3-2 Checking and Testing Operations (Outdoor Unit)
To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating correctly.
1.Review all the following elements in the installation:
•Installation site strength
•Piping connection tightness to detect any gas leakages
•Connection wiring
•
•Drainage
•Earthing wire connection
•Correct operations (follow the steps below)
•Room select switch in the indoor unit
2.Apply the power to the outdoor unit.
-Check the fuse (250V~, 5A) : The fuse is open when the power line (L1, N2) is short.
OUTDOOR UNIT |
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| a |
| TEST OPERATING | |
C | B | A |
b | C |
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A : PCB display |
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B : Red LED |
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C : PCB switch |
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3.Check the connection of PCB communication of outdoor unit. (Check whether the red LED of outdoor unit PCB is flickering.)
•The communication lamp is flickering after the display of each unit on the outdoor PCB display part. (every one second). LED is not flikering, if the connection is bad or the room select switch is located in the wrong position.
-LED lamp (red) flickering after display of A (0.5 sec)
-LED lamp (red) flickering after display of b (0.5 sec)
-LED lamp (red) flickering after display of C (0.5 sec)
Note : PCB switch “C” is used for triple split multi air conditioner.
Result : If all of three units display lamps are flickering, the connection wires and the room option connections are good.
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