Cobra Electronics PI2000 Troubleshooting Guide, Maintenance, Trouble- shooting Guide, Solution

Troubleshooting Guide Maintenance

Trouble- shooting Guide

Problem /Symptom	Possible Causes	Solution
Low output voltage	Using average	Use true RMS
on voltmeter	reading	meter reading
(96 VAC to 104 VAC)
Low output voltage	Overload	Reduce the
and current indicator		load
in red zone
No output voltage	Low input	Recharge
and voltage	voltage	battery,
indicator in		check
lower red zone		connections
		and cable
No output voltage,	Inverter switched	Turn inverter
no voltage	Off, no power to	on, check
indication	inverter,	wiring to
	fuse open	inverter.
		Have qualified
		service
		technician
		check and
		replace
	Reverse DC	Observe
	polarity	correct
		polarity
No output voltage	High input voltage	Make sure the
voltage indicator in		inverter is
upper red zone		connected to
		12 V battery,
		check regulation
		of charging
		system.

Problem /Symptom	Possible Causes	Solution
Low battery alarm on	Poor DC wiring,	Use proper cable
all the time,	poor battery	make solid
voltage Indicator	condition	connections,
below 11 V		use new battery
No output voltage	Thermal shutdown	Allow inverter to
if load in excess of		cool off
2000W or 17.4 amperes		Reduce load, con-
		tinuous operation
		input current
		required
		Improve ventila-
		tion; make sure
		ventilation open-
		ings in the inverter
		aren’t obstructed.
		Reduce ambient
		temperature
No output voltage	Short circuit	Check AC
	or wiring	wiring for
	error	short circuit or
		improper
		polarity
Maintenance		Maintenance

Very little maintenance is required to keep the invert- er operating properly. The exterior of the unit should be cleaned periodically with a damp cloth to prevent accumulation of dust and dirt. At the same time, tighten the screws on the DC input terminals. Be sure vents and fans are free of dust or debris.

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