Toshiba RAV-SM2804AT8-E, RAV-SM2804AT8ZG-E, RAV-SM2244AT8ZG-E, RAV-SM2804AT8Z-E, RAV-SM2244AT7ZG 71

Check	Outdoor					Check and troubleshooting
code	LED display				(Item without special mention Indicates part of outdoor unit.)
[H02]	<Display 1>	<Display 2>	[Compressor lock]
	¡	¡		Is power supply voltage normal?			NO
	¡	l						Correct power supply line.
					AC342 to 457V
	l	l
					YES
	¡	l
	l	¥			Is wire connection normal?		NO
								Check wire connection
	l	l			Compressor lead
					(Board side, Compressor side),			and correct it.
				Reactor lead, Power supply lead
					YES		YES
					Is compressor normal?			Check outdoor P.C. board.
								Defect →	Replace
					NO		NO
			Is there no refrigerant stagnation?					Compressor lock → Replace
					YES		NO
					Does PMV normally operate?			Check TE, TS sensors and PMV.
								Defect →	Replace
					YES
							Check outdoor P.C. board (MCC-1596).
								Defect → Replace
[H03]	<Display 1>	<Display 2> [Current detection circuit error]
	¡	¡
	¡	l
	l	l			Check outdoor P.C. board (MCC-1596).
	¡	l			Defect →	Replace

l¥

l¥

<Display 1> <Display 2> [Power supply error (Vdc)] → Refer to [P05] column.

¡ ¡

¡l

l l

¡¥

¡l

¡¥

[H04] <Display 1> <Display 2> [Case thermostat operation]

¡	¡		NO
¡	l	Are CN609 connection		Correct connector.
l	l	and case thermostat normal?		Case thermostat error → Replace
		YES
¡	¥		NO
l	l	Is cooling/heating operation available		Check outdoor P.C. board (MCC-1599).
l	l	when short-circuiting case thermostat?		Defect → Replace
		YES
			NO
		Is there no gas leak?		Repair defectives position.
		Is it not refrigerant shortage?		Recharge refrigerant.
		YES	NO
		Is valve fully opened?
				Open valve fully.
		YES	NO
		Is PMV normal?		Correct defective position.
				Replace defective part.
		YES
				Check crushed or broken pipe.
				Defect → Correct and Replace

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