©1999 Trace Engineering
4.0 TROUBLESHOOTING
In the event the inverters do not power up when the dc disconnects are switched on, follow the
procedure below to isolate the problem.
WARNING: THESE STEPS INVOLVE REMOVING THE COVER ON THE DC SIDE OF THE INVERTER,
EXPOSING DANGEROUS VOLTAGES AND SHOULD ONLY BE PERFORMED BY QUALIFIED
PERSONS.
Remove the side cover from the dc side of the inverter (right-hand side extension cover for the SW
series inverter and left-hand side extension cover for the DR series inverter).
Use a dc voltmeter to check the battery voltage on the inverters dc battery input terminals.
Check the connections from the PV array are properly wired. Verify the polarity is correct.
If the measured voltage is appropriate for the battery configuration (12, 24 or 48 V dc), check the polarity
of the voltage. Correct if necessary.
Ensure the batteries are not completely discharged. If the batteries are discharged, they will need to be
externally recharged until the inverters power-up on the dc battery voltage. Once the inverters power-up,
switch on the ac disconnect and ac utility (or generator) power. Allow the inverters to completely
recharge the batteries. Retest for proper dc operation.
Check the battery cables and connections. All connections should be properly torqued.
If the above checks pass and the inverter still does not operate on dc battery voltage, contact the dealer
or Trace Engineering for assistance.
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