AEG EXN09C58HW Installation Manual page 20

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4.3 Operation Test
1. Before Operation Test
• Do not switch on power before
installation is finished completely.
• Electric wiring must be connected
correctly and securely.
• Stop valves of the connection pipes
should be fully opened.
• All the impurities such as scraps
and waste must be cleared from
the unit.
2. Operation Test Method
• Switch on power and press
"ON/OFF" button on the remote
controller to start the operation.
• Press the button to select the
COOL, HEAT (if applicable), FAN
or any other mode to check if all the
functions work well.
• When the ambient temperature is
lower than setting temperature),
the unit can not be set on the
remote controller to work in COOL
mode. Please use the Emergency
Operation mode which is used only
when the remote is unavailable or in
case of maintenance.
4.4 Pump Down
When relocating or disposing of the air
conditioner, pump down the system
following the procedure below so that
no refrigerant is released into the
atmosphere.
• Connect the hose of manifold valve to
the charge port of stop valve on the
gas pipe side of the outdoor unit.
• Close the stop valve on the gas pipe
side almost completely.
• Fully close the stop valve on the liquid
pipe side.
• Turn on the unit in COOL mode.
• Fully close the stop valve on the gas
pipe side when the pressure gauge
shows 1 - 0.5 kgf/cm2 (100 ~ 50 kPa).
• Stop the operation by turn the unit off
and all the refrigerant gas has been
collected in the outdoor unit.
4.5 Check After Installation
Items to be checked
Has the unit been fixed
firmly?
Have you done the
refrigerant leakage test?
Is thermal insulation
sufficient?
Is water drainage
satisfactory?
Is the voltage in
accordance with the
rated voltage marked on
the nameplate?
Is the electric wiring
or piping connection
installed correctly and
securely?
Has the unit been
securely earthed?
Is the power cord
specified
Is the air inlet or outlet
blocked
Are the stop valves of
the connection pipes
fully opened?
Possible malfunction
The unit may drop, shake
or emit noise.
It may cause insufficient
cooling (heating)
It may cause
condensation.
It may cause water
leakage.
It may cause electric
malfunction or damage
the unit.
It may cause electric
malfunction or damage
the parts.
It may cause electrical
leakage.
It may cause electric
malfunction or damage
the parts.
It may cause insufficient
cooling (heating)
It may cause insufficient
cooling (heating)