Haier 2U18MS2HDA Manuel D'installation page 27

INSTALLATION INSTRUCTIONS
Wiring Check Test
Turn off power at the disconnect. Move all dip
switches in the SW1 bank to ON. When power is turned
on, the LED display will alternate the compressor
frequency and CH (check). The system will run through
each unit (A, B, C, D, and E), cycling each EEV while
testing the wiring. A successful test will be indicated
by the corresponding LED displaying a constant
green (1=A, 2=B, 3=C, 4=D, 5=E). Mis-wired units will
generate an EC on the display, with the corresponding LED
flashing green.
Display 1 (Port A)
Shows
Compressor
Speed.
Flashing
numbers are
current faults
System Test
Please explain to the customer how to operate the
system by using the Owner's Manual found with the
indoor unit.
Explaining Operation To the End User
• Using the User Manual, explain to the user how to
use the air conditioner/heat pump, (the remote
controller, adding/removing the air filters, placing
or removing the remote controller from the remote
control holder, cleaning methods, precautions for
operation, etc.)
• Review precautions for operation.
• Recommend that the user read the Operating
Instructions carefully.
31-5000564 Rev. 4
Step 4 - Final Check
2 (Port B) 3 (Port C) 4 (Port D) 5 (Port E)
OFF
ON/OFF
Green LEDs
No power to unit.
Unit is recently powered on and
communication started.
When LED is ON, that indoor unit has built a
communication path and will operate.
When LED is OFF, there is no indoor unit
installed or there is bad communication.
Check Items for Test Run
No gas leak from linesets?
Are the linesets insulated properly?
Are the connecting wirings of indoor and outdoor
firmly inserted to the terminal block?
Is the connecting wiring of indoor and outdoor
fixed?
Is condensate draining correctly?
Is the ground wire securely connected? Is the
indoor unit securely fixed?
Is power source voltage correct according to local
code?
Is there any odd noise?
Does the cooling temperature drop between
20-30°F?
Does the heating temperature raise between
35-40°F?
Is the room temperature display accurate?
Message
27