800.261.3602
Revised 07/18
Power Up Initialization Routine
Now that the installation of the SunExplorer III controller is complete, re-insert the fuse into the
battery fuse holder to power the controller. If Powering up for the first time after installation or
after replacing a battery, the SunExplorer III runs thru the following sequence: PV panels are still
covered from installation process.
1.
When first powered the SunExplorer III display will indicate 88.8 and back light will turn on.
The display will indicate the following, each for 3 seconds,:
The software revision................. “1.2"
The rated system voltage….........“12"
The rated maximum current......“35"
2.
The controller will then cycle thru the seven display positions, lighting the corresponding
LEDs, displaying eleven readings, each for 3 seconds.
Battery % remaining …….......... “100" % (Actual reading)
Battery voltage.............................. “12.9" V (Actual reading)
Battery type / Temperature
“FL.F” (Flooded Battery……...Fahrenheit temperature scale)
“GL.C” (Gel Battery................... Celsius temperature scale)
“AG.F” (AGM Battery………..... Fahrenheit temperature scale)
Battery Temperature “77”F (Displays actual temperature, if temperature sensor is
connected)
Solar Voltage “LPu” (Low PV voltage, panels are still covered or its night time)
(example “19.5" V, if panels are uncovered and its day time)
Solar Charge Amps........................“0.0" (Still in night mode)
(example “25.0" Amp, if panels are uncovered)
Solar Charge Amp Hours “ 0.0" (unit has begun to charge)
LED Charge Status:
LED GREEN night mode.........................“n_c”
Blinks RED bulk charge.........................“bch”
Blinks RED absorption charge……....“Ach”
Blinks GREEN float charge..................“Fch”
Blinks GREEN auto boost enabled...“AbE”
Blinks ORANGE Equalization.............“Ech”
Blinks RED Soft charge.........................“Sch”
Once the controller has run thru the power up sequence, the controller will return to normal
mode, returning to battery % remaining position, displaying the charge of the battery, and will
blink the LED once every 10 seconds, indicating it in night mode (solar panels are still covered).
Now remove the blanket or material covering the solar panels. If the panel voltage is greater than
16.0VDC the charge controller will enter the bulk charge stage, causing the charge status LED to
lite red and blink if in soft charge or be solid for bulk charge. The back light will be lit for 30 seconds
and then turn off and the battery % remaining reading will still be indicated on the LCD display.
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