Installation
IQ SERIES OWNERS MANUAL
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START
Press the switch to the START position to initiate acceptance of AC input for
charger/transfer switch function and to start charger operation This is necessary when
the inverter is in Standard Mode but not necessary when in Ambulance Mode.
2.3 (3) BATTERY LOW Indicator Light
Light Action
Description
Solid Red
Inverter is On and battery voltage has decayed to 11 or 22 volts DC warning imminent
inverter shutdown unless battery voltage is increased by charging.
Blinking Red
Battery has decayed to 10.5 or 21.0 volts DC causing inverter shutdown. Battery must be
recharged. Then, Inverter On/Off switch must be reset to activate.
2.4 (4) OVER TEMPERATURE Indicator Light
Light Action
Description
Solid Red
Inverter or Charger has shutdown due to over temperature. Shutdown may be caused by
high ambient temperature or restricted cooling airflow to the inverter. Shutdown sensor
will automatically reset when the unit has cooled.
2.5 (5) OVERLOAD Indicator Light
Light Action
Description
Solid Red
The inverter is ON and the inverter’s AC output circuitry is sensing an overload condition.
If the AC load is not reduced the inverter will shut itself OFF.
Blinking Red
The inverter is Off. An overload has occurred and the inverter has shut off to protect
itself. Once shut off, the inverter On/Off switch must be cycled to reset the unit.
2.6 (6) BULK CHARGE Indicator Light
IQC Models
The Bulk Charge indicator light is present on all models but is functional only on IQC Models.
(See ‘Battery Charger Theory of Operation’ for battery charging performance details.)
Light Action
Description
Blinking Yellow
The unit is in Charger Mode (shore power is ON) and the charger is in either the
BULK STAGE or ABSORPTION STAGE of the battery charging cycle.
Solid Yellow
The unit is in Charger Mode (shore power is ON) and the charger is in the
EQUALIZATION CYCLE.