Change HVAC Fan to "Cycle" if outside temperature within ~5 degrees of inside

Other Devices & Integrations Climate Control & Temperature Sensors
1

I’m not familiar enough with Luup to write the code here…

I’m just really hoping someone has already done this and I copy it into my system.

Goal:
If the outside (weather) temperature is within a set number of degrees, I’d like my HVAC fan to change modes to “cycle”.

Reason:
Due to the close temperature, neither my heat or a/c will end up running very much - which is great. However, the air tends to get a bit stagnant, plus the longer this goes, the greater the difference in temperature between upstairs and downstairs. Moving the air around will help with both.

Note:
I have the Trane z-wave thermostat (TZEMT400BB3) and at this point can’t get the command of “cycle” to take effect from issuing the command. Planning on calling help desk today to see if anything can fix that.

2

It looks like it would take a script to compare indoor and outdoor temps, but I see that fan mode changes aren’t available in scene configuration.

Bummer. Would be a great feature for those who have ERVs and whole home humidifiers.

3

You can use PLEG to do this easily.

Both PLEG and Scenes have access to the Fan Mode control via the Advanced tab.

See:
http://wiki.micasaverde.com/index.php/Luup_UPnP_Variables_and_Actions

Search for HVAC_FanOperatingMode1 for values of Fan Mode.

4

Hi, I am not at all familiar with Pleg code or Lua. I’d like to cycle fans on for about 3 hours, and off for 3 hours. I have the CT100 and am able to access temp, status (heat or cool) and humidity.
I’m using version 1.7.569 with the new UI so I am not sure if that is different.

Assuming limited to no knowledge, can you tell me how to do this?

Thanks!

Paul

5

[quote=“Paulb4333, post:4, topic:186934”]Hi, I am not at all familiar with Pleg code or Lua. I’d like to cycle fans on for about 3 hours, and off for 3 hours. I have the CT100 and am able to access temp, status (heat or cool) and humidity.
I’m using version 1.7.569 with the new UI so I am not sure if that is different.

Assuming limited to no knowledge, can you tell me how to do this?

Thanks!

Paul[/quote]

PLEG is a plugin not code. Lua can be called code. PLEG is easier then LUA but is not a push one button and your done deal.

I suggest you start here. http://forum.micasaverde.com/index.php/topic,21603.0.html

In the first post there is a PDF called “PLEG BASICS” that gives a little headstart

Get both pieces of PLEG installed and start testing it out, when you run into a bind you post your “STATUS” report in the forum and someone can help fill in what ever is missing.

6

Thanks. Will give it a shot.