AC Battery Installation
© 2016 Enphase Energy Inc.
141-00036 Rev 01
16
Operation
The following sections describe operation of the AC Battery.
Charging and Discharging
The charging and discharging functions are controlled by the Envoy-S as follows:
Charging
: The AC Battery typically charges during daylight hours and when the solar production is greater
than the home consumption. The AC Battery can also be programmed to charge from the electric grid at
night under certain conditions.
Discharging
: The AC Battery discharges power only to service local loads. It does not discharge power
through the utility meter onto the electric grid. The AC Battery discharges for use by the home if
all
of the
following occur:
The consumption exceeds the production
The actual time of day is after the
peak start time
, if
time of use
is configured
The batteries are not fully discharged. If the batteries are fully discharged, then they must recharge
from the PV system before they can discharge again.
LED Overview
The LED glows red while the AC Battery boots up. If the LED remains red for more than two minutes, the
battery is in trickle charge mode and will remain so until it reaches a minimum state of charge (up to 30
minutes). After the AC Battery is booted up, the LED becomes blue or green (depending on the charge level).
If the LED remains red after one hour or changes to a flashing red state, contact Enphase Customer Support
at
enphase.com/en-us/support/contact
.
Other LED states include:
State
Description
Solid red
Starting up
Red flashes in sequences of two Error. See “Troubleshooting”.
Solid amber
Not operating due to high temperature. See
“Troubleshooting”.
Solid blue or green
Idle. Color transitions from blue to green as state
of charge increases. You can check Enlighten for
charge status.
Slowly flashing blue
Discharging
Slowly flashing green
Charging
Green one second flashing
Looking for noncommissioned unit
Off
Not operating. See “Troubleshooting”.
