Toshiba RAV-SP1104AT8-E Service Manual page 77

Check Outdoor
code LED display
[P05] <Display 1> <Display 2>
¡
¡
l
¡
¡
¡
[P07] <Display 1> <Display 2>
¡
¡
l
¡
¡
¡
[P15] <Display 1> <Display 2>
¡
¡
l
¡
¡
¡
[P19] <Display 1> <Display 2>
¡
¡
l
¡
¡
¡
(Item without special mention Indicates part of outdoor unit.)
[Power supply error (Voltage error)]
¡
Is there no open phase
l
of the power supply?
l
NO
¥
Is there no down or up
l
of power supply voltage?
¥
(AC342 to 457V)
NO
[Heat sink overheat error]
¡
Is there no loosening of
l
screws of motor drive element of
l
outdoor P.C. board (MCC-1596) Q201?
Did not forget to apply radiation grease
¥
to rear side of Q201?
¥
¥
Is not the ventilation flue
of the heat sink blocked?
Is not the fan blocked?
(Short-circuit, etc.)
[Gas leak detection]
¡
Is there no gas leak?
l
Is refrigerant charge amount adequate?
¥
¥
¥ Is PMV normal?
¥
Is valve fully opened?
Is there no crushed pipe?
Check temp. sensor.
TD sensor CN603, TS sensor CN600
[4-way valve inverse error]
¡
Is operation of
¥
4-way valve normal?
l
(Check pipe temp., etc. in
cooling/heating operation.)
l
¥
¥
Is power supplied
to 4-way valve coil?
YES
Check operation of
outdoor I/F (CDB) P.C. board.
Check and troubleshooting
YES
YES
NO
YES
YES
YES
YES
NO
OK
YES
NO
NO
Error
OK
– 77 –
Correct wiring.
Confirm electric construction, etc.
Check outdoor P.C. board (MCC-1600).
Defect → Replace
YES Apply radiation grease
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
TS sensor CN600
Indoor TC sensor
Defect → Correct and repair
Replace coil of 4-way valve.
Check outdoor P.C. board.
Defect → replace
Check 4-way valve.
Defect → Replace