Sargent Electrical Services Ltd. Copyright 2002
Issue 1 Page 1 of 1 21 October 2002
1 EC325 Control Panel Replacement
1.1 Installation Process
• Unpack the new control panel.
• Remove the decorative bezel from the control panel, by pulling in the direction of the BLUE
arrows.
• Remove the two screws that hold the panel in place.
• Carefully lift the panel forward to gain access to the rear circuit board of the control panel.
• Disconnect the 20-way connector and the 2-way temperature probe connector.
• Place the old panel to one side.
• Connect the new panel to the 20-way and 2-way connectors.
• Check that all connectors are firmly seated.
• Refit the control panel using the original screws and refit the bezel.
1.2 Current sensor re-calibration
Each EC325 control panel needs 'calibrating' to match the current sensor fitted within the EC325PSU.
The procedure is as follows:
• If you have a solar panel fitted, either unplug the panel at the base of the PSU or carry out
this procedure at night.
• With the charger turned off, and the power turned off at the control panel (no LED’s on)
• Scroll down ▼ the display until battery current is shown
• Hold down the select button ◄ (left arrow) until 'calibrating….' appears; keep the button
pressed until the battery current reading re-appears.
• Now repeat the process to store the calibration reading.
• Hold down the select button ◄ (left arrow) until 'calibrating….' appears; keep the button
pressed until the battery current reading re-appears.
• The current reading should now be correct.
Note: After calibration, the panel will display 0.1 Amp with the LCD backlight on, this will drop to
0.0 Amp when the backlight turns off.
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