Samsung MH026FNCA service manual 3-1-2Outdoor Unit, Samsung Electronics

		Alignment and Adjustments
3-1-2 Outdoor Unit
Display	EXPLANATION(The error indicated on the PCB display of outdoor unit)	REMARK
	Communication error(indoor unable to receive data)	Check electrical connection
		and setting
	Outdoor unit communication error	Check electrical connection
	(Abnormal data from indoor unit over 60 packet)	and setting
	Indoor unit room temperature sensor error (Open/Short)
	Indoor unit heat exchanger in temperature sensor error (Open/Short)
	Indoor unit heat exchanger out temperature sensor error (Open/Short)
	Indoor unit sensor error-Evaporator pipe in sensor - Self diagnosis
	Indoor unit sensor error-Evaporator pipe out sensor - Self diagnosis
	Indoor Unit FAN Error
	More than two indoor units cool and heat simultaneously
	Indoor Unit EEPROM Error
	Indoor Unit EEPROM Option Error
	Failure of pipe check operation	Check electrical connection
		and setting
	No pipe check operation check	Check setting
	- occasion : try to operation after the installation through auto addressing
	mode without pipe check operation.
	The number of Indoor unit mismatched	Check electrical connection
		and setting
	Communication error between the outdoor and indoor unit	Check electrical connection
		and setting
	Outdoor communication error between main PCB and sub PCB
	Outside temperature sensor error(Short/Open)
	- Error level: over 4.9V(-50˚C) under 0.4V(93˚C)
	Condenser temperature sensor error(Short/Open)
	- Error level: over 4.9V(-50˚C) under 0.4V(93˚C)
	Outdoor unit sensor error - Condenser out sensor(Short/Open) - Self diagnosis
	Compressor Discharge temperature sensor error
	Compressor discharge sensor detached - Self diagnosis
	Compressor OLP sensor error (Short/Open)
	- Error condition : outdoor temperature under -20˚C
	- Error level : over 4.95V(-30˚C) under 0.5V(151˚C)

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