Samsung Airconditioner error codes

Error Code	Description	Solution
E1	Indoor Temperature Sensor Error	Check and replace the indoor temperature sensor if faulty.
E2	Outdoor Temperature Sensor Error	Inspect the outdoor temperature sensor and replace if necessary.
E3	Compressor Overload Protection	Ensure the compressor is not overheating; check airflow and clean filters.
E4	Communication Error Between Indoor and Outdoor Units	Check wiring connections between the units; repair any loose connections.
E5	Refrigerant Leakage Detection	Inspect for refrigerant leaks and repair any found; recharge if necessary.
E6	High Pressure Protection	Check for blockages in the refrigerant lines and clear any obstructions.
E7	Low Pressure Protection	Ensure proper refrigerant levels; check for leaks and recharge if needed.
E8	Fan Motor Error	Inspect the fan motor for proper operation; replace if faulty.
F0	Overcurrent Protection	Check the electrical supply for irregularities; ensure no excessive current is being drawn.
F1	Drainage Error	Inspect the drainage system for blockages and clear any obstructions.

error codes pdf

LED Status Table with Solutions

Yellow LED	Green LED	Red LED	Display	Meaning	Solutions
off	off	off	blank	power off	Check power supply
on	on	on	blank	power on reset	Perform system reset
off	flashes	on	blank	normal operation	No action needed
off	off	on	blank	Communication Error	Check communication connections
off	on	on	blank	Communication Error	Check communication connections
off	off	flashes	E464	IPM over current	Inspect current load
off	flashes	on	E461	Compressor starting error	Check compressor functionality
off	on	off	E470	EPROM data error	Reset or replace EPROM
off	on	flash	E466	DC link over or under voltage	Check voltage levels
off	on	flash	E484	PFC over load error	Reduce load on PFC
off	on	flash	E483	over voltage protection	Check voltage input
flashes	off	flashes	E221	outdoor temperature sensor error	Check outdoor sensor connections
flash	off	on	E416	over discharge temperature	Inspect temperature sensor
flash	flash	off	E251	discharge temp sensor error	Check discharge temperature sensor
flash	flash	on	E468	current sensor error	Inspect current sensor
flash	flash	on	E474	heat sink error	Check heat sink and fan
flash	flash	on	E485	input current sensor error	Inspect input current sensor
flash	on	off	E465	compressor V limit error	Check compressor voltage
flash	on	off	E500	heat sink over temperature error	Check cooling system
flash	on	on	E203	time out main micom and inv micom pcb	Restart system
on	off	off	E458	fan motor error	Check fan motor
on	off	flash	E471	EPROM data error main micom to inv micom	Reset or replace EPROM
on	off	on	E467	compressor wiring error	Inspect compressor wiring
on	flash	off	E440	heating prohibit error	Check heating system
on	flash	off	E441	cooling prohibit error	Check cooling system
on	flash	flash	E469	DC link voltage sensor error	Inspect voltage sensor
on	flash	flash	E488	AC input voltage sensor error	Check AC input voltage
on	flash	on	E462	AC input limit trip error	Reduce AC input
on	on	off	E554	Gas leakage error	Check for gas leaks
on

LED Status	Display	Meaning	Solutions
Yellow LED – on Green LED – on Red LED – off	E422	Electronic expansion valve error	Check electronic expansion valve for faults.
Yellow LED – flash Green LED – off Red LED – on	E463	OLP overheating error	Inspect OLP for overheating issues.
Yellow LED – off Green LED – flash Red LED – flash	Blank	Test operation cooling mode	Verify cooling system functionality.
Yellow LED – flash Green LED – flash Red LED – flash	Blank	Test operation heating mode	Verify heating system functionality.