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
¡
¡
¡
AMP Air Conditioning
(Item without special mention Indicates part of outdoor unit.)
[Power supply error (Voltage error)]
¡
l Is there no open phase
of the power supply?
l
NO
¥
l
Is there no down or up
of power supply voltage?
¥
(AC342 to 457V)
NO
[Heat sink overheat error]
¡
l
Is there no loosening of
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?
¥
NO
¥
Is not the ventilation flue
of the heat sink blocked?
Is not the fan blocked?
(Short-circuit, etc.)
YES
[Gas leak detection]
¡
l
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?
l
(Check pipe temp., etc. in
l cooling/heating operation.)
¥
NO
¥
Is power supplied
to 4-way valve coil?
YES
Check operation of
outdoor I/F (CDB) P.C. board.
OK
Check and troubleshooting
YES
YES
Check outdoor P.C. board (MCC-1600).
YES
NO
Check outdoor P.C. board (MCC-1596).
NO
NO
NO
YES
Error
Check outdoor P.C. board (MCC-1599).
YES
NO
Error
– 77 –
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Correct wiring.
Confirm electric construction, etc.
Defect → Replace
Apply radiation grease
to objective part.
Retightening of screws.
Remove blocking matter.
Correct short-circuit.
Defect → Replace
Repair defective position.
Recharge refrigerant.
Correct defective position.
Replace defective part.
Open valve fully.
Correct and replace piping.
Correct connector.
Sensor error → Replace
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