Test and Running
Gas Leakage Check
1 Soap water method:
Apply soap water or liquid neutral detergent on
all valves and pipe connections (A, B, C and D,
by a soft brush to check for leakage.
If bubbles come out, the pipes have leakage.
Indoor unit
check points
Outdoor
Unit
2-way
valve
3-way
valve
2 Leak detector
Use the leak detector to check for leakage.
Electrical Safety Check
Perform the electric safe check after completing the
installation:
1 Earthing work
earthing resistance by visual detection and
earthing resistance tester.
2 Electrical leakage check
(performing during test running)
the service person can use the electric probe
and multimeter to perform the electrical leakage
check. Turn off the unit immediately if refrigerant
solution ways till the unit operate properly.
21
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1 Before Operation Test
2 Operation Test Method
Liquid pipe
Gas pipe
Outdoor unit
check points
Operation Test
Do not switch on power before installation is
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.
on the remote controller to start the operation.
Press MODE button to select the COOL,
HEAT (if applicable), FAN to check if all the
functions work well.
When the ambient temperature is lower than
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.
Manual control
button
Manual control button