Toshiba RAV-SM2804AT7Z, RAV-SM2804AT8ZG-E Display Display 2 Communication error between MCU

Check	Outdoor		Check and troubleshooting
code	LED display		(Item without special mention Indicates part of outdoor unit.)
[L29]			∗ There is a possibility that it is one of the following errors.
			Confirm LED on outdoor P.C. board to judge which error it is.
			Communication error between MCU, Heat sing temp. sensor (TH) error,
			EEPROM error, Unset model type, Heat sink overheat error, Gas leak detection,
			4-way valve inverse error
	<Display 1>	<Display 2> [Communication error between MCU]
	¡	¡	1. Connection check between CN802 of MCC-1599 and CN504 of MCC-1597
	¡	¥	and also connection check between CN505 of MCC-1597 and CN851 of
			MCC-1596.
	l	¥
			2. Check outdoor P.C. board (MCC-1596, MCC-1597, MCC-1599).
	¡	¥
			Defect → Replace
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	<Display 1>	<Display 2>	[Heat sink temp. sensor (TH) error] → Refer to [F13] column.
	¡	¡
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	<Display 1>	<Display 2>	[EEPROM error] → Refer to [F31] column.

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<Display 1> <Display 2> [Unset model type] → Refer to [L10] column.

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<Display 1> <Display 2> [Heat sink overheat error] → Refer to [P07] column.

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<Display 1> <Display 2> [Gas leak detection] → Refer to [P15] column.

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<Display 1> <Display 2> [4-way valve inverse error] → Refer to [P19] column.

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