diff --git a/omotion/config.py b/omotion/config.py
index 4fc8ed89..17f6f58d 100644
--- a/omotion/config.py
+++ b/omotion/config.py
@@ -406,6 +406,10 @@ def merge_trigger_config(*overrides) -> dict:
 # EE or OPT safety FPGA STATUS could not be read for several polls in a row
 # (console-fw CFW-04). Clears once both read again with no fault.
 TRIG_INTERLOCK_SAFETY_UNKNOWN: int = 0x10
+# A safety limit named in the stored config was not loaded and verified: out of
+# range, not a settable register, write failed or read back wrong (console-fw
+# CFW-10). Cleared by the next config apply that succeeds.
+TRIG_INTERLOCK_LIMITS: int = 0x20
 TRIG_START_TIMER_FAILED: int = 0x80
 
 _TRIG_REFUSAL_REASONS = (
@@ -414,6 +418,7 @@ def merge_trigger_config(*overrides) -> dict:
     (TRIG_INTERLOCK_TEC, "TEC thermal trip (clears about 5 s after the TEC recovers)"),
     (TRIG_INTERLOCK_CONFIG, "console user config invalid or missing; running on defaults until a config is written"),
     (TRIG_INTERLOCK_SAFETY_UNKNOWN, "laser-safety FPGA status unreadable (EE/OPT not responding)"),
+    (TRIG_INTERLOCK_LIMITS, "a safety limit in the console config was not applied (out of range or failed read-back)"),
     (TRIG_START_TIMER_FAILED, "FSYNC timer failed to start"),
 )
 
diff --git a/tests/test_trigger_limits.py b/tests/test_trigger_limits.py
index 91f3a37e..a39b126f 100644
--- a/tests/test_trigger_limits.py
+++ b/tests/test_trigger_limits.py
@@ -23,6 +23,7 @@
     TRIG_INTERLOCK_CONFIG,
     TRIG_INTERLOCK_LASER_SAFETY,
     TRIG_INTERLOCK_SAFETY_UNKNOWN,
+    TRIG_INTERLOCK_LIMITS,
     TRIG_INTERLOCK_TEC,
     TRIG_START_TIMER_FAILED,
     TRIGGER_JSON_MAX,
@@ -126,7 +127,8 @@ def test_describe_trigger_refusal():
     assert "config invalid or missing" in describe_trigger_refusal(TRIG_INTERLOCK_CONFIG)
     assert "unknown" not in describe_trigger_refusal(TRIG_INTERLOCK_CONFIG | TRIG_INTERLOCK_TEC)
     assert "unreadable" in describe_trigger_refusal(TRIG_INTERLOCK_SAFETY_UNKNOWN)
-    assert "0x20" in describe_trigger_refusal(0x20)
+    assert "safety limit" in describe_trigger_refusal(TRIG_INTERLOCK_LIMITS)
+    assert "0x40" in describe_trigger_refusal(0x40)
     assert "no status byte" in describe_trigger_refusal(None)