Troubleshooting Guide - Sensata Dimensions 12LPC15 Owner's Manual

Troubleshooting Guide

Problem
No AC output during
inverter mode
Low Battery
Overload
High Temperature
Inverter will not turn
off
Charger or bypass will
not enable
Undercharged Battery
NOTE: If the status LEDs are illuminated, refer to the "LED Status Chart" for additional information.
NOTE: Whenever cycling power, wait at least 30 seconds before turning back on to allow the inverter processor to
completely power down. If the processor does not power down, it may retain the previous fault state.
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Check if the in-line fuse which is located within 18" from the battery's positive post is
Check if DC connections are tight and clean.
Check if the AC output circuit breaker is tripped.
Check if the switches are on. Check if any of the wires connected to the remote
switches are loose or disconnected. (Local switches are inactive with "R" configurations.)
Check if the GFCI is tripped. Reset the unit if
necessary by cycling power.
For hardwired connections, remove DC input voltage and inspect the AC hardwire
The use of a battery isolator is not recommended due to excessive voltage drop across
Battery voltage must be above the low battery threshold (measured at the inverter) for
Check for proper DC wire AWG (see DC Wire Gauge & Fusing section.)
Unplug all loads and reset the inverter. To reset,
turn the unit off and wait for 30 seconds to turn
on again.
Verify that all vent openings are clear of obstruction.
Reduce ambient temperature and/or load.
Verify that all remote "On/Off " switches are in the "Off " position.
Verify that the AC input voltage is between 90 V and 130 Vrms.
Verify that the AC input breaker has not tripped.
Check battery type selection. For LFP battery type, check battery amp-hr setting.
Table 14 Troubleshooting
12LPC15 Manual
Possible Causes
installed or open.
If GFCI is set, disconnect all loads
and connect a test light. If the test
light is off, replace the GFCI or
return the inverter for service.
connections.
isolator terminals.
the inverter to be on.
If the overload condition clears,
check for short circuits or check the
load size versus the inverter output
If the overload persists, possible
Let the unit cool down.
wattage size.
failed inverter.