Purpose

This script will maintain thermostat between 19 and 21 degrees.

This script has been taken from here

Dependencies - hardware / software / operating system

This script will work on all type of hardware / software / operating system.

Domoticz Setup - switches, variables, version

Replace "consigne" with target temperature
Replace "hysteresis"
Replace "sonde" with temperature sensor
Replace "thermostat" with virtual thermostat switch
Replace "radiateur" with heating source sensor

Installation instructions

Copy this script in your domoticz\scripts\lua\ folder.

Script with comments

 -- Alexandre DUBOIS - 2014
 -- This script allows to maintain the temperatue between 19°C et 21°C when virtual
 -- 'Thermostat salon' is ON.
 	
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 ------ Start of edit section ------
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 local consigne = 20  --Température de consigne
 local hysteresis = 0.5 --Valeur seuil pour éviter que le relai ne cesse de commuter dans les 2 sens
 local sonde = 'Salon' --Nom de la sonde de température
 local thermostat = 'Thermostat salon' --Nom de l'interrupteur virtuel du thermostat
 local radiateur = 'Radiateur salon' --Nom du radiateur à allumer/éteindre
 --------------------------------
 -- End of edit section --
 --------------------------------
 	
 commandArray = {}
 --Oregon sensor 'Salon' send temperature every 40s. This will be the execution frequency of this script.
 if (devicechanged[sonde]) then
         local temperature = devicechanged[string.format('%s_Temperature', sonde)] --Temperature relevée dans le salon
     --On n'agit que si le "Thermostat" est actif
     if (otherdevices[thermostat]=='On') then
         print('-- Gestion du thermostat pour le salon --')
 	
         if (temperature < (consigne - hysteresis) ) then
             print('Allumage du chauffage dans le salon')
             commandArray[radiateur]='On'
 	
             elseif (temperature > (consigne + hysteresis)) then
                 print('Extinction du chauffage dans le salon')
             commandArray[radiateur]='Off'
 	
             end
         end
 end
 return commandArray

Example of use (if relevant) i.e. output files / screen displays

N/A

Thermostat control

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