diff --git a/roborock/devices/traits/a01/device_feature.py b/roborock/devices/traits/a01/device_feature.py
index 001ee3c91..3290833d7 100644
--- a/roborock/devices/traits/a01/device_feature.py
+++ b/roborock/devices/traits/a01/device_feature.py
@@ -143,10 +143,13 @@
     }
 )
 
-# Devices known to lack DEFAULT_SETTING (DP 225).
+# Devices known to lack DEFAULT_SETTING (DP 225). These models have a softener
+# compartment but never answer the DP 225 query, so requesting it stalls the
+# force-load until it times out.
 _UNSUPPORTED_DEFAULT_SETTING: frozenset[str] = frozenset(
     {
         "roborock.wm.a63",  # H1
+        "roborock.wm.a90",  # H1 Lite / H1 Neo
     }
 )
 
@@ -250,7 +253,7 @@ def supports_feature_bits(model: str | None) -> bool:
 
 
 def supports_default_setting(model: str | None) -> bool:
-    """H1 (a63) does not support DP 225 even though it has a softener compartment."""
+    """H1 (a63) and H1 Lite (a90) do not support DP 225 despite having a softener compartment."""
     if model is None:
         return True  # conservative: assume yes
     return model not in _UNSUPPORTED_DEFAULT_SETTING
diff --git a/tests/devices/traits/a01/test_device_feature.py b/tests/devices/traits/a01/test_device_feature.py
index 75d92b271..fcc293b1d 100644
--- a/tests/devices/traits/a01/test_device_feature.py
+++ b/tests/devices/traits/a01/test_device_feature.py
@@ -11,18 +11,20 @@
     [
         ("roborock.wm.a63", False),  # H1
         ("roborock.wm.a102", True),  # H1 Overseas
-        ("roborock.wm.a90", True),  # H1 Lite
+        ("roborock.wm.a90", False),  # H1 Lite / H1 Neo
+        ("roborock.wm.a91", True),  # H1 Lite Overseas
         (None, True),  # unknown model: assume supported
     ],
 )
 def test_supports_default_setting(model: str | None, expected: bool) -> None:
-    """DP 225 is unsupported on H1 (a63) only."""
+    """DP 225 is unsupported on H1 (a63) and H1 Lite (a90)."""
     assert supports_default_setting(model) is expected
 
 
-def test_force_load_omits_default_setting_for_h1() -> None:
-    """H1 (a63) has a softener compartment but must not be queried for DP 225."""
-    dp_list = build_force_load_dp_list("roborock.wm.a63")
+@pytest.mark.parametrize("model", ["roborock.wm.a63", "roborock.wm.a90"])
+def test_force_load_omits_default_setting_for_h1(model: str) -> None:
+    """H1 variants have a softener compartment but must not be queried for DP 225."""
+    dp_list = build_force_load_dp_list(model)
 
     assert RoborockZeoProtocol.DEFAULT_SETTING not in dp_list
     # The remaining softener DPs are still queried.