VANNER
Incorporated
VLT Series True Sine Wave Inverter - Owner’s Manual
15
6. PREVENTATIVE MAINTENANCE and TROUBLESHOOTING
PROCEDURES
There are no user serviceable components inside the inverter. If the inverter requires service, refer to
Vanner Incorporated or other qualified service personnel.
Preventive Maintenance
For continued reliability and safety, a monthly maintenance program should be implemented to include the
following:
1. Check to insure that all wiring connections are tight, secure and corrosion free.
2. Check fan intake and exhaust vents for obstructions.
3. Examine receptacle, indicators and switches for cracks and breaks.
4. Examine any surfaces that are discolored or deformed due to excessive heat.
Trouble Shooting Procedures
The following are the most common questions heard by Vanner service professionals. If your situation does
not apply to the following categories, please contact your local Vanner Power Group Service Center or the
Vanner Power Group Customer Service Department: 1-800-AC-POWER (1-800-227-6937). Please have your
model and serial number available when consulting customer service.
Preliminary Checks
1. Indicator Light status
2. Inverter ON/OFF Switch and Remote ON/OFF Switch positions
3. Check all GFCI receptacles and circuit breakers as equipped throughout AC system
4. Battery voltage at battery and battery voltage at the inverter. Voltage present at inverter does not
prove that all connections are sound especially under no AC load. (see item 7)
5. DC Fuse condition
6. Battery connections for tightness or corrosion
7. Try operating an AC load from the GFCI receptacle located on inverter front panel
