Group Four Transducers
22 Deer Park Drive,
E. Longmeadow, MA 01028
www.groupfourtransducers.com
Phone : (800) 419 1444
Fax : (413) 525 -6182
sales@group-4.com
Rev 0
21
Troubleshooting
Problem
Error Code
Possible Causes
Suggested Solution
Charger Does Not Work No Indicator lights on
No AC Power
Check AC connections
and make sure Power
Point is switched ON
No DC Output
4 LEDs Indicator
flashing simultaneously
Output is short circuited
Reverse polarity
connection to Battery
Check DC connection
between charger and
battery and make sure
they are not short
circuiting.
Check the batteries are
installed in correct
polarity.
Check the battery
voltage.
No Charging Current
4 LEDs indictor light
off
Battery no voltage
Battery is defective
Move battery
How to Use
1. Plug in charger to AC socket, all the lamp will be blinking sequen
LED ON.
2.
Please Disconnect and Check.
3. Depending
connected to battery left indefinitely.
Warning
1. This charger is designed for charge Lithium ion battery pack, do not use for any other purpose.
2. Since batteries may emit explosive gases, always provide good ventilation and avoid any
source of flames or sparks when charging.
3. To reduce risk of damage to electric plug and cord, pull by the plug rather than by the cord
when disconnecting charger.
4. Use of an improper extension cord could result in a risk of fire and electric shock.
5. Do not disassemble the charger; take it to a qualified serviceman when service of repair is
required. Incorrect reassembly may result in a risk of electrical shock or fire.
6. Do not charge if you notice any signs of damage to charger or cords.
7. To reduce risk of electric shock, unplug charger from AC outlet before attempting any
maintenance or cleaning.
