Installation Manual

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).