Haier AU242FHBHA Installation Manual page 17

Installation Procedures
Notice:
When connecting power wire to terminal row, please notice following precaution.
1.Please do not connect power wires with different dimension to the same connecting terminal.
loose contact may cause heat generation.
2.Please do not connect with different dimension to the same grounding terminal.
loose contact may influence protection.
3.Keeping a proper distance between communication wire and power wire, otherwise it may cause
abnormal communication because of disturbance.
4.Do not connect power wires to communicating wire's connecting terminal. The connected machine could be damaged
if connecting mistakes exist.
Example figure of wiring
Model: Outdoor
AU482~522
Outdoor Indoor
L N C1 C2
B W R R
Y/G
Air switch
"Indoor 1"
control board
Outdoor power supply
1PH.220-230V~.50Hz
C1 C2 1 2 3
Indoor power supply
1PH.220-230V~.50Hz
Example figure of wiring
Model: Outdoor
AU242~342
NOTE: 1. Ceiling concealed type must be connected MP2A or MP3A (TES indoor units not included).
2. Connect method of MP3A is follwing
Outdoor control circuit
L N
Short circuit protector
outdoor power supply
1PH.220-230V~.50Hz
NOTE
1.The power supply and communication wiring of indoor electronic expansion valve must be connected with their
corresponding indoor unit.And their phase sequence must correspond with the remarks strictly respectively, or will
cause control board of indoor unit and electronic expansion valve box abnormal or damaged.
2.Because the power supply of MP3A control board is joined from "indoor 1","indoor 1" must be always electrified
in running mode, or will cause performance abnormal.
3.MP3A wiring and indoor wiring: H05RNF 4 x (1.0-1.5)mm
Electronic expansion valve
driver board(MP3A)
Y/GR
B W BR B W BR B W BR
L1 N1 C1 L2 N2 C2 L3 N3 C3
"Indoor 2" "Indoor 3"
control board control board
C1 C2 1 2 3 C1 C2 1 2 3
Indoor power supply Indoor power supply
1PH.220-230V~.50Hz 1PH.220-230V~.50Hz
Outdoor Indoor
Y/G
C1 C2
"Indoor 1"
control board
C1 C2
Example figure of wiring
Model: Outdoor
AU48N~60N
Outdoor
C1 C2
R S T N
R R
Air switch
Outdoor power supply
3N~.380-400V.50Hz
Electronic expansion valve
driver board(MP3A)
"Indoor 2"
control board
Y/G
W B R
W B R
C1 C2
1 2 3 1 2 3
Indoor power supply Indoor power supply
1PH.220-230V~.50Hz 1PH.220-230V~.50Hz
2
,H05RNF 3x(1.0-1.5)mm
16
Electrical wiring
Indoor
Electronic expansion valve
driver board(MP3A)
B W BR
L1 N1 C1
"Indoor 1" "Indoor 2"
control board control board
C1 C2 1 2 3 C1 C2 1 2 3
Indoor power supply
Indoor power supply
1PH.220-230V~.50Hz
1PH.220-230V~.50Hz
B W BR B W BR B W BR
Y/G
L1 N1 C1 L2 N2 C2 L3 N3 C3
"Indoor 3"
control board
Y/G
Y/G
W B R
C1 C2 1 2 3
Indoor power supply
1PH.220-230V~.50Hz
2
Y/GR
B W BR B W BR
L2 N2 C2 L3 N3 C3
"Indoor 3"
control board
C1 C2 1 2 3
Indoor power supply
1PH.220-230V~.50Hz