LG Washer status unknown when powered off
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**Describe The Bug:**
<!-- A clear and concise description of what the bug is. --> 

HomeKit reports status unknown when washer is off. Also, washer lock and unlock do nothing even when the washer is on and the door is locked the status doesn’t change to lock on HomeKit.

**To Reproduce:**
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**Expected behavior:**
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**Logs:**

```
Show the Homebridge logs here (make sure DEBUG mode in `on`), remove any sensitive information.
```

**Plugin Config:**

```json
Show your Homebridge config.json here, remove any sensitive information.
```

**Screenshots:**
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**Environment:**

* **Plugin Version**:
* **Homebridge Version**: <!-- homebridge -V -->
* **Node.js Version**: <!-- node -v -->
* **NPM Version**: <!-- npm -v -->
* **Operating System**: <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker / hb-service -->

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