Troubleshooting Tips
Component Problem Source of Problem Solution
Basic No power Nut & bolt connections at battery and back of inverter / charger may be loose Check all connections and tighten
    Plug into battery charger may have come loose Reinsert
    Powerstrip Check that it is connected to inverter and set to ON
Component Problem Source of Problem Solution
Battery Not powering equipment Low voltage <11 volts or no reading at all Check volt reading on volt meter.  If <11v, recharge battery w/separate charger beyond 11.5v.  If no reading, check that cables are connected to battery.
    If less than 11 volts, charger will NOT work in the 750 or 1250 watt inverters. Recharge battery with separate charger beyond 11v.
    Positive and negative cables may have been incorrectly installed  - thus damaging cells in battery. May need to replace battery.
    Check that power in building does not get turned off overnight during recharging period.  
    Check battery casing for damage or terminal residue. May need to replace battery.
    Multiple batteries not connected correctly. Check that cables are connected in parallel, positive to positive, and negative to negatve.
    Has been used for 250+ full cycles. May need to replace battery.
Component Problem Source of Problem Solution
Inverter Shuts down The battery may be < 11 volts. Need to recharge battery with separate charger beyond 11.5v.
    Drawing more watts that the inverter can handle. LED in rear on right will be red.  Disconnect one or more pieces of equipment that are drawing power.  Press reset button.
      Power up equipment a minute apart since this is when the equipment draws the most watts.
      For 350 watt stand alone inverter, switch on & off.  You may need to replace the 40 amp fuse.
    Inverter is set in "off" position Switch to "Auto / remote"
    Inverter is set to "charge only" mode Switch to "Auto / remote"
    Positive and negative cables may have been incorrectly installed - thus damaging the inverter May have to replace inverter / charger
Component Problem Source of Problem Solution
Charger Batteries do not charge much beyond 12v Some cells in battery may have been damaged if left in a discharged state May have to replace battery if you cannot bring it up beyond 12v.
    Charger is not functioning May need to replace charger, but try to charge a good battery to confirm it is a problem with the charger.

To speak to a technical support specialist, please contact us at 781-935-3450

10P Roessler Road ● Woburn, MA ● 01801 ● USA ● tel. 781.935.3450  ●  www.newcastlesys.com

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