Toshiba CONCEALED DUCK TYPE, CEILING TYPE service manual 45, Lamp indication, Check code

Lamp indication			Check code	Cause of trouble occurrence
Operation	Timer	Ready	F01	Heat exchanger sensor (TCJ) error			⎫
			F02	Heat exchanger sensor (TC) error			⎪	Indoor unit sensor error
							⎬
Alternate flash			F10	Heat exchanger sensor (TA) error			⎪
							⎭
			F04	Discharge temp. sensor (TD) error			⎫
							⎪
			F06	Temp. sensor (TE) error			⎪
							⎪
Operation	Timer	Ready	F07	Temp. sensor (TL) error			⎪
							⎪
			F08	Temp. sensor (TO) error			⎪	Sensor error of outdoor unit ∗1
							⎬
							⎪
Alternate flash			F12	Temp. sensor (TS) error			⎪
							⎪
			F13	Temp. sensor (TH) error			⎪
							⎪
			F15	Temp. Sensor miswiring (TE, TS)			⎪
							⎭
Operation	Timer	Ready
			F29	Indoor EEPROM error
Simultaneous flash
Operation	Timer	Ready
			F31	Outdoor EEPROM error
Simultaneous flash
			H01	Compressor break down	⎫
Operation	Timer	Ready	H02	Compressor lock	⎪
					⎪	Outdoor compressor system error ∗1
			H03	Current detection circuit error	⎬
					⎪
					⎪
	Flash		H04	Case thermostat worked.	⎭
			H06	Outdoor unit low pressure system error
			L03	Duplicated header indoor units			⎫
							⎪
Operation	Timer	Ready	L07	There is indoor unit of group connection ⎬⎪ → AUTO address
				in individual indoor unit.			⎪	∗ If group construction and
				Unsetting of group address			⎪	address are not normal
			L08				⎭
								when power supply turned on,
Simultaneous flash				Missed setting				automatically goes to address
			L09					setup mode.
				(Unset indoor capacity)
			L10	Unset model type (Service board)			⎫
							⎪
Operation	Timer	Ready	L20	Duplicated indoor central addresses			⎪⎪
			L29	Outdoor unit and other error			⎪	Others
							⎬
							⎪
Simultaneous flash			L30	Outside interlock error			⎪
							⎪
			L31	Negative phase error			⎪
							⎭
∗1: These are representative examples and the check code differs according to the outdoor unit to be combined.
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