Troubleshooting
Error Messages
An error message is caused by a critical fault. In most cases when this occurs, the unit will shut down and the inverter’s ERROR LED (see page 11) will illuminate. See the system display manual for instructions on viewing errors. One or more messages will display yes in the MATE system display; Y in the MATE3. If a message says no (or N), it is not the cause of the error.
Error screens can only display errors; they cannot clear them. It is possible to clear an error by resetting the inverter. The inverter must be turned off, and then on, to reset it. Other possible steps are shown below (although it is still necessary to reset the inverter).
Table 5 Error Troubleshooting
Message | Message | Causes |
(MATE) | (MATE3) |
|
|
|
|
low ac | Low Output | Inverter’s AC regulation cannot be |
output | Voltage | maintained under high load conditions. |
voltage |
|
|
|
|
|
stacking | Stacking Error | Programming problem among stacked |
error |
| units. (Often occurs if there is no master.) |
detected |
| Can also occur when ac output backfeed |
|
| occurs. |
|
|
|
inverter | Over | Inverter has exceeded its maximum |
overtemp | Temperature | allowed operating temperature. |
|
|
|
low battery | Low Battery V | DC voltage is below Low Battery |
voltage |
| (LBCO) set point. |
|
| This error can be triggered by other |
|
| causes. It can appear along with low ac |
|
| output voltage, ac output shorted, or ac |
|
| output backfeed errors. |
|
|
|
phase loss | Phase Loss | A slave was ordered to transfer to AC by |
error |
| the master, but no AC is present. The unit |
|
| continues inverting. This is the only |
|
| “Error” that is not accompanied by a |
|
| shutdown. |
|
|
|
high battery | High Battery V | DC voltage exceeded acceptable level |
voltage |
| (specified on page 13). |
|
|
|
ac output | AC Output | Inverter exceeded its maximum surge |
shorted | Shorted | current due to severe overload. |
|
|
|
ac output | AC Output | Usually indicates another AC power |
backfeed | Backfeed | source (out of phase with the inverter) |
|
| was connected to the unit’s AC output. |
|
|
|
Possible Remedy
Check loads and measure current draw. Remove loads as necessary.
Check stacking programming and designation of master. (See page 25.)
Check for output backfeed from external source. Disconnect output if necessary.
Shut off the inverter to reduce the temperature, or add external cooling.
If this error accompanies other errors, treat those conditions as appropriate.
If it occurs by itself: Recharge the batteries. The error will clear automatically if an external AC source is connected and the inverter’s charger comes on.
Check the AC voltage on the inverter input terminals. If AC voltage is not present, problem is external. If AC voltage is present, the unit may be damaged. Contact OutBack Technical Support (see inside front cover of this manual).
Check the charging source. This problem is usually the result of external charging. This error will clear automatically if conditions are removed.
Check the loads and wiring. This issue is usually the result of a wiring problem (a short), as opposed to a
Disconnect the AC OUT wires from the inverter. Check the wires (not the inverter) with an AC voltmeter. If an AC source is present, shut it off.
37 |