Great Planes Triton2 EQ Charger - GPMM3156 User Manual
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ERROR INDICATIONS AND SAFETY WARNINGS
This charger uses solid-state circuitry to protect against potential damage which could be caused by short-circuit or reverse
polarity conditions. If input power is connected backwards the screen might turn black and no other operation will occur, but
the charger will be protected from damage. Re-check all input connections to make sure it is connected properly.
The following warning / error messages will show to protect the charger and battery from damage due to improper
connection, input voltage, etc. These messages will be accompanied by loud tones on the buzzer. When any message
appears, refer to the list of errors below or the Troubleshooting Guide below. Press MENU to clear the warning.
Error Displayed
Problem and Solution
Input voltage
When input voltage is under 11.0V or over 15V.
No battery
When a battery is not detected at the charger’s output.
Open circuit
When a battery becomes disconnected while a function is in progress.
Reverse polarity
When a battery is connected to the output in reverse.
Overheating
All functions will pause when the temperature inside the charger exceeds 212°F [100°C].
Functions will automatically resume after the charger has cooled to 158°F [70°C].
Time limit over
When the time in the charge “Safety timer” screen has expired.
Batt.V too high
When the battery’s voltage setting in the charger is too low. It may take up to 5 minutes for this
error to show.
Batt.V too low
When the battery’s voltage setting in the charger is too high. It may take up to 5 minutes for this
error to show.
Batt.T too high
When the temperature of the battery exceeds the setting in the “Temp. cut-off” screen.
Communication
When an internal error occurs with the charger’s calibration logic.
TROUBLESHOOTING GUIDE
PROBLEM: Display does not work or turns black when connected to power. Check power supply for proper power. Check
input connections for proper contact, making sure it’s not connected backwards.
PROBLEM: Charger doesn’t recognize battery. Make sure battery is not connected backwards. Check for faulty connection
or wiring. Perhaps there is a defective cell in the pack, in which case the pack should be replaced.
PROBLEM: Does not automatically stop charge after a reasonable amount of time. Charge current too low. Safety timer
not short enough. Internal problem might exist. Disconnect battery IMMEDIATELY and contact Hobby Services.
PROBLEM: Battery voltage low after charge is completed. Make sure charge current setting isn’t too low. Battery might
be defective and require replacement. Check to see if the backup safety timer expired before full charge was reached.
For lithium batteries, make sure the battery capacity value entered in the programming matches the rated capacity of
the battery.
PROBLEM: Will not lock into discharge mode. An improper discharge voltage was entered for the battery. Adjust the
battery voltage in the discharge screen to match the number of cells in the pack. Tx might have a diode in charge circuit,
in which case it’s best to connect the battery to the charger directly (outside of the Tx). Battery might be defective and
require replacement. Battery might already be discharged.
PROBLEM: Low mAh readings after discharge. Batteries might not have been fully charged prior to discharge. Batteries
might have been old or unused for an extended period of time, which may require additional cycles to see if capacity
improves. Battery might be defective and require replacement. Discharge current setting might be too high, and should
be lowered. An improper discharge voltage was entered for the battery. Adjust the battery voltage to the proper value for
the battery. Battery might already be discharged.
PROBLEM: LCD and/ or controls do not function properly. Input power might be connected backwards, and require re-
connection. Contact Hobby Services for further details.