Haier HBU-42CH03 Operation & Installation Manual page 23

Installation Procedure
(2) Check if water drainage is smooth after installation.
Charge, through air outlet or inspecting hole, 1200ccd water to see water drainage.
(Just take HBU-28HH03 for example. For HBU-42CH03, HBU-42HI03, HBU-48CH03 there is no
inspecting hole).
After wiring
Check water drainage in cooling operation.
See also test run.
10
When wiring is not complete
Remove cover of control box, short connect
"CHECK" terminal of the indoor unit, which
is on the uper part of indoor unit PCB.
Connect 1PH power to terminal 1 and 2 on
terminal block.
Note: In this operation, fan will be running.
Upon confirmation of a smooth water
drainage, be sure to cut off power supply and
remove short connection of "CHECK"
terminal.
Wiring diagram
Outdoor unit terminal block
W B R
Y/G
1 2 3
1 2 3
W B R
Y/G
Indoor unit terminal block
HBU-28CH03
Outdoor unit terminal block
Y/G
R S T
Power supply
3N~,380-400V,50Hz
HBU-42CI03
HBU-36HH03
HBU-42CH03
1
HBU-42HI03
HBU-48CH03 W B R Y/G
HBU-48CK03
Indoor unit terminal block
Y/G
W B
Y/G
L N
Power supply
1PH,220-230V~,50Hz
N 1 2 3
2 3
NOTE: L,N and 1,2 are equal on the terminal block.
Self-provided stiff pipe
Water drainage port for
maintenance
(Drain water from
this hole)
100mm
Watering can of plastic
pipe should be about
100 mm long
Y/G
W B Y/G
L N
Power supply
1PH,220-230V~,50Hz
Y/G
Power supply
3N~,380-400V,50Hz
Y/G
21
Method of water charging
Charge water from
inspecting hole
Charge water from
air outlet
Outdoor unit terminal block
W B R BR GR
1 2 3 4
1 2 3
Y/G
W B R
Y/G
Indoor unit terminal block
HBU-28HH03
Indoor unit terminal block
1 2 3
R S T N 1 2 3
Outdoor unit terminal block
HBU-48HJ03
Inspecting hole
Y/G
Y/G
5
4 5
Y/G
Y/G