Magnum Energy ME-G Series - Manual (Page 49)

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2015 Sensata Technologies Page 40
Maintenance and Troubleshooting
4.3 Troubleshooting
Use the chart below to assist in troubleshooting the ME-G Series inverter/charger.
Table 4-1, Basic Troubleshooting
Symptom Possible Cause Recommended Solution
No output power.
Inverter LED is OFF.
Inverter is switched OFF Switch the inverter ON.
Battery voltage too low. The battery
voltage level has dropped below the
LBCO set-point for more than one
minute.
Check fuses/circuit-breakers and cable connections.
Check battery voltage at the inverter’s terminals. Your
batteries may need to be charged, this fault condition
will automatically clear when the battery voltage
exceeds the LBCI voltage.
The battery voltage is too high. The
inverter automatically resets and
resumes operation when the battery
voltage drops to the HBCI voltage or
lower.
This condition usually only occurs when an additional
charging source (alternator or other external charging
source) is used to charge the battery bank. Reduce/
turn off any other charger to the inverter batteries to
allow the voltage level to drop.
Over-temperature condition: The
internal temp of the inverter has
risen above acceptable limits; caused
by loads too great for the inverter to
operate continuously, or by lack of
ventilation to the inverter. When unit
has cooled, it will automatically reset
and resume operation.
Reduce the number of electrical loads that you are
operating, this will avoid a repeat over-temp shutdown
if the cause was too many loads for the ambient
conditions.
Check ventilation around the inverter, ensure cool
air is available to pass-thru the inverter (refer to the
ventilation requirements in Section 2.1.3).
AC overload condition: The
inverter has turned off because the
connected loads are larger than the
inverter’s output capacity, or the
output wires are shorted.
Reduce the AC loads connected to the inverter, or
remove all AC output wiring and restart the inverter.
Internal fault: This fault occurs when
an internal fault is detected.
To clear this fault, a power or inverter reset is
required—see Section 4.4. If this fault does not clear
or returns, the unit will need servicing.
No output power:
a) Green LED is
fl ashing (x1/sec).
b) Green LED fl ashing
rapidly (fl utters).
a) Unit is in Search mode, which
means load is too small for Search
mode circuit detection.
a) Turn on a load greater than 5 watts to bring
inverter out of search, or turn off search with remote.
b) Unit is in reset. b) Perform a power or inverter reset is required—
see Section 4.4. If fault continues, the unit needs
servicing.
Low output or
surge power when
inverting.
Loose or corroded battery cables. Clean and tighten all cables.
Low batteries. Recharge or replace batteries.
Loose AC output connections. Tighten AC output connections.
Battery cables are the wrong length
or gauge.
Verify recommended cable lengths and gauges from
the manual. Replace cables as necessary.
Low charging rate
when connected to
AC power.
Charge rate set too low. Adjust charge rate or SHORE settings on remote.
Low AC voltage (<90 VAC). Check AC input wiring.
Low charging
rate when using a
generator.
Generator output is too low to power
both load and charger.
Reduce the load, increase the generator’s RPMs.
Check the SHORE settings (if remote connected).
Charger does not
charge.
Loose or corroded battery cables. Clean and tighten battery cables.
Defective batteries. Replace batteries.
Wrong charger settings. Adjust the charger settings, ensure the unit is not in
charger standby.
Wrong AC input voltage. Verify proper AC input voltage and frequency.
While charging, the
DC charge voltage is
higher or lower than
expected.
If the Battery Temperature Sensor
(BTS) is installed, the DC voltage will
increase or decrease depending on
the temperature around the BTS.
This is normal; see Section 3.5 (Battery Temperature
Sensor Operation) for more information.