65
Oil Level Judgment Display
The current compressor oil level judgment results can be accessed by setting the switches provided on the inter-
face P.C. board of an outdoor unit.
Perform the checks in accordance with the procedure described below.
1
Operation Procedure
(1) Start the operation.
(2) Set the switches provided on the interface P.C. board of the outdoor unit for which oil level judgment results
are required as follows: SW01/SW02/SW03 = 1/16/1
(3) The oil level judgment result will be displayed on the 7-segment display.
7-segment display: [oL] [#. ”.$]
The letters #, ” and $ are digits that represent judgment results for compressor Nos. 1, 2 and 3, respectively.
(See the table below for the interpretation of the judgment results.)
(4) When checking is completed, revert the SW01/SW02/SW03 setting to [1/1/1].
1
Start operation.
3
2
4
Interface P.C. board of outdoor unit for
which oil level judgment results are
Oil level judgment
results are displayed
Set SW01/SW02/SW03 to
1/16/1.
Upon completion of checking, revert
SW01/SW02/SW03 setting to 1/1/1.
Displayed digit
Judgment result
Description
0
Normal
The amount of oil in the compressor is sufficient.
1
2
Low level
The amount of oil in the compressor is insufficient. (Both “1” and “2” stand for insufficiency.)
If this result persists, the system will turn itself off in a protective shutdown.
7-segment display
[ oL ]
[ oL ]
[ oL ]
Oil level is normal for compressors 1, 2 and 3.
Oil level is low for compressors 1, 2 and 3.
Oil level is low for compressor 2 and normal for compressors 1 and 3.
Judgment result for compressor 3
Judgment result for compressor 2
Judgment result for compressor 1
[ 0 0 0 ]
[ 2 2 2 ]
[ 0 2 0 ]
2
Oil Level Judgment Results
Display example
