ROGUE MPT-3024, Installation Manual And Owner'S Manual, Page: 49 / 52

49
Problem Possible Cause(s) Possible Solution(s)
Equalize never starts
•
PV array output insuffi-
cient
•
Battery in low state of
charge
•
Equalize time is set to zero
•
External loads active
•
Array may be undersized
for system. Re-evaluate and
increase array size if neces-
sary / possible.
•
Array might not be receiv-
ing enough sunlight. Con-
sider relocating array for
better exposure.
•
Weather conditions could
be limiting array output. Wait
for conditions to improve.
•
Make sure PV modules are
clean.
•
Check all connections for
damage and corrosion.
•
Ensure that battery is
nearly full before initiating
equalize
•
Set time for appropriate
duration
•
Loads should be turned off
or disconnected before initi-
ating equalize
Output boost to batteries is
less than expected
•
PV array V
mp
is close to or
below battery voltage
•
Battery is nearly full
•
Controller is not in MPPT
mode
•
Arrays wired for the same
nominal voltage as the bat-
tery bank will often have a
V
mp
that is lower than the
battery voltage as the tem-
perature of the array rises. A
warm 12-volt array, for ex-
ample, may have a V
mp
of 14
volts or less — which may
be at or below the battery
voltage. In these situations,
there will be no boost avail-
able. Wire the array for 24
volts when using a 12-volt
battery, if possible.
•
As battery voltage in-
creases, boost decreases.
This is normal.
•
Boost is available only
when operating in MPPT