Vanner SRC12-1200L Owner's Manual - Owner'S Manual - D913482
Owner's Manual - D913482
SRC12-1200L/S INVERTER/CHARGER
10/31/08 - 10:20 AM
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I N C O R P O R A T E D
AC input voltage is monitored for proper tolerance at all times. When the AC input is within tolerance for
approximately 5 seconds, the power is passed through to the output circuit and the SRC12-1200L/S
automatically switches from inverter mode to battery charger mode. The unit automatically switches back to
inverter mode when input power is disconnected or when input power is no longer within tolerance. See
specifications page for AC input voltage tolerances. The 5 second delay occurs only if the inverter is fully
ON when input power becomes available. There is no 5 second time delay if the inverter is in the ‘Load
Demand Mode’ when input power becomes available.
The factor that determines whether the unit is in ‘inverter mode’ or ‘battery charger mode’ is the presence or
absence of ‘in-tolerance’ input power. Whenever ‘in-tolerance’ input power becomes available the unit
automatically switches from inverter mode to charger mode.
The transfer switch switches both AC hot and AC neutral. For safety purposes the inverter output neutral is
connected to the inverter chassis ground only when the unit is in inverter mode. This is a requirement of the
National Electric Code for all systems of this type that neutral should be connected to ground only at the
source of AC power, which is the inverter when in inverter mode. When an external AC input (shore power,
generator) is available, the SRC12-1200L/S transfer switch system breaks the connection between neutral
and inverter chassis ground. The neutral-to-ground connection for passthrough power is then provided by
the AC input source.
11 PREVENTIVE MAINTENANCE
There are no user serviceable components inside the inverter. For service refer to the Vanner Incorporated
Service Department or other qualified service personnel.
11.1 MAINTENANCE ITEMS
For continued reliability and safety, a monthly maintenance program should be implemented to include the
following:
1. Check to insure that all DC and AC wiring connections are secured and corrosion free.
2. Check air ventilation openings for dust and other obstructions
3. Examine receptacle, indicators and switches for cracks and breaks.
4. Examine for any surfaces that are discolored or deformed due to excessive heat.
11.2 TROUBLESHOOTING 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 Incorporated Service Center or the
Vanner Incorporated Customer Service department: 1-800-AC-POWER (1-800-227-6937). Please have
your model and serial number available when consulting customer service.
ALWAYS CHECK THE FOLLOWING FIRST:
DC Fuse condition
AC output and input breakers
Check all GFCI breakers as equipped throughout AC system
Unit On/Off and Remote On/Off switch positions
Check battery connections for tightness or corrosion
Check battery voltage at battery and inverter
Symptom
ON Light does not light steadily after pushing in the ON/OFF/RESET Switch.
Solution
Light flashes two blinks per second in Load Demand Stand-by mode.
Light flashes one blink per second when utility power is present.