Toshiba MMK-AP0072H Service Manual page 96

A
Is SV4 circuit normal?
YES
Refrigerant overcharge,
clogging,pipe breakage,
abnormal overload condition
Is there a cause to
interfere operation of
YES
indoor heat exchanger?
1 Air filter clogging
2 Heat exchanger clogging
3 Air short circuit
Eliminate the
interfered causes.
NO
Is SV5 circuit normal?
Repair faulty position.
Connector connection,
cabling, coil installation,
clogging, etc
NO
Are not indoor units of different
refrigerant circuit connected?
Check and
correct the cabling.
Refrigerant overcharge,
clogging, pipe breakage,
abnormal overload condition
Repair SV4 circuit.
NO
(
Coil error, clogging,
disconnection of wiring, etc.
NO Is connector
Is indoor
connection,
PMV normal?
coil normal?
YES
YES
NO
YES
Is there clogging
of valve?
YES
(Check with miscabling check function of outdoor unit.)
)
Heating operation
YES
Does heating indoor fan
normally operate?
NO
Repair
faulty parts.
Are connector connection,
heat exchanger, fan, and
fan motor normal?
Are characteristics of TC2
and TCJ sensor resistance
value normal?
YES
Check indoor P.C. board.
Failure
NO
96
FILE NO. SVM-05052
C
NO
NO
YES
Repair
faulty parts.
NO
YES
Replace TC2
or TCJ sensor.
Replace
Replace PMV body.