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4. TEST AND RUNNING
4.1 Gas Leakage Check
1. Soap water method
Apply a soap water or a liquid
neutral detergent on the indoor unit
connection or outdoor unit connections
(A: Low side valve, B: High side valve
valve C and D are ends of indoor unit
connection) by a soft brush to check
for leakage of the connecting points
of the piping. If bubbles come out, the
pipes have leakage point.
Fig.55
Outdoor
Unit
2. Leak detector
Use the leak detector to check for
leakage.
4.2 Electrical Safety Check
Perform the electric safety check after
completing installation:
1. Earthing work
the earthing resistance by visual
detection and earthing resistance
tester.
2. Electrical leakage check (performing
during test running)
installation,the service person can
use the electric probe and multimeter
to perform the electrical leakage
check. Turn off the unit immediately if
refrigerant leakage happens. Check
unit operate properly.
Indoor unit
check points
D
C
B
2-way
valve
A
3-way
valve
4.3 Operation Test
1. Before Operation Test
Do not switch on power before
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.
Liquid pipe
Press MODE button to select the
Gas pipe
COOL, HEAT (if applicable), FAN to
check if all the functions work well.
Outdoor unit
check points
When the ambient temperature is
be set on the remote control 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 Done
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.
Manual control
button
Manual control button
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