Installation Checklist
Check the following points before testing the unit:
NO.
Item to be checked
Possible problem
1
Have the indoor and outdoor units been
securely installed?
The units may fall, vibrate or make noise.
2
Has the refrigerant leak test been
completed?
Unresolved leaks may cause insufficient
cooling or heating.
3
Have the pipes been properly insulated?
Lack of insulation may cause condensation
and water damage.
4
Is the water condensate drainage
sufficient?
Lack of proper drainage may cause
condensation and water damage.
5
Does the voltage of the power supply
comply with the voltage on the nameplate?
Improper wiring can create malfunction and
fire or electrocution hazard.
6
Is the electric wiring and drain piping
installed correctly?
Improper wiring and drainage can create
a malfunction, fire or electrocution hazard
and water damage to the unit and property.
7
Is the unit grounded properly?
Improper grounding can cause malfunction
and fire or electrocution hazard.
8
Does the power cord match the unit
requirements?
Improper wiring can create malfunction and
fire or electrocution hazard.
9
Are there any obstructions near the air
inlets and air outlets for the indoor and
outdoor units?
Improper ventilation and airflow will cause
insufficient cooling and heating.
10
Have dust and debris been cleaned and
removed from the installation site?
Excessive dust and debris in and around
the units may cause a malfunction or
damage to the units.
11
Are the gas valve and liquid valve of the
connection pipes open completely?
Restricted refrigerant flow may cause
insufficient cooling or heating.
Test Operation:
1. Turn on main power to the units.
2. Using the remote control, press the ON/OFF button to start operation.
3. Press the MODE button to select and test each option for normal operation. Cycle through all
functions: AUTO, COOL, DRY, FAN and HEAT.
4. Note: If the ambient temperature is lower than 61°F (16°C) the air conditioner will not run in
COOL mode.
5. Go over basic operating, maintenance and troubleshooting functions with the customer.
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Ceiling Concealed Unit
