Merlin SmartGauge Installation And User Manual page 21

Merlin Power Systems version: 2.0.2
SmartGauge Installation and User Guide
"E01" – Power was lost and reapplied.
If power to SmartGauge is lost, when it is reapplied SmartGauge has no way of knowing how long
power was lost or know what has happened to the batteries in the meantime. Therefore "E01"
means that the charge status will probably be incorrect. It also means that any primary status alarms
will have been disabled. Alarm set points will still be as they were last set but the actual alarm will be
switched off and will remain so until re enabled by the user. Any low voltage alarms or secondary
alarms will remain set as they were prior to the power loss.
Pressing any button will clear the "E01" error code. The display will then show the time in hours and
minutes since power was reapplied (up to a maximum of 99 hours, 59 minutes). Pressing any button
will clear this display. If no button is pressed, the display will time out after 2 minutes then revert to
normal operation. While showing the time since re-power, the PGM LED will flash.
"E02" – Battery voltage has been below acceptable level for battery type.
Each different battery type has certain voltage and time limits, which, if exceeded, may damage the
batteries.
For instance if a deep-cycle lead acid battery experiences a terminal voltage lower than 10.2 volts for
any appreciable length of time it may cause serious, immediate, permanent damage to the battery.
SmartGauge has different voltage and time limits for each battery type. If this limit is exceeded then
SmartGauge will generate an "E02" error. This error will alert the user to the problem. Be aware that
if this error code occurs it is an indication of a severe problem in the installation that, if allowed to
persist, will eventually destroy the batteries. It is not an indication of a problem in SmartGauge.
Note that this error means the voltage and time limits have been exceeded since a button was last
pressed. It does not mean they are currently being exceeded. The error is stored after the fault has
cleared until the error is cleared by pressing a button.
"E03" – Battery voltage has been above acceptable level for battery type.
This is similar to "E02" but for high voltage. The voltage level and time limits vary dependent upon
the battery type selected.
"E04" – Battery voltage has exceeded the measurement range of SmartGauge.
SmartGauge can accurately measure voltages between 9.00 and 17.00 volts in 12 volt mode and
between 18.00 and 34.00 volts in 24 volt mode.
If these limits are exceeded SmartGauge has no way of measuring what the actual voltage is. Also, if
these limits are exceeded there is something seriously wrong with the installation. Such extreme
voltages simply should not arise and indicates a serious problem with the charging system.
• HI Battery voltage is above upper measurement limit of 17.00 volts (34.00 volts in 24 volt
• installations)
• LO Battery voltage is below lower measurement limit of 9.00 volts (18.00 volts in 24 volt
• installations)
Note that Hi and LO errors will clear as soon as the voltage returns to within the measurement
range. They will, however, leave an "E04" error code on the display.
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