Toshiba RAV-SP1104AT8-E1 Service Manual page 60

Check Outdoor
code LED display
[P05] <Display 1> <Display 2>
[P07] <Display 1> <Display 2>
[P15] <Display 1> <Display 2>
[P19] <Display 1> <Display 2>
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Power supply error (Voltage error)]
Is there no open phase
of the power supply?
NO
Is there no down or up
of power supply voltage?
(AC342 to 457V)
NO
[Heat sink overheat error]
Is there no loosening of
screws of motor drive element of
outdoor P.C. board (MCC-1596) Q201?
Did not forget to apply radiation grease
to rear side of Q201?
NO
Is not the ventilation flue
of the heat sink blocked?
Is not the fan blocked?
(Short-circuit, etc.)
YES
[Gas leak detection]
Is there no gas leak?
Is refrigerant charge amount adequate?
YES
Is PMV normal?
YES
Is valve fully opened?
YES
Is there no crushed pipe?
NO
Check temp. sensor.
TD sensor CN603, TS sensor CN600
OK
[4-way valve inverse error]
Is operation of
4-way valve normal?
(Check pipe temp., etc. in
cooling/heating operation.)
NO
Is power supplied
to 4-way valve coil?
YES
Check operation of
outdoor I/F (CDB) P.C. board.
OK
– 60 –
YES
Correct wiring.
YES
Confirm electric construction, etc.
Check outdoor P.C. board (MCC-1600).
Defect → Replace
Apply radiation grease
YES
to objective part.
Retightening of screws.
NO
Remove blocking matter.
Correct short-circuit.
Check outdoor P.C. board (MCC-1596).
Defect → Replace
NO
Repair defective position.
Recharge refrigerant.
NO
Correct defective position.
Replace defective part.
NO
Open valve fully.
YES
Correct and replace piping.
Error
Correct connector.
Sensor error → Replace
Check outdoor P.C. board (MCC-1599).
Defect → Replace
Temperature sensor check
TE sensor CN601
YES
TS sensor CN600
Indoor TC sensor
Defect → Correct and repair
NO
Replace coil of 4-way valve.
Error
Check outdoor P.C. board.
Defect → replace
Check 4-way valve.
Defect → Replace