Sanyo TH2672R / CH2672R, XH4272R / C4272R, UH2672R, XH2672R, UH3672R / CH3672R Remote Alarm, Eeprom

4. Service procedures

Remote	Alarm
controller		Judgment condition	Clear condition	Judgment and correction
	contents
alarm display
F31	EEPROM trouble	Reading/writing failure	Recovery at power	1. Check EEPROM (IC007).
			reset	2. Check outdoor unit control
				PCB.
L02	Mismatch of indoor	Indoor unit judges that type	Recovery at power	1. Check indoor unit EEPROM.
	and outdoor unit types	does not match outdoor unit	reset	2. Check indoor unit control
	(Espacio, Multi )	type.		PCB.
L04	Settings failure	Duplicated outdoor unit	Automatic recovery	1. Check outdoor unit
		address (system address)		system address.
				2. Check inter-unit control
				wiring.
L07	Settings failure	Group control wiring is	Recovery at power	1. Check inter-unit control
		connected to an	reset	wiring.
		independent-control indoor		2. Check indoor unit
				EEPROM.
L10	Settings failure	Outdoor unit capacity not set.	Recovery at power	Check outdoor unit EEPROM.
			reset
L13	Indoor-outdoor unit	Outdoor unit judges that type	Recovery at power	1. Check indoor unit
	types	does not match indoor unit	reset	EEPROM.
		type.		2. Check outdoor unit control
				PCB.
E06	Outdoor unit detected	Serial signal receiving failure	Automatic	1. Check inter-unit control
	abnormal signal from	(including failure to verify No.	recovery	wiring.
	indoor unit.	of units)		2. Check outdoor unit
E07	Outdoor unit sending	Serial signal sending failure	Automatic	1. Check inter-unit control
	failure to indoor unit		recovery	wiring.
				2. Check outdoor unit control
				PCB.
E14	Settings failure	Duplicated master unit in	Recovery at power	1. Check inter-unit control
		simultaneous-operation multi	reset	wiring.
		control		2. Check indoor unit
		(Detected by outdoor unit)		combination.
E15	Automatic address	Indoor unit capacity too low.	Recovery at power	1. Check inter-unit control
	setting failure		reset	wiring.
				2. Check outdoor unit control
				PCB.
E16	Automatic address	Indoor unit capacity too high.	Recovery at power	1. Check inter-unit control
	setting failure		reset	wiring.
				2. Check outdoor unit control
				PCB.
E20	Automatic address	Outdoor unit cannot receive	Recovery at power	1. Check inter-unit control
	setting failure	any serial signals from indoor	reset	wiring.
		units.		2. Check outdoor unit control
				PCB.
E31	Communications	No communication possible	Automatic recovery	Check outdoor unit control
	trouble within unit	with MDC for 3 minutes or		PCB.
		longer.
H01	Overcurrent	Inverter stops after alarm is	Recovery at restart	1. Refrigerant cycle trouble,
		detected.		overload operation
				2. Loose screws between HIC
				control PCB and radiating
				plate
				3. Cooling failure of radiating
				plate
				4. Check outdoor unit PCB
				wiring.

SM831148

IV-7

4