Check Procedure To Search Cause Of Compressor Oil Shortage - Toshiba MMY-MAP1006FT8(J)P-E Service Manual

11-3. Check Procedure to Search Cause of Compressor
Oil Shortage
Are the balance pipes of
all outdoor units connected to the
same refrigerant line fully open?
any miswiring or incorrect
connection of TK1, TK2, TK4 and
TK5 sensor in the unit that has
replaced compressor?
characteristics of the TK1,
TK2, TK4 or TK5 sensors of the unit
that has replaced compressor
With the compressor(s) disconnected,
check the oil circuit in accordance
with the procedure described below.
Yes
Are there
Yes
Are the
correct?
Yes
(To next page)
Open the balance pipe valves fully.
No
Correct the miswiring or connection.
TK1: CN531 TK2: CN532
No
TK4: CN534 TK5: CN535
Replace the troubled sensor.
No
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