Installation Manual
53
Test Run
1. Test run should be performed after auto-addressing
2. Test run can be performed when 3 minutes passed after power on, by DIP switches and buttons. -
needs time for initializing data of micom and readying communication with indoor unit.
3. 7-segment of outdoor unit displays test run status and error.
4. During test run, if error occurs, then test run ends and proceeds final stage of test run
-
system should be initial status by initializing all data of test run pressing black button for 2 seconds
after all DIP switch off
5. In case of finishing test run during test run, press black and red button simultaneously for 5
seconds.
6. When test run is finished, indoor units are stopped and 938 is displayed after 90 seconds.
7. To perform FDD logic test, proceeds when 3 minutes passed after reset.
Step 0. Check order signal
Select the function of tust run
Step 1. Sensor checking
Check sensor abnormality.
Step 2. Refrigerant auto charging
In case of adding additional refrigerant, this function helps adding refrigerant automatically.
Step 3. Refrigerant checking
Check refrigerant amount is proper.
Test Run
Checks before Test Run
Test Run Procedure
CAUTION
when cutting main power of the Multi V
• Always apply main power of the outdoor unit during use of product
(cooling season/heating season).
• Always apply power 6 hours in advance to heat the crank case heater where performing test run
after installation of product. It may result in burning out of the compressor if not pre-heating the
crank case with the electrical heater for more than 6 hours.(In case of the outdoor temperatue
below 10°C)
Summary of Contents for ARUN50LH2A
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