Magnum Energy ME-MR Series Owner's Manual page 37

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: Measure the
input AC voltage, it should be 120VAC +/- 20 VAC; 230 or 240 VAC +/-
40VAC also check that VAC dropout setting on the remote is 80 VAC(for NA
models) or less.
• 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 VAC Dropout setting to 60 VAC and check for improvements. If
the cycling continues, back off the Charge Rate from 100% to 10%.
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.
Please check the remote for indication of a fault.
• Charger not charging even though charge LED is on steady and
the unit says "Charging": Full charge rates are not obtained in "Charging"
mode, 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 DC
amps meter, and DC voltmeter on the ME-MR 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
Charge Rate setting and verify the setting is 80% or greater. Still low charge
rate? Check the Shore Amps setting to verify setting. If no AC loads are
being "passed thru" the inverter, the Shore Amps setting must be 15 amps
(25 amps for 3kW unit) or greater, to receive full charge rate.
• Charger says "Float Charging" not "Bulk Charging" when the AC
is fi rst plugged in: Check DC voltmeter on the ME-MR display, if the battery
is over 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.
• 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 try and keep the input voltage above 90 VAC; also
check the Shore Max and Charger Rate settings to determine if the current
is being limited.
• Charger output voltage is higher than expected: Check the Battery
Temperature Sensor (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).
©2009 Magnum Energy Inc.
Operation
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