Status and Information
34
900-0209-01-00 Rev A
Silent
The system display shows the operating mode as
Silent
if the charge controller has stopped charging.
This message represents a variety of conditions, many of which are common. For example,
Silent
is
shown at night or any period of insufficient light. Table 4 lists the LED indicators and the PV open-circuit
voltage which show specific Silent conditions. In these cases, no LED indicators will be illuminated.
However,
Silent
may also appear in the event of an error shutdown. If the mode is
Silent
and the red
F
AULT
indicator is illuminated, a ground fault may have occurred. See pages
15
and 55.
Figure 25 LED Indicators (Silent mode with
F
AULT
)
Table 4 Reasons for Silent Mode
C
HARGE
LED
S
TATUS
LED
F
AULT
LED
V
oc
Other
No No No
Below battery
No PV energy or “Sleep” mode. If the V
oc
is less
than battery voltage, the controller is “sleeping”.
This is normal at night. The threshold for Sleep
mode is settable. See page 43.
Above battery
Low light or “Snooze” mode. V
oc
is greater than
battery voltage but not enough array current is
available for charging. This is normal in the
morning, evening, or in heavy clouds (low light).
The threshold for Snooze mode is settable. See
page 43.
Intermittent Any
No Above
battery
“Wakeup” mode. The controller has detected
more than the required 10 watts, but has not yet
begun charging. This condition only lasts a short
time. The blue
C
HARGE
indicator may turn on and
off briefly while the controller is performing initial
power tracking. This can also occur if PV
conditions change and the controller has to
calculate a new power point.
If continuous, this behavior may also indicate an
“unloaded output” condition where the batteries
have been disconnected from the controller.
Red (solid)
