Check Procedure To Search Cause Of Compressor Oil Shortage - Toshiba MMY-MAP0804HT8-E Service Manual

11-3.Check Procedure to Search Cause of Compressor Oil
Shortage
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Are the balance pipes of
all outdoor units connected to the
same refrigerant line fully open?
Yes
Are there
any miswiring or incorrect
connection of TK1, TK2, TK3, TK4 and
TK5 sensor in the unit that has
replaced compressor?
Yes
Are the
characteristics of the TK1,
TK2, TK3, TK4 or TK5 sensors of the
unit that has replaced compressor
correct?
Yes
With the compressor(s) disconnected,
check the oil circuit in accordance
with the procedure described below.
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manuals search engine
Open the balance pipe valves fully.
No
Correct the miswiring or connection.
TK1: CN531 TK2: CN532
TK3: CN533 TK4: CN534
No
TK5: CN535
Replace the faulty sensor.
No
260