ENGLISH
E-
25
Testing operations
Check the power supply between the outdoor unit and the auxiliary circuit
breaker.
Single phase power supply: L, N
Three phase power supply: L1, L2, L3
1
2-1 Check that you have connected the power and communication
cables correctly. (If the power cable and communication cables one
mixed up or connected incorrectly, the PCB will be damaged.)
2-2 Check the thermistor sensor, drain pump/hose, and display are
connected correctly.
Check the indoor unit.
2
Connect the outdoor unit to your computer where the provided software is
installed, then supply power to the outdoor unit.
3
- If you press K2, the compressor starts operation.
Operate the compressor for 20 minutes, then add refrigerant according
to the graph shown on page 26~28.
- If you press K2 again, test operation is started.
- If you don't stop the operation of adding refrigerant, it will be stopped
automatically after 1 hour.
- If you don't stop test operation, it will be stopped automatically
after 1 hour.
- If K2 is pressed during the operation of adding refrigerant, test operation
is started without compressor stopping. Therefore, start test operation
after the operation of adding refrigerant.
- The compressor can be operated after completely 3-minute preparation
and tracking.
- When testing operations at Heating Mode, press K1 instead of K2.
- At this time, the SEG 1 and SEG 2 on outdoor unit PCB display the
number of indoor unit registered and the SEG 3 and SEG 4 display
the number of indoor units which responded.
- If an error mode is displayed, fix the error according to the service
manual.
If the outdoor unit is powered on, it will start tracking to check user's
option(s) and number of indoor unit.
4
Check the thermistor sensor, electronic expansion valve by using the
computer.
5
Press K2 on the outdoor unit PCB.
6
- You should test operations for more than 30 minutes.
- Check that the water dripping from the drain hose runs away correctly
and safely.
Check that indoor and outdoor temperatures, step of electronic expansion
valve and operation of compressor by using the computer.
7
Check that there is any error mode in the outdoor unit PCB during the test.
8
To complete the test, press the test operation KEY(K2) again.
9
