Set-Up Menu – Defeating Error Codes - Merlin SmartGauge Installation And User Manual

Merlin Power Systems version: 2.0.2
SmartGauge Installation and User Guide
5.6 Set-Up Menu – Defeating Error Codes
In some circumstances, especially during battery charging, it may be necessary to defeat the error
code functions in SmartGauge. Certain constant voltage chargers have a very high charge voltage
delivered for short periods. This high charge voltage can trigger repetitive SmartGauge error code
E 03.
If the "Secondary Alarm" function has been set to activate the alarm on E 02 or E 03, or set to
activate the alarm on all error codes, and E 02 and E 03 have been disabled then they will no longer
trigger the alarm. The remaining error codes will still activate the alarm as programmed.
In the Set-Up Menu the display will show "EC x" signifying Error Codes and "x" being either "1" for
error codes enabled (the default) or "O" for error codes disabled. Use the buttons as before to select
either "1" or "O". Note that this setting only affects error codes E 02 and E 03. The other error codes
will continue to operate and trigger alarms accordingly.
5.7 Set-Up Menu – Displays
There are three display modes available in SmartGauge. The modes apply whether the display is
showing volts or charge status.
The default factory setting displays for 2 minutes then goes into sleep mode. This mode is signified in
the setup menu as "dt t" meaning display type = timed. This display will remain active for 2 minutes
following a button press. It will then go back to sleep. Pressing a button will switch the display back
on for another 2 minutes.
The second display mode is "dt A" meaning "display type = Always" where the display will always be
on and will never go into sleep mode.
The third display mode is "dt U" meaning "display type = Voltage" where the display will go into
sleep mode, after 2 minutes, as usual, below a certain voltage but will always remain on above a
certain voltage. This voltage is actually the upper voltage trip point for the high/low voltage alarm.
The factory default setting for this is 13.20 volts (26.40 volts on 24 volt systems). So if this display
mode ("dt U") is selected and the alarm factory defaults have not been adjusted, the display will
blank as normal after 2 minutes if the battery voltage is below this level but will always be on above
this voltage. This makes sense in so far as if the battery voltage is above this level then clearly the
batteries are either being charged or they are well charged and in either case the extra few
milliamps of power consumed is not an issue. It also allows a keen eye to keep watch on the battery
charge voltage without having to continually press buttons. But when the charger is switched off
SmartGauge will revert to the minimum required current draw by blanking the display 2 minutes
later.
Note that whilst this setting uses the upper deactivation voltage level of the low voltage alarm, the
low voltage alarm does not have to be enabled or active for this function to operate. The two
functions merely share the same value.
To select the display mode, enter the set-up menu as usual, then press the VOLTS button until "dt x"
is displayed. "dt" signifying display type, the x showing either t, A or U. Now press the STATUS
button to scroll through the three or four values. Press VOLTS to confirm the choice. The display will
flash to show the value has been written to memory. The display will then move onto the next menu
item.
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