A16EM4H4R18

A16EM4H4R18 is the 16 SEER, 18,000 Btu indoor unit for the Air-Con Multi Splits.

Error Codes

Malfunction Name	Dual-8 Nixie tube	Indicator
		Operation Indicator	Cooling Indicator	Heating Indicator
Malfunction of jumper cap	C5	blink 15 times
No feedback from indoor unit's motor	H6	blink 11 times
Circuit malfunction of zero crossing detection	U8	blink 17 times
Indoor ambient temperature sensor is open/short-circuited	F1		blink once
Indoor evaporator temperature sensor is open/short-circuited	F2		blink twice
Liquid valve temperature sensor is open/short-circuited	b5		blink 19 times
Gas valve temperature sensor is open/short-circuited	b7		blink 22 times
Module temperature sensor is open/short-circuited	P7			blink 18 times
Outdoor ambient temperature sensor is open/short-circuited	F3		blink 3 times
Outdoor condenser tube temperature sensor is open/short-circuited	F4		blink 4 times
Outdoor discharge temperature sensor is open/short-circuited	F5		blink 5 times
Communication malfunction in between indoor and outdoor units.	E6	blink 6 times
Malfunction of phase current circuit detection for compressor	U1			blink 12 times
Module temperature protection	P8			blink 19 times
Charging malfunction of capacitor	PU			blink 17 times
High pressure protection of system	E1	blink once
Overload protection of compressor	H3			blink 3 times
Wrong connection for communication wire or malfunction of expansion valve (free match)	dn	/	/	/
Wrong connection for communication wire or malfunction detection status of expansion valve (free match)	dd	/	/	/
Mode shock	E7	blink 7 times
Freon recovery mode	Fo	blink once	blink once
Defrosting and oil return under heating	H1			blink once
Failure start-up of compressor	Lc			blink 11 times
Discharge high-temperature protection of compressor	E4	blink 4 times
Overload protection	E8	blink 8 times
Overcurrent protection of complete unit	E5	blink 5 times
Overcurrent protection of phase current	P5			blink 15 times
Desynchronizing of compressor	H7			blink 7 times
Loss phase/inverse phase protection for compressor	Ld	/	/	/
Module current protection (IPM protection)	H5			blink 5 times
Low voltage protection of DC bus bar	PL			blink 21 times
High voltage protection of DC bus bar	PH		blink 11 times
PFC protection	HC			blink 6 times
Limit/decrease frequency due to current protection of the complete unit	F8		blink 8 times
Limit/decrease frequency due to module current protection (phase current)	En	/	/	/
Limit/decrease frequency due to discharge	F9		blink 9 times
Limit/decrease frequency due to freeze protection	FH		blink 2 times	blink 2 times
Limit/decrease frequency due to overload	F6		blink 6 times
Limit/decrease frequency due to module temperature protection	EU		blink 6 times	blink 6 times
Oil return under cooling	F7		blink 7 times
Cold air prevention protection	E9	blink 9 times
Freeze protection	E2	blink 2 times