Toshiba RAV-SM2244AT8Z-E P07 Display Heat sink overheat error, P15 Display Gas leak detection

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

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