Merlin Power Systems
version: 2.0.2
SmartGauge Installation and User Guide
Page 11
If the battery voltage goes outside the measurement range (9 to 17 volts for 12 volt systems, 18 to
34 volts for 24 volt systems), the volts display will show “HI” or “LO” while the voltage remains
outside the range. An “E 04” error will also be displayed and will remain displayed, to alert the user
to a problem, until any button is pressed. If the battery voltage remains below the low voltage
warning for the set battery type an “E 02” error will be displayed. If the battery voltage remains
above the high voltage warning for the set battery type an “E 03” error will be displayed.
These high and low voltage warnings should be responded to immediately as battery damage may
occur or other dangerous conditions may arise such as the production of explosive gasses. If power
is lost an “E 01” error will be displayed.
“HI” and “LO” error displays are only shown if the display is currently set to “Volts”. They are not
displayed if the display is set to “Status”. They are also not shown if the display has gone into sleep
mode. But the resulting “E 0x” error
will
remain displayed. In fact,
all
error codes are displayed
regardless of sleep mode.
4.0 Basic Monitor Use
Pressing the VOLTS button will display volts on
the primary auxiliary battery bank. Pressing the
STATUS button will display charge status of
that same bank. Pressing the BATT 2 button
will show the voltage on the secondary or
engine start battery bank and the PGM/Batt 2
LED will light up to indicate the engine battery
voltage is currently being displayed. To return
to the primary bank, press VOLTS or STATUS.
If the SmartGauge unit is left alone for 2
minutes, it will go into sleep mode. This is a
power saving feature. SmartGauge will
continue to operate, calculating the charge
status and monitoring for error conditions,
alarms etc. Pressing any button will bring
SmartGauge out of sleep mode and the display
will operate for a further 2 minutes. Sleep
mode may be defeated if required (refer to the
“Set up Menu - Display Modes”), later in this
user guide.
