Figure 5-30, Tfmr Overtemp Fault; Figure 5-31, Unknown Fault - Magnum Energy ME-RC Owner's Manual

5.0 Operation
Remedy: The AC pass-thru relay is most likely stuck. A relay usu-
ally sticks because of damage to the contacts from trying to handle
currents greater than they are rated. This is usually caused by not
protecting the relay from handling high continuous currents, or by
switching high current inductive loads. The internal relay contacts are
rated to handle 30 amps AC continuously and should be protected
with a breaker sized no larger than 30 amps. If you are connected
to an AC source (grid or generator) and running large inductive
loads (i.e., pumps, motors, etc.,) on the inverter output, turn those
particular loads off prior to removing the AC input source. This fault
requires an inverter or power reset (Sections 6.2 & 6.3) to clear.
PWR
FAULT
Tfmr Overtemp
CHG
Settings/Info..
INV

Figure 5-30, Tfmr Overtemp Fault

• Tfmr Overtemp – This fault message is displayed when the TCO
(Temperature Cut-Out) opens and causes the inverter to shut down to
protect the internal power transformer from damage. When the TCO has
cooled down, the inverter will automatically restart and resume operation.
Remedy: If the fault continues to occur, disconnect all the inverter's
AC output wires and reset the inverter (see Section 6.2). If this fault
does not clear after doing a reset, the inverter may require service.
PWR
FAULT
Unknown Fault XX
CHG Settings/Info..
INV

Figure 5-31, Unknown Fault

• Unknown Fault – This fault message displays when the inverter/
charger has sent a fault code that cannot be determined by the remote.
Remedy: Call the Technical Support department at Magnum Energy
(425-353-8833) to assist you.
51
Tfmr Overtemp appears on the
LCD. The FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
Unknown Fault XX appears on the
LCD. The FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
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