Toshiba Carrier RAV-SP180AT2-UL Service Manual page 68

CODE Outdoor
No. LED display
[P07] <Display 1> <Display 2>
[P15] <Display 1> <Display 2>
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Heat sink overheat error]
Is there no loosening of
screws of motor drive element of
outdoor P.C. board Q200, Q300, Q400
and rectifier DB01, DB02, DB03?
Did not forget to apply
radiation grease to rear side of
Q200, DB01, DB02 or DB03?
NO
Is not the ventilation flue
of the heat sink blocked?
Is not the fan blocked?
(Short-circuit, etc.)
YES
Check outdoor P.C. board.
Defect → Replace
[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
Check outdoor P.C. board.
Defect → Replace
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YES
Apply radiation grease to objective part.
Retightening of screws.
(Be sure not to forget to attach insulating sheet
between heat sink and Q300, Q400.)
NO
Remove blocking matter.
Correct short-circuit.
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