April 21, 2021 37
Troubleshooting Guide
• LCD is not powering on
o Check all connections
▪ At least one of the following power sources is required: PV/Grid/Battery
o Try pressing the power button. Or Timechscreen or navigation button.
• Panels are connected but DC Light is not on
o PV voltage must be 150V-425V
o It’s night
• Panels are not producing
o Check all solar panel connections are wired properly
o Turn on PV disconnect
o Check that the PV input voltage is not greater than 425V
o If system says PV=0V, check PV polarity
• Panels are not producing much power
o PV Wire Strip Length: 5/8”. Your batteries may be charged, you can test Grid Sell to verify.
• System not keeping batteries charged
o Check the charge setting in the Charge Menu
• Auto Gen-Start not working
o Check to make sure your generator is compatible with Auto Start
o Make sure that the Auto Gen Start wire is connected properly to the Sol-Ark 5K and the generator
• Normal LED isn’t on
o Sol-Ark 5K is not working properly (Call us)
• Alarm Light is on
o Check the system alarms menu to see which alarm has been triggered
• Grid HM value is negative when it should be positive (only applies in limited home mode)
o Limiter Sensors are installed backwards or L1/L2 sensors are swapped or L1/L2 sensors mis-wired. Try Auto Learn.
• AC Overload Fault or Bus Unbalance Fault
o Check Transfer Switch/Subpanel wiring
o Check for large loads that pull more than the inverter is rated for (EX: AC units over 3 tons)
• System connects to grid and quickly disconnects
o With a DMM, verify your Neutral wire is connected (should be 0Vac referenced to GND)
o Check your Freq is set to 60Hz and the 5K see’s 120V on L1 & L2 to N.
o If overloading: verify 120/240V grid input and load output wires are not swapped.
o If 120/208V, the L1 and L2 are phase specific. So, you may have to swap Grid L1 L2 for 208V applications.
• DC Overload Fault
o Check PV voltage
o Make sure you have not wired more than 2 solar strings in parallel
• System is beeping
o Check the system alarms menu to see which alarm has been triggered. Most alarms will self-reset.
o There is no battery connected. If not using a battery, select no battery and disable activate batt in Batt menu.
▪ To fully reset system, turn off center button, remove AC Grid and PV Power for 30s (screen is dead), then
power up.
• Battery cable is sparking when connected
o Put the built-in battery breaker in the off position before connecting or disconnecting batteries.
• Battery symbol on home screen is red
o Battery is under voltage or over voltage
• Battery symbol on home screen is yellow
o Battery is low or charge/discharge current is close to the programmed limit (which is ok)
• Grid symbol on home screen is yellow
o Grid parameters are out of specified range or grid is down
• System has restarted
o Happens if: System is overloaded, Battery voltage is greater than 63V, or Software update
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