Solar Controller User Manual (GP-PWM-30-UL)

GP-PWM-30-UL
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30
© 2019 Go Power!
What causes a warning signal and when are the warnings triggered?
Connection
Warning
Notes
LCD
Battery 1
reverse polarity
“POL” on LCD and
constant audible
alarm
Battery 2
reverse polarity
Battery 2 status
display doesn’t show
Battery 1 must be
connected with
correct polarity for
unit to be powered
on
PV reverse
polarity
“POL” on LCD and
constant audible
alarm
PV short circuit
Unit shows moon
symbol when PV is
connected and in
bright sunlight
*must have bright
sunlight on PV
too
Why does the voltage fluctuate so much when charging with the LFP
setting?
Lithium batteries contain smaller battery cells. The voltages of these individual
cells must be balanced during the charging process by the Battery Management
System (BMS). Imbalances will cause fluctuations in the battery voltage
measurement, but this will stabilize as the cells are charged and balanced.
Additionally, lithium batteries have higher resistance than lead acid batteries.
This affects the charge controller’s battery voltage measurements and its
compensation for wire resistance.
Reduce wire inductance which may also cause voltage fluctuations. Keep battery
wires close together, or gently twist positive and negative wires together.
I don’t see my charge controller in the Device Selection screen of the Go
Power! Connect app.
The Device Selection screen will only display a charge controller that has already
paired with the mobile device or a charge controller that is in the pairing process.
The pairing process is initiated by pressing simultaneously the A and B buttons
for 3 seconds. This is needed only when the mobile device is connecting with the
charge controller for the first time.