Table of Contents
Advertisement
TEST RUNNING
Safety and leakage check
Electrical safety check
Perform the electric safe check after completing installation:
1. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and
grounding resistance tester.
2. Electrical leakage check (performing during test running)
During test operation after finishing installation, the service person can use the electroprobe
and multimeter to perform the electrical leakage check. Turn off the unit immediately if
leakage happens. Check and find out the solution ways till the unit operate properly.
Gas leak check
1. Soap water method:
Apply a soap water or a liquid neutral detergent
on the indoor unit connection or outdoor unit
connections by a soft brush to check for leakage
of the connecting points of th piping. If bubbles
come out, the pipes have leakage.
2. Leak detector
Use the leak detector to check for leakage.
CAUTION
A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.
Test running
Perform test operation after completing gas leak check at the flare nut connections and
electrical safety check.
Check that all tubing and wiring have been properly connected.
Check that the gas and liquid side service valves are fully open.
Connect the power, press the ON/OFF button on the remote controller to turn the unit on.
Use the MODE button to select COOL, HEAT, AUTO and FAN to check if all the functions
work well.
When the ambient temperature is too low (lower than 17 C), the unit cannot be controlled by
the remote controller to run at cooling mode, manual operation can be taken. Manual
operation is used only when the remote controller is disable or maintenance is necessary.
Hold the panel sides and lift the panel up to an angle until it remains fixed is a clicking
sound.
Press the Manual control button to select the AUTO or COOL, the unit will operate under
Forced AUTO or COOL mode (see User Manual for details).
The test operation should last about 30 minutes.
Manual control
AUTO/COOL
button
22
Indoor unit
check point
Cover
Outdoor unit
check point
Fig.25
O
D
C
B
A
Advertisement
Table of Contents
