Sanyo AHX0952, UHX2452, UHX0752, UHX1252, UHX3652, UHX1852, THX2452, THX1252, THX1852, XHX1852 P02

Test Run

6. Meaning of Alarm Messages

Possible cause of malfunction			Alarm
			Message
Activation of	Protective device in outdoor unit	Compressor therminal protector is activated.
protective	is activated.	Power supply voltage is unusual. (The voltage is more than 260 V or less	P02
device		than 160 V between L1 and L2 phase.)
		Incorrect discharge temperature. (Comp. No. 1)	P03
		High pressure switch is activated.	P04
		Negtive (defective) phase.	P05
		Compressor running failure resulting from missing phase in the	P16
		compressor wiring, etc. (Start failure not caused by IPM or no gas.)
		Incorrect discharge temperature. (Comp. No. 2)	P17
		Compressor 3 discharge temp. failure	P18
		Outdoor unit fan motor is unusual.	P22
		Overcurrent at time of compressor runs more than 80Hz (DCCT
		secondary current or ACCT primary current is detected at a time other	P26
		than when IPM has tripped.)
		IPM trip (IPM current or temperature)	H31
		Inverter for compressor is unusual. (DC compressor does not operate.)	P29
Thermistor fault	Indoor thermistor is either open	Indoor coil temp. sensor (E1)	<<F01>>
	or damaged.
		Indoor coil temp. sensor (E2)	<<F02>>
		Indoor coil temp. sensor (E3)	<<F03>>
		Indoor suction air (room) temp. sensor (TA)	<<F10>>
		Indoor discharge air temp. sensor (BL)	<<F11>>
	Outdoor thermistor is either	Comp. No. 1 discharge gas temp. sensor (DISCH1)	F04
	open or damaged.
		Comp. No. 2 discharge gas temp. sensor (DISCH2)	F05
		Outdoor No. 1 coil gas temp. sensor (EXG1)	F06
		Outdoor No. 1 coil liquid temp. sensor (EXL1)	F07
		Outdoor air temp. sensor (AIR TEMP)	F08
		Compressor intake port temperature sensor (RDT)	F12
		High pressure sensor. Negative (defective) N phase.	F16
		Low-pressure sensor failure	F17
		Compressor 3 discharge temp. sensor failure (DISCH3)	F22
		Outdoor No. 2 coil gas temp. sensor (EXG2)	F23
		Outdoor No. 2 coil liquid temp. sensor (EXL2)	F24
EEP ROM on indoor unit PCB failure			F29
Protective	Protective device for	EEP ROM on the main or sub outdoor unit PCB has failed.	F31
device for	compressor No.1 is activated.
		Current is not detected when comp. No. 1 is ON.	H03
compressor is
activated		Discharge gas temperature of the comp. No. 1 is not detected.	H05
		Temp. sensor is not seated at the sensor holder.
	Protective device for	Overload current is detected.	H11
	compressor No.2 is activated
		Lock current is detected.	H12
		Current is not detected when comp. No.2 is ON.	H13
		Discharge gas temperture of comp. No.2 is not detected.	H15
	Protective device for	Compressor No.3 current trouble (overcurrent)	H21
	compressor No.3 is activated.
		Compressor No.3 current trouble (locked)	H22
		Compressor No.3 CT sensor disconnected or short circuit	H23
		Compressor No.3 discharge temp. sensor disconnected	H25
		Low pressure switch is activated.	H06
	Low oil level.		H07
	Oil sensor fault.	Comp. No.1 oil sensor	H08
	(Disconnection, etc.)
		Comp. No.2 oil sensor	H27
		Oil sensor (connection) failure	H28

Continued

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