Owners Manual

16 © 2017 Sensata Technologies
Ope ra t ion
3 .2 Underst anding Loa ds
This section covers how the CSW2024 inverter handles various connected AC
loads (and no loads—per the Load Sense function). The CSW2024 inverter
can power most connected loads within its power rating, however there are
special conditions that can cause a load to behave differently than expected.
3 .2 .1 Set t ing t he Load Sense Funct ion
This Load Sense feature allows you to reduce the current draw when no AC
load is connected to the inverter. This feature reduces power consumption in
order to conserve power drawn from the batteries.
When Load Sense is disabled, the inverter provides 120V output at all times.
When Load Sense is enabled, the inverter’s AC output switches ON every few
seconds to detect any connected AC load. If a connected load is >10W, the
AC output remains ON continuously until the AC load is reduced to <3W. At
this point, the CSW2024 resumes its normal ON/OFF function until it senses
a connected AC load of >10W again.
Upon powering up the CSW2024 inverter, the digital display briefl y shows
either “LS0” (Load Sense disabled, default setting) or “LS1” (Load Sense
enabled) to indicate the current Load Sense setting.
To e nable/ disable t he Load Sense function:
1. Press and hold the Power/Select button for 5 seconds to enter Load
Sense select mode. Display shows the current setting (“LS0” or “LS1”).
2. Press the Power/Select button once to change the current setting. The
unit will automatically exit the select mode after 5 seconds.
3 .2 .2 Addre ssing Loa d I ssue s
Following are some common problems encountered when using this inverter.
USB loads: When using the USB connector, be sure that the device you will
be connecting will accept 5 volts (≤2.1 A) and can be charged or powered
using another power source. The USB port can safely power and charge a lot
of devices such as: MP3 players, mobile phones, and portable video game
players. However, some devices such as GPS receivers and some cameras
may not work and may even be damaged. Refer to the owner’s guide for
each device to determine its compatibility.
Mot or loa ds n ot st a r t ing: Some appliances, particularly those with
induction motors, require a much higher start-up surge than they do when
running. Pumps, freezers and refrigerators (compressors) are the most
common. The inverter may not be able to start some of these appliances
even though their rated current draw is within the inverter’s limits. If a
motor-operated appliance refuses to start, observe the VOLTS indicator on
the digital display while you are trying to start the appliance. If the display
shows a battery drop below 22 volts while the inverter is trying to start the
motor, this may explain why the appliance won’t run. Make sure the length
and diameter of the battery cables are appropriate. Check that the battery
connections are good and that the battery is fully charged. If the cables are
sized correctly, the connections are good, and the battery is charged, you
may need a larger battery bank (see ‘Loads turning on and off’ below).
Loads t urning off and on: If a load starts but quickly turns off, then the
battery may not be able to deliver the necessary amperage to drive the load.
If the battery bank cannot deliver the necessary amperage to drive a heavy
load, the inverter will shut OFF due to low voltage (≤21.0 VDC). The battery