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LG

LG WH21SL-18 air conditioner

Air Conditioners and Heaters · Climate

Not workingApple Home issuesCloud

1 report: 1 says it doesn’t work.

Reported with 1 integration: SmartThinQ LGE Sensors.

What people report

IntegrationIn Home AssistantIn Apple HomeWhat they saidSource
SmartThinQ LGE SensorsNot working CloudBroken in Home
Fan speed slider moves but does not change AC; no mid speed
HomeKit fan speed slider does nothing; users edit ac.py to lowercase enum as workaround
Saved copy
Describe the bug I have had my WH21SL-18 wired up with Home Assistant for about 6 months now and working well. However, the "fan speed" control exposed to HomeKit (using the below `configuration.yml` snippet) doesn't do anything. I can change the slider in HomeKit (even all the way down to 0%), but this change is not reflected in Home Assistant nor propagated to the air conditioner. [code] device.json Expected behavior Changing the fan speed in HomeKit should change the fan speed of the device (HomeKit uses a fan speed %, but other climate integrations will map these percentage rages to …

Excerpt saved from GitHub on 2026-10-23.

Issue #563 · 2023-06

Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.

In ReReHome

Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.

Identifiers

BrandLG
ModelWH21SL-18
CategoryAir Conditioners and Heaters