I just installed this thermostat. It included quickly and seems to be communicating well. I can adjust setpoints, mode, etc. However, the fan state always displays "Off" regardless of what the furnace is doing at the time. Does anyone have any ideas on why this might be?

You have to turn on the Fan State and Fan Mode reporting bits in parameter 23.

 

https://products.z-wavealliance.org/products/2370/configs

Edited January 21, 20187 yr by andyf0

Thanks, Andy. Question, though - How do you set two parameter values for the same parameter? I must be missing something.

Thanks, Andy. Question, though - How do you set two parameter values for the same parameter? I must be missing something.

He is referring to a bitmask. In your device documentation it gives bit values for the different modes of parameter 23. 16 for Fan State and 32 for Fan Mode. In that instance you would enter 48 for the parameter value. You may want to see what the existing values are first as there may be other bits set. In that case, open up windows calculator, go into programmer mode, enter the existing and then OR it with 48 and then enter that as your new parameter value. You can add the values together but, technically, it is an OR operation.

 

Edit---

You can add the values together if the bits for 16 and 32 aren't already set, otherwise the addition will be wrong.

Edited January 21, 20187 yr by DrLumen

Got it. Thanks for the help.