[Multiple BUGs] - Not all speed options available [Model Phillips AC4236/10]

[ghost]

Overview - The slider problem

The device AC4236/10 has the following speed options (don't ask me why):

Speed options day mode:

• Automatic mode
• Speed option 1 (~ at 15% of full speed)
• Speed option 2 (~ at 40% of full speed)
• Speed option 3 | turbo mode (full speed)

Speed options night mode:

• Silent mode
• Allergic sleep mode

The "problem(s)"

• [ ] In the Homekit accessory just two speed options (out of 3, respectively 4 without night mode) are available via the fan speed slider. Speed option 1 & 2 can be controlled via the slider. However, at 100% fan speed (Homekit) the air purifier only works at speed option 2.
• [ ] Secondly, automatic mode cannot be started via the manual/automatic switch either. By using this switch nothing happens to the settings of the air purifier.
• [ ] As mentioned in previous bug reports Pre filter's & Active carbon filter's "Filter Life Level" exceeds the maximum level of 100, I don't personally care about this, but now that I'm here...
• [ ] I don't know if it's intended that only pm2.5 is shown in the Homekit air quality badged, maybe this is something to look into later. Again it's not an important feature I guess, but data is data 💯

Expected behavior Since Philips air purifiers have different speed options in older and newer models this may be the cause. At 80% or at least over 51% the air purifier should work at maximum speed. The automatic mode should be working via manual/automatic switch.

The solution

Activating debbuger mode shows the following API output of my device with Homekit device slider at 100%:

[DEBUG] Philips: {"name": "XXXX", "type": "AC4236", "modelid": "AC4236/14", "swversion": "Ms4406", "language": "EN", "DeviceVersion": "4.0.6", "range": "MarteHE", "Runtime": 7517029, "WifiVersion": "AWS_Philips_AIR@64.3", "ProductId": "XXXXX", "DeviceId": "XXXXX", "StatusType": "control", "ConnectType": "Online", "om": "2", "pwr": "1", "cl": false, "aqil": 100, "uil": "1", "uaset": "P", "mode": "M", "pm25": 1, "iaql": 1, "aqit": 7, "tvoc": 1, "ddp": "1", "rddp": "1", "err": 0, "fltt1": "A3", "fltt2": "none", "fltsts0": 662, "fltsts1": 4800, "fltsts2": 65535, "filna": "AC3036", "filid": "XXXXX", "flttotal0": 720, "flttotal1": 4800, "flttotal2": 65535}

At least for my device these are the correct strings:

Turbo mode (day):

{"name": "XXXX", ...., "om": "t", "pwr": "1", "cl": false, "aqil": 100, "uil": "1", "uaset": "P", "mode": "T", ...}

"om": "t",
"mode": "T"

Automatic mode (day):

{"name": "XXXX", ...., "om": "s", "pwr": "1", "cl": false, "aqil": 100, "uil": "1", "uaset": "P", "mode": "AG", ....}

"om": "s",
"mode": "AG"

Silent mode (night)

{"name": "XXXX", ...., "om": "s", "pwr": "1", "cl": false, "aqil": 0, "uil": "0", "uaset": "P", "mode": "S", ....}

"om": "s",
"mode": "S"

Allergic sleep mode (night)

{"name": "XXXX", ...., "om": "as", "pwr": "1", "cl": false, "aqil": 0, "uil": "0", "uaset": "P", "mode": "AS", ....}

"om": "as",
"mode": "AS"

Air quality

A further air quality value is "tvoc" (device has no temperature or humidity sensors).

Filter Life Level

As with everyone else, the problem with fltsts[0-2]life divisor arises for me. The solution has already been presented with flttotal[0-2]... My device does not have any second filter. So the assumption of @ideabucket could be correct.

Environment

• Node.js Version: v12.14.1
• iOS Version: v15.2.1

Conclusion

Please don't get me wrong, your plugin is great and super responsive. Thanks for all your kick-ass work in this project. 👍 🥇 Maybe you can implement these small improvements in your plugin e.g. by getting "type" or "modelid". Thanks a lot!

[ideabucket]

I've been trying to figure out how to model all the possible config states of recent purifier models using HomeKit's rather limited set of characteristics off and on for a while now, so I thought I'd chime in and braindump what I have so far.

As best I can break it down there are four different characteristics that need to be modeled:

• Mode: Day or Night
• Auto speed: On or Off (only meaningful when Mode == Day)
• Fan speed: 1, 2, Turbo (only meaningful when Mode == Day)
• Allergy Sleep mode: On or Off (only meaningful when Mode == Night).

One option would be to model all five of the speed options as percentages on the RotationSpeed characteristic:

• 20%: Sleep
• 40%: Allergy Sleep
• 60%: Day 1
• 80%: Day 2
• 100%: Day Turbo

Then you just need a TargetAirPurifierState characteristic to differentiate between Auto and Manual.

However I think this is a bad idea; first, it's brittle (what happens if there's a new model with more than three Day speeds?), and second, there's no way of communicating the speed scale in the Home app UI since there's no way I'm aware of to give RotationSpeed levels names.

IMO a better approach would be something similar to what's done in lukasroegner/homebridge-dyson-pure-cool, and expose extra switch accessories to control night mode, so you'd have:

• Auto or Manual (TargetAirPurifierState characteristic)
• Night mode (Switch service)
• Allergy Sleep in Night Mode (Switch service)
• Fan speed (RotationSpeed characteristic with three steps: 33%, 66%, and 100%)

This is what I plan to try to put together as a PR if I get the chance, but I'd welcome somebody else stealing the idea and doing all the work instead…

[andycylam]

My om is set to a and this plugin always says This plugin generated a warning from the characteristic 'Rotation Speed': characteristic value expected valid finite number and received "NaN" (number). See https://homebridge.io/w/JtMGR for more info.