Nest Binding WWN API unable to control fan duration

Openhab 3.4.0
Rpi 4
Nest Binding 3.4.0.

I am still using the Nest binding using the WWN method.

What I noticed is that I can no longer control the Fan Duration.

By default the binding will create the item as a Number:Time item and will show the supported run time selections 15mins to 8 hours. When Leaving at Number:Time the displayed number from the item is using the wrong unit.

Eg when selecting 15 mins, 15 s is displayed for the item.

Nest API error: Cannot set fan_timer_duration to the selected value. See API reference for allowed values.

The above error also shows in the log.

Reconfiguring the item as Number:Dimensionless gets rid of the error and seems to have the item displaying correctly. Selecting 1h shows 1h, 15 min = 15min etc.

But it appears the changes never make it to the API and vice versa.

Anyone else experiencing the same problem?

Hi, did you ever figure this out? I’m just about to embark on controlling my furnace fan to do some circulation at night to drop co2 levels, and I have a nest, and similar to you rpi4 with oh4.
Will check out WWN

Yeh. I just switched to an Ecobee. Nest never bothered to fix it.

WWN is dead.