Toshiba RAV-GP1101AT8-E Service Manual page 65

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>
(Item without special mention Indicates part of outdoor unit.)
[Power supply trouble (Voltage trouble)]
Is there open phase
of the power supply?
NO
Is power supply
voltage normal?
(AC342 to 457V)
YES
[Heat sink overheat trouble]
Are radiation grease properly applied?
Are the screws of the motor drive element
Q201 on the outdoor P.C. board (MCC-1596),
the rear side of Q201 correctly?
YES
Does something block the
ventilation around the heat sink?
Does something block air flow from the fan?
(Short-circuit, etc.)
YES
[Gas leak detection]
Is there gas leak?
Is there refrigerant shortage?
NO
Is PMV normal?
YES
Is valve fully opened?
YES
Is there crushed pipe?
YES
Check temp. sensor.
TD sensor CN603, TS sensor CN600
OK
[4-way valve inverse trouble]
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
– 65 –
Check and troubleshooting
YES
NO
Confirm electric construction, etc.
Replace outdoor P.C. board (MCC-1600).
NO
NO
Replace outdoor P.C. board (MCC-1596).
YES
NO
NO
NO
Abnormality
Replace outdoor P.C. board (MCC-1599).
YES
NO
Abnormality
Correct wiring.
Apply radiation grease
to objective part.
Retightening of screws.
Remove blocking matter.
Correct short-circuit.
Repair trouble position.
Recharge refrigerant.
Replace PMV.
Open valve fully.
Correct and replace piping.
Correct connector.
Sensor trouble → Replace
Temperature sensor check
TE sensor CN601
TS sensor CN600
Indoor TC sensor
Trouble → Correct and repair
Replace coil of 4-way valve.
Replace outdoor P.C. board.
Replace 4-way valve.