Xantrex Truecharge 20+ Amp, Owner'S Manual, Page: 49 / 78

Troubleshooting
4–5
Symptom Charging light blinks but does not come on steadily. Other
indicator lights are off.
Symptom The 20 amp indicator light blinks on Truecharge 20+, or the
40 amp light blinks on Truecharge 40+. Other indicator lights are off
(only when temperature sensor is installed).
Symptom True appears to be taking too long to charge battery.
Ready indicator light does not light after 24 hours of charging.
Possible Cause Solution
1. Battery voltage is too
high (above 15.5 volts).
2. Battery is connected to
another charging source
with voltage above
15.5 VDC.
1. Check battery. Do not charge a
battery rated at more than 12 volts
nominal.
2. Disconnect or turn off other
charging sources such as the
alternator or the charger on a
generator with electric start.
Possible Cause Solution
Battery temperature is too high
for safe charging. Allow battery to cool. Improve
ventilation or install in cooler
location. It may indicate a shorted
cell in the battery or excessive
water loss.
Possible Cause Solution
1. Battery capacity is too high
for Tru model.
2. Load connected to battery is
draining charge current so
that battery does not
recharge.
3. Battery has a damaged cell.
1. Use a higher capacity
charger.
2. Disconnect load or switch
load off.
3. Replace battery.