Testing Operations - Samsung UH140GAMC Installation Manual

Testing operations

Check the power supply between the outdoor unit and the auxiliary circuit
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breaker.
Single phase power supply: L, N
 Three phase power supply: L1, L2, L3
Check the indoor unit.
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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.
Connect the outdoor unit to your computer where the provided software is
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installed, then supply power to the outdoor unit.
If the outdoor unit is powered on, it will start tracking to check user's
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option(s) and number of indoor unit.
- 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.
5 Check the thermistor sensor, electronic expansion valve by using the
computer.
6 Press K2 on the outdoor unit PCB.
- 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.
Check that indoor and outdoor temperatures, step of electronic expansion
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valve and operation of compressor by using the computer.
Check that there is any error mode in the outdoor unit PCB during the test.
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- You should test operations for more than 30 minutes.
- Check that the water dripping from the drain hose runs away correctly
and safely.
To complete the test, press the test operation KEY(K2) again.
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E-