Solar Lattice

Symptom

User-set power limitation

ID
symptom:user-power-limit
IRI
https://solarlattice.org/kb/symptom/user-power-limit
Status
active
Also known as
LIMxxx% CODE:00, Power limitation

The inverter display shows LIMxxx% CODE:00. This means a user has set an output power limit on the inverter, and xxx is the power reduction percentage. LIM 100% means there is no limit. LIM 50% means output is capped at half of the nominal output power, so monitoring shows AC power flattened at that level. This is a configuration state, not a hardware fault. The fix is to check the limit value under Settings > Power Reduction, or under Settings > Power Limitation on TRIO units. Do not confuse it with the other limitation codes. CODE:01 is over-frequency derating, CODE:02 is the ten-minute average grid overvoltage derating, CODE:03 is an anti-islanding limit and CODE:04 is a limit caused by low grid voltage. The inverter can also reduce its own power because of high temperature, high input voltage or high input current. Those cases do not come from a percentage set by the user.

<!-- review notes

Claims

observed_as

c1 drafted · lead Inverter fault code display

On ABB/FIMER inverters the display shows LIMxxx% CODE:00, where xxx is the power reduction percentage. On TRIO units it appears with display symbol b6.

The message indicates that the user has set an output power limitation for the inverter.

c2 verified · fact Flat output below available power

AC output is held at the user-set percentage of nominal output power. LIM 100% means no limitation and LIM 50% means a limit of half the nominal output.

verified by: review-workflowverified on: 2026-10-23review note: support check: partial - Passages give the user-set limit and LIM percentage meanings, but say nothing about AC power staying flat while irradiance would support more, or about model_103.W and POAI behaviour.

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