ROGUE MPT-3024, Installation Manual And Owner'S Manual, Page: 47 / 52

47
Problem Possible Cause(s) Possible Solution(s)
Controller will not power up -
display is blank
•
Battery voltage is insuffi-
cient
•
Improper wiring
•
Battery disconnect open
or tripped
•
Ensure that battery volt-
age is greater than 10 volts
•
Check integrity of wiring
and connections
•
Reset disconnect and/or
determine cause of tripping
Controller is always sleeping
•
PV array is disconnected
•
PV array is connected
backwards.
•
PV array V
oc
is below bat-
tery voltage
•
PV array is producing less
than 100mA
•
Check for open wiring and
terminal corrosion
•
Connect with proper polar-
ity
•
Check for array / battery
mismatch. Array voltage
must be greater than battery
voltage by at least 2 volts.
•
Check integrity of wiring
and connections
•
Sunlight may be insuffi-
cient due to time of day or
weather conditions. Wait un-
til conditions improve
•
Sunlight may be insuffi-
cient due to time of day or
weather conditions. Wait un-
til conditions improve
Battery voltage as measured
at batteries during absorb or
float is higher or lower than
setpoints displayed on con-
troller
•
The battery temperature
sensor, if connected, is auto-
matically altering ABSORB
and FLOAT setpoints based
on battery temperature. See
Section 7 for more informa-
tion.
•
Wiring may be introducing
voltage drop
•
Wiring connections may be
loose or corroded
•
Normal operation.
•
A small amount of voltage
drop (<2%) is to be ex-
pected and is normal. Larger
amounts may suggest that
wire size is too small, and
should be increased accord-
ingly. Setpoints may be al-
tered slightly to compensate
— see Section 9.3 for more
information.
•
Check connections