Xantrex Technology XFR 2800 manual Symptom Check Further Checks and Corrections

Local Operation

User Diagnostics

Table 3.4 User Diagnostics

Symptom	Check	Further Checks and Corrections
No output and the	Is input voltage within specified	Connect to appropriate voltage source.
display is blank.	range?	See page 40.
	Power switch ON?	Turn on power.
	Internal circuit?	See your service technician.
No output but the	OVP LED turned on?	See page 61.
display turns on.
	Front panel S/D LED turned on?	See page 63.
	OTP LED turned on?	See page 70.
	Current limit set to zero?	See page 57.
	Voltage control set to zero?	See page 57.
	REM LED turned on?	If using remote analog control, check
		your analog programming source
		(Section 4). If not, refer to your digital
		interface manual.
	Is front panel ACF LED turned on?	Connect unit to AC supply in specified
		range. See page 40.
	Internal circuit.	See your service technician.
Output not adjustable.	Is unit in current limit mode?	Turn current knob clockwise to increase
	(Red Current Mode LED turned on.)	current limit. Reduce load if current is at
		maximum. See page 57.

Is unit in remote mode? (Green REM LED turned on.)

If using remote analog control, check your analog programming source (Section 4). If not, refer to your digital interface manual.

	Is unit at maximum voltage or current	Reduce load for lower voltage or current
	limit?	requirement.
Output voltage	Is unit at current limit?	Increase current limit setting or reduce
fluctuating or regulation		load. See page 57.
poor.
	Is input voltage within specified	Connect to appropriate AC voltage
	range?	source.
		See page 40.
	Are sense lines connected?	See page 45 and page 53.
	Is unit under remote analog control? Ensure that program source is stable.
	Internal circuit.	See your service technician.
Output oscillating.	Internal circuit.	See your service technician.

72 Operating Manual for XFR 2.8kW Series Power Supply