The following fault codes are typical codes appearing on the ME-RC, ME-MR, ME-ARC, and ME-ARTR remotes. Always refer to your full owner's manual for complete information.
| Fault Code | Cause | Possible Solution |
|---|---|---|
| AC Backfeed | The inverter has shut down because AC voltage from an external AC source has been detected on the inverter’s AC output. | 1. Turn off AC source (grid or generator) to the inverter and perform a soft reset. 2. Check AC wiring to ensure the incoming hot and/or neutral wires are unable to be connected to the AC output. Perform a soft reset. |
| AC Overload AC Ovrld |
The inverter has detected a load on the AC output that is larger than its capacity. | 1. Remove excessive AC loads from the inverter output. Perform a soft reset and press the inverter on/off pushbutton to turn the inverter back on. 2. Check for wiring shorts on the AC output by disconnecting all loads. Perform a soft reset and press the inverter on/off pushbutton to turn the inverter back on. 3. Check if the AC output wires are incorrectly wired. Correct wiring as needed. Perform a soft reset and press the inverter on/off pushbutton to turn the inverter back on. |
| Breaker Tripped Brk Trip |
The AC input breaker on the inverter/ charger has opened due to excess current flow through the inverter to the AC loads. | Reduce the AC loads on the inverters output to ensure the amps to the inverter loads do not exceed the input breaker rating. Push the inverter's AC input circuit breaker to reset and resume operation. |
| Dead Batt Charge Dead Bat |
The inverter has detected very low voltage on it's DC input terminals before it begins charging (less than 7 volts (12V system), 14V (24V system), or 28V (48V system). | 1. Check voltage at the batteries, if low, charge the battery bank using another DC charger. The inverter can take over charging after the batteries reach 9V (12V system), 18V (24 volt system), or 36V (48 volt system). 2. Check the DC voltage at the inverter's DC terminals and compare with the voltage at the batteries, if greater than 0.5 VDC difference, check to ensure all connection are tight and the fuse or circuit breaker between the inverter and battery bank is good. 3. Check for bad batteries in the battery bank and repair as necessary. |
| FET Overload FetOvrld |
The inverter has sensed the internal FETs (Field Effect Transistors) have heated up too quickly. This is usually caused by a load or short on the AC output that is larger than the inverter can handle. | 1. Remove excessive load from inverter output, allow the inverter to cool down, and press the inverter on/off pushbutton to turn the inverter back on. 2. Perform hard reset of the inverter and press the inverter on/off pushbutton to turn the inverter back on. If the fault does not clear, the inverter will require service. |
| High AC Volts High VAC |
The inverter has detected higher than normal voltage on the AC input while charging. | Correct the AC source voltage to make sure the AC voltage is less than 130 (on 120VAC systems). Disconnect the AC source (grid or generator) from inverter's AC input and do a soft reset. (Note: some generators will exhibit high AC voltage on startup) |
| High Battery High Bat |
The inverter has detected battery voltage greater than the High Battery Cut Out set point (>16.0 V on 12-volt ME/RD models, >16.9V on 12-volt MS models, >32.0V on 24-volt ME/RD models, >33.8V on 24-volt MS models, >67.6V on 48V models) | 1. Check battery wiring to make sure it is properly wired for the inverter (12V/24V/48V nominal). 2. Disconnect external charging sources that could be causing battery voltage to increase higher than it should. |
| High Batt Temp HiBaTemp |
The inverter/charger has shut down because the battery temperature sensor (BTS) is reading higher than 54°C/129°F. | 1. Ventilate battery area, get external cooling fans on the batteries. Fault will clear automatically once battery temperature sensor (BTS) reads less than 49°C/120°F. 2. Check battery temperature sensor (BTS) reading in Tech menu, if it reads 151°C/303°F, the battery temperature sensor may be faulty and needs replacing. |
| Internal Bridge Bridge |
The inverter has activated a fault shutdown to protect the internal FET (field effect transistor) bridge circuit. | Perform a hard reset of the inverter. If the internal fault remains or returns, the inverter will require repair at an authorized service center. |
| Internal Charger CHARGER |
The inverter has activated a fault shutdown to protect the internal charger circuit. | Perform a hard reset of the inverter. If the internal fault remains or returns, the inverter will require repair at an authorized service center. |
| Internal NTC NTC Snsr |
The inverter has activated a fault shutdown to protect the internal NTC (negative temperature coefficient) circuit. | Perform a hard reset of the inverter. If the internal fault remains or returns, the inverter will require repair at an authorized service center. |
| Internal Relay IntRelay |
The inverter has activated a fault shutdown to protect the internal relay transfer circuit. | Perform a hard reset of the inverter. If the internal fault remains or returns, the inverter will require repair at an authorized service center. |
