Toshiba RAV-SM1603AT-E Service Manual page 108

[P04 error]
NO
Check TE, TC, TS sensors.
Replace electron expansion valve.
Is high-voltage
protective operation by
TE sensor normal?
YES
Does cooling outdoor fan
normally operate?
YES
Does PMV normally operate?
YES
Check charged refrigerant amount.
Check liquid/gas valves.
Check abnormal overload.
NO
Is connection of cabling
connector normal?
YES
NO
Is connection of
connector normal?
YES
Is fan motor normal?
YES
Do not TD and TO sensors
come off the detection part?
YES
Are characteristics of
TD, TO, TC sensor resistance
∗
values normal?
YES
∗
Refer to 10-2-6. Relational graph of temperature sensor
resistance value and temperature Characteristics-3, 4.
– 108 –
NO
Correct connection
of cabling connector.
Check TE sensor.
Defect → Replace
NO
Correct connection
of connector.
NO
Replace fan motor.
NO
Correct coming-off.
NO
Replace TD, TO,
and TC sensors.
Check CDB.
Defect → Replace