order to avoid the cut line of skin caused by fire.
Power supply
1~ 230V 50Hz
WARNING
CAUTION
CAUTION
51
ZMax.(Ω)
0.35
0.24
0.24