Fault Protection and Troubleshooting Guide

90548011 VEC054D INVERTER.qxp 3/6/09 10:41 AM Page 11

INVERTER POWER SWITCH TURNED ON

Trouble/Indication

Possible Cause

Suggested Remedy

No AC output —	DC input is below 10 volts	Recharge or replace battery.
red LED lit
	Excessive appliance load	Turn unit OFF. Reduce the load, wait for the
	— thermal shutdown	inverter to cool down, then turn the unit ON
		again.
No AC output —	Fuse(s) open	Check DC input — fuse(s) in vehicle. Replace
green LED not lit		the fuse with one of the same type and
		rating if necessary.
Low battery alarm	Low battery voltage	Recharge battery. Remove load from the
sounds continuously		inverter while recharging battery.
	Bad connection or wiring	Tighten all DC connections.
Motorized power tool	Excessive start-up load	If appliance does not start, appliance is
will not start		drawing excessive current and will not work
		with inverter.
Motorized power tool	Purely inductive load	Make the load not purely inductive. Operate
does not operate at		an incandescent lamp at the same time as
correct speed		motor.
Television/radio	Snow in picture,	Keep inverter and antenna distant from each
interference	“buzzing” sound	other. Use shielded antenna. Connect antenna
		to amplifier.

Resetting the Unit

When a thermal shutdown problem occurs, the inverter will reset and turn back on automatically after it cools.

WARNING: To reduce the risk of injury or property damage: If the appliance stops working, even momentarily, turn off the appliance and disconnect from the inverter until the cause is identified and corrected.

CARE AND MAINTENANCE

Storage

1.Ideal storage temperature range is 50-68°F (10-20°C).

2.Store and use the inverter in a cool, dry place with adequate ventilation.

3.Avoid locations that are exposed to heating units, radiators, direct sunlight or excessive humidity or dampness.

Fuse Replacement

This inverter is equipped with multiple internal fuses. Normally, these fuses will not “blow” unless there is a serious problem inside the unit. Internal fuses are replaceable; however, only trained personnel should attempt fuse replacement. Refer to the “Service Information” section of this Instruction Manual.

Preventive Maintenance

Inverters require minimal maintenance. For optimum performance, the manufacturer recommends periodically performing the following preventive maintenance.

1.Turn OFF the inverter using the front panel ON/OFF Power Switch.

2.Remove the DC power fuse.

3.Check and tighten all electrical connections, including the ground.

4.Using a non-metallic vacuum cleaner hose, vacuum the air slots and fan area.

5.Clean the outside of the unit using a damp (not wet) cloth.

6.Wipe unit surfaces thoroughly with a dry cloth.

7.Re-insert the fuse and resume operation.