| Low Battery Low Batt |
The inverter has detected a battery voltage below the Low Battery Cut Out (LBCO) setpoint. | 1. Connect AC source (grid or generator) to inverter/charger's AC input to charge the batteries. Fault will automatically clear when the battery voltage increases to 12.5V (12V system), 25.0V (24V system), 50.0V (48V system). 2. If the battery voltage is above critical low battery (9V on a 12V system, 18V on a 24V system, 36V on a 48V system), the fault can be cleared by performing a soft reset. Press the inverter on/off pushbutton to turn the inverter back on. |
| Overcurrent OvrCurnt DC Overload |
The inverter shut down to protect internal components from overcurrent typically caused by excessive load connected to the inverters AC output. | 1. Remove excessive AC loads from the inverter output. Press the inverter on/off pushbutton to turn the inverter back on. 2. Check for wiring shorts on the AC output or if the output wires are incorrectly wired. Once corrected, press the inverter on/off pushbutton to turn the inverter back on. |
| Overtemp | The inverter has detected that the FETs (Field Effect Transistor) and/or transformer inside have exceeded their operating temperature. (Transformer > 117°C/243°F, FETs > 90°C/194°F) | 1. Reduce loads on the ac output if inverting, or lower charge rate if charging the batteries. Once temperature is reduced, the unit will automatically restart. 2. Ensure the inverter is not in a hot area and has proper ventilation. Once temperature is reduced, the unit will automatically restart. 3. Check that the internal fans are running. If the Tfmer/Xfm (transformer) or FET temperatures are above 60°C/140°F and the fans are not running, contact an authorized service center for repair. 4. If internal reading shows 151°C/303°F, this indicates a thermistor has shorted and the unit will need to be repaired. Contact an authorized service center for repair. |
| Stack Clock Fault Stak CLK |
The inverter has detected either a stacking cable problem or one of the inverters in a stacked system is losing synchronization with the other inverter. | 1. Disconnect and reconnect stacking cables, then perform a hard reset. 2. If unit is a standalone inverter, blow out the stack port with compressed air, then perform a hard reset. 3. Replace stacking cable, then perform a hard reset. |
| Stack Mode Fault StakMode |
The unit has detected a problem with the other inverter in a stacked system. This fault typically occurs when the other inverters in the system are not in the same mode (i.e. charging or inverting) as the main inverter. | Check remote display to see what modes or faults are displayed on all inverters by pressing port button. Make sure all inverters are turned on, do not have an active fault and all have AC power present at both inputs if in charge mode. |
| Stack Phase Fault StckPhas |
The inverter has detected that the outputs of the inverters are not in sync or that they are not 180 degrees out of phase with one another. | 1. Check AC wiring to ensure phasing is consistent on all inverters (i.e. Hot 1 going to Hot 1, Hot 2 going to Hot 2). 2. Check AC input source to ensure Hot 1 and Hot 2 is present on all inverters. 3. Push AC input circuit breakers on each inverter to reset. 4. Perform a hard reset of the inverter. If the internal fault remains or returns, contact technical support. |
| Stuck Relay StkRelay |
The inverter has detected that the internal relay should be activated to allow for charging/AC pass through, or inverting, but is not switching appropriately. | Perform a hard reset of the inverter. If the fault remains or returns, the inverter will require repair at an authorized service center. |
| Tfmr Overtemp TfmrTemp |
The internal transformer temperature is reading higher than 118°C/244°F. | 1. Reduce loads on the ac output if inverting, or lower charge rate if charging the batteries. Once temperature is reduced, perform a soft reset. 2. Ensure the inverter is not in a hot area and has proper ventilation. Once temperature is reduced, perform a soft reset. 3. Check that the internal fans are running. If the Tfmer/Xfm (transformer) temperature is above 60°C/140°F and the fans are not running, contact an authorized service center for repair. 4. If internal reading shows 151°C/303°F, this indicates a thermistor has shorted and the unit will need to be repaired. Contact an authorized service center for repair. |
| No Inverter Comm No Comm |
The remote is not receiving any information from the inverter. | 1. Reset the remote by disconnecting the remote communications cable from the inverter for 5 seconds, and then reconnect it. 2. Inspect the remote cable for damage. Replace if necessary. 3. Disconnect the remote from the Remote port on the inverter and connect to the Network port. 4. Disconnect AC input to inverter and confirm good battery voltage at inverter terminals (between 9 and 16V on 12V system). 5. The inverter or remote may need servicing. Contact an authorized service center. |
| Unknown Fault ## Fault XX |
The inverter has detected a fault that is not recognized by the remote. | 1. Perform a hard reset on the inverter. 2. If fault immediately returns, contact Tech Support to look up fault code number. |