©
2014 Magnum Energy, Inc.
Page 57
Troubleshooting
6.1 Troubleshooting
Tips
6.1.1 Inverter
Problems
• Inverter turned on, green LED on inverter blinking, no output:
Inverter is in Search
mode. Either defeat Search mode, if not needed, or turn on loads greater than the
Search Watts
setting.
6.1.2 Charger
Problems
• Unit won’t transfer to Charge mode with AC applied:
Is the charge (CHG) LED on the re-
mote blinking? If not, the charger does not recognize the incoming AC as being within acceptable
limits. Measure the input AC voltage at the inverter input terminals – should be 120 VAC +/- 20
VAC (230 VAC +/- 40 VAC for export models). Also, check that the
03B
VAC Dropout
setting on
the remote is 80 VAC or less (160 VAC or less for export models). If the CHG LED is blinking, the
transfer relay should close within 20 seconds and begin charging. If the LED is on solid, the relay
should be closed and the charger should begin charging.
• Transfer relay closes, then opens and continues to cycle:
AC voltage is too low or has
transients that drop the AC voltage momentarily. Change the
03B VAC Dropout
setting to 60 VAC
(110 VAC for export models) and check for improvements. If the cycling continues, back off the
charge rate from 100% to 10% (or “OFF”, if available).
This cycling may also be caused if the AC output of the inverter is connected to the inverter’s AC
input. Check for proper input and output AC wiring.
• Charger not charging even though Charge LED is on steady and the unit says “
Charg-
ing
”:
Full charge rates are not obtained in Charging mode. Full charge rates will occur only after
this mode changes to Bulk charging, Absorb charging, or Float charging modes.
• Charger not charging even though Charge LED is on steady and the unit says “
Bulk
Charging
” (or “
Absorb Charging
”):
Check the
01A DC Volts
and
01B DC Amps
meter values
on the ME-ARC display. It should be 80% or more of rated charge current if the battery voltage
is under 14.0 VDC (28.0 VDC on 24-volt models or 48.0 VDC for 48-volt models). If not, check
the
03E Max Charge Rate
setting and verify the setting is 80% or greater. Still low charge rate?
Check the
03A AC Input Amps
setting. If no AC loads are being passed through the inverter, the
03A Input Amps
setting must be 15 amps (25 amps for 3kW unit) or greater to receive a full
charge rate.
• Charger
says
“
Float Charging
” not “
Bulk Charging
” when the AC is
fi
rst plugged in:
Check the
01A DC Volts
meter on the ME-ARC display. If the battery is >13.0 VDC (>26.0 VDC
for 24-volt models or >52.0 VDC for 48-volt models) then the battery was already charged and
the charger automatically goes to Float charging to keep from overcharging the batteries. Try the
Start Bulk
setting from the
02 CHG Control
menu.
• Charge amps are lower than expected, or is 0 amps DC:
Measure input AC voltage and
increase if the input voltage is under 90 VAC. The charge rate is reduced to keep the input volt-
age above 90 VAC. Also, check the
03A AC Input Amps
and
03E Max Charge Rate
settings to
determine if the current is being limited.
• Charger output voltage is different than expected:
Check the Battery Temperature Sen-
sor (BTS) temperature. If the BTS is installed, the charge voltage settings will increase if the
temperature around the BTS is below 77°F (25°C), and decrease if the temperature around the
BTS is higher than 77°F (25°C).
