Oil Level Judgment Display - Toshiba R410A Service Manual

12. OIL LEVEL JUDGMENT DISPLAY

The judgment result of the current oil level of the compressor can be confirmed by the switch setup on the
interface P .C. board on the outdoor unit.
Confirm the result using the following procedure.
1. Operation procedure
Interface P.C. board on the outdoor unit
which displays oil level judgment
1) Start the operation.
2) Set the rotary switches SW01/02/03 on the interface P .C. board to 1/16/1.
3) The result of the oil level judgement is displayed on the 7-segment display.
7-segment display [oL] [A00]
The right 3 digits indicate the judgment result. The judgment results of the oil level in compressor 1 and
compressor 2 are displayed.
(Example: A ¡ o = ¡ : Oil level result of compressor 1, o : Oil level result of compressor 2
Display example
7-segment display
For the contents of judgment result, refer to the following table.)
7-segment display oil level results
7-segment display
0
1
2
A
B
C
D
4) After confirmation, return SW01/SW02/SW03 to (1/1/1).
[oL] [A00] : Oil level is good in compressor 1 and 2.
[oL] [A01] : Oil level is good in compressor 1 and short in compressor 2
[oL] [A20] : Oil shortage in compressor 1 and good in compressor 2
Judgment result in compressor 2
Judgment result in compressor 1
Judgment result
Appropriate Oil level inside of the compressor is appropriate.
Shortage of oil level in the compressor (Both A1 and A2 indicate shortage.)
Shortage
If this judgment continues, the system stops for protection.
TK1 circuit error is found.
TK1 circuit error
If this judgment continues, the system stops for protection.
TK2 circuit error is found.
TK2 circuit error
If this judgment continues, the system stops for protection.
TK3 circuit error is found.
TK3 circuit error
If this judgment continues, the system stops for protection.
TK4 circuit error is found.
TK4 circuit error
If this judgment continues, the system stops for protection.
1)
Operation starts.
3)
Result of oil level
judgment is displayed.
2)
Set SW01/SW02/SW03 After confirmation, return
to 1/16/1. SW01/SW02/SW03 to 1/1/1.
Contents
190
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