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User’s Manual—Read before using this equipment
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12
inverter where air flows freely around it to allow the heat to disperse. The inverter’s
thermal protection prevents it from operating when its temperature exceeds
130ºF ± 10ºF.
TROUBLESHOOTING
PROBLEM: Low or No Output Voltage – Fault LED Lit
Reason
Solution
Poor contact with battery or inverter
terminals.
Clean terminals thoroughly. Reinstall
and tighten.
PROBLEM: Inverter Automatically Shut Down – Fault LED Lit
Reason
Solution
Battery voltage below
#
3724
— 9.5V
#
3724-4
— 20V
#3724-8
— 40V
Charge or replace battery.
Inverter is too hot.
(Thermal protection mode.)
Allow inverter to cool.
Check for adequate ventilation.
Reduce the load on the inverter to
rated continuous power output.
Unit may be defective.
See warranty and call customer service.
Equipment being operated draws too
much power.
Use a higher capacity inverter or do
not use this equipment.
PROBLEM: Continuous Buzzing Sound
Reason
Solution
Input voltage below
#
3724
— 10.5V
#
3724-4
— 21.0V
#3724-8
— 42.0V
Keep input voltage above:
#
3724
— 10.5V
#
3724-4
— 21.0V
#3724-8
— 42.0V
Poor or weak battery condition.
Recharge or replace battery.
Poor or loose cable connection.
Inspect terminals and tighten all
connections.
Inadequate power being delivered to
the inverter or excessive voltage drop.
Use heavier gauge DC cable.
Keep cable length as short as possible.