Design for comfort mode and switch for a Mitsubishi air conditioner

[floris74]

@waltervl, thanks, i was to enthusiastic so i wrote it in Dutch. changed it.

Hi, I thought I’d share a small DIY project.

I have multiple air conditioners in my house, used for both heating and cooling, and for multiple users. These users are often away, so in that case their airco obviously doesn’t need to be on.

There are two scripts:

Airco Eettafel Operation Control

Determines HOW the airco should operate: mode (heating, cooling), fan speed, swing mode, etc.

If the temperature is within the comfort zone, the airco will not turn on.

Allows fine-tuning of setpoint, fan speed and swing mode.

Whether the airco is allowed to run at all is handled by the Airco Eettafel Power Control script.

Code: Select all

-- =========================================================
-- Airco Eettafel - OPERATION CONTROL
------------------------------------------------------------
-- Bepaalt HOE de airco moet werken, in welke modus (verwarmen, koelen, fan speed etc)
-- Als de temperatuur in de comfortzone zit, gaat de airco niet aan
-- Zorg voor finetuning qua setpoint en fan en swing modus 
-- OF de airco moet werken, zie Airco Eettafel Power Control script

-- =========================
-- CONFIGURATIE
-- =========================
local IDX = {
    temp        = 3991, -- Temperatuur
    comfort     = 5268, -- Airco Comfort schakelaar (dummy, schakelaar voor de ruimte indien comfort gewenst)
    setpoint    = 5259, -- Airco Target Setpoint (gewenste temperatuur)
    operation   = 5257, -- Airco Operation Mode (welke HVAC functie, warmen, koelen etc)
    fan         = 5260, -- Airco Fan Mode (Ventilator snelheid)
    swingUD     = 5261, -- Airco Swing Mode Up/Down (blaasrichting omhoog/omlaag, auto)
    swingLR     = 5262, -- Airco Swing Mode Left/Right (optioneel, blaasrichting links/rechts, rechtdoor)
    aircoPower  = 5258  -- Airco Power (airco aan/uit schakelaar) 
}

return {
    on = {
        devices = {
            IDX.temp,
            IDX.comfort
        }
    },

    execute = function(domoticz)

        local temp     = domoticz.devices(IDX.temp).temperature
        local comfort  = domoticz.devices(IDX.comfort).state
        local airco    = domoticz.devices(IDX.aircoPower)

        if comfort == 'Off' then
            domoticz.log('Airco Operation | Comfort UIT', domoticz.LOG_DEBUG)
            return
        end

        local setpoint  = domoticz.devices(IDX.setpoint)
        local operation = domoticz.devices(IDX.operation)
        local fan       = domoticz.devices(IDX.fan)
        local swingUD   = domoticz.devices(IDX.swingUD)

        domoticz.log('Airco Operation | Temp=' .. temp, domoticz.LOG_INFO)

        -- =========================
        -- VERWARMEN
        -- =========================
        if temp < 16.5 then
            if airco.state == 'Off' then airco.switchOn() end
            setpoint.updateSetPoint(20)
            operation.setLevel(21) -- Heat
            fan.setLevel(30)
            swingUD.setLevel(30)

        elseif temp >= 16.5 and temp < 19.5 then
            if airco.state == 'Off' then airco.switchOn() end
            setpoint.updateSetPoint(20)
            operation.setLevel(20)
            fan.setLevel(20)
            swingUD.setLevel(30)

        -- =========================
        -- COMFORTZONE → niets doen
        -- =========================
    
        -- =========================
        -- KOELEN
        -- =========================
        elseif temp > 21.5 and temp <= 26.5 then
            if airco.state == 'Off' then airco.switchOn() end
            setpoint.updateSetPoint(24)
            operation.setLevel(50) -- Cool
            fan.setLevel(50)
            swingUD.setLevel(60)

        elseif temp > 26.5 then
            if airco.state == 'Off' then airco.switchOn() end
            setpoint.updateSetPoint(25)
            operation.setLevel(50)
            fan.setLevel(50)
            swingUD.setLevel(60)
        end
    end
}

Airco Eettafel Power Control
-- ============================================================
-- Airco Eettafel – POWER CONTROL

-- Determines IF the airco is allowed to turn on
-- HOW the airco operates → see Airco Eettafel Operation Control script

-- Logic (priority high → low):
-- 1. Frost protection (always active)
-- 2. Comfort OFF → airco OFF
-- 3. If the temperature is within the comfort zone, the airco will not turn on
-- 4. Presence (at least one person present)
-- 5. God Mode (presence override)
-- ============================================================

Code: Select all

-- ============================================================
-- Airco Eettafel - POWER CONTROL
-- ------------------------------------------------------------
-- Bepaalt OF de airco aan mag/gaat
-- HOE de airco werkt → zie Airco Eettafel Operation Control script

-- Logica (prioriteit hoog → laag):
-- 1. Vorstbeveiliging (altijd actief)
-- 2. Comfort UIT → airco UIT
-- 3. Als de temperatuur in de comfortzone zit, gaat de airco niet aan
-- 4. Presence (minstens 1 persoon aanwezig)
-- 5. God Mode (override presence)
-- ============================================================

-- =========================
-- CONFIGURATIE
-- =========================
local IDX = {
    -- metingen en bediening
    temp        = 3991,   -- Thermometer van de ruimte
    comfort     = 5268,   -- Airco Comfort schakelaar voor de ruimte
    aircoPower  = 5258,   -- Airco Power, aan/uit van de ruimte

    -- Presence, minimaal 1 van onderstaande moet thuis zijn
    -- PAS NAMEN AAN IN HET SCRIPT BIJ 
        --return
        -- execute
        
    floris      = 5272,   -- Aanwezigheid Floris
    suzanne     = 5273,   -- Aanwezigheid Suzanne
    -- ben       = 5274,   -- ← makkelijk toe te voegen, voeg ook toe bij return en execute 

    -- Override, ook al is er niemand thuis, Godmode aan, airco gaat aan indien nodig
    godmode     = 5286    -- God Mode
}

local MIN_TEMP   = 13.5   -- Vorstbeveiliging aan bij < 13.5
local HYSTERESIS = 1.0    -- Uit bij >= 14.5
local COMFORT_MIN = 19.5
local COMFORT_MAX = 21.5

-- =========================
-- SCRIPT
-- =========================
return {
    on = {
        devices = {
            IDX.temp,
            IDX.comfort,
            IDX.floris,
            IDX.suzanne,
            -- IDX.ben, 
            IDX.godmode
        }
    },

    execute = function(domoticz)

        local temp     = domoticz.devices(IDX.temp).temperature
        local comfort  = domoticz.devices(IDX.comfort).state
        local airco    = domoticz.devices(IDX.aircoPower)

        local floris   = domoticz.devices(IDX.floris).state == 'On'
        local suzanne  = domoticz.devices(IDX.suzanne).state == 'On'
        --         local ben  = domoticz.devices(IDX.ben).state == 'On'
        local godmode  = domoticz.devices(IDX.godmode).state == 'On'

        local someoneHome = floris or suzanne -- or ben

        domoticz.log(
            string.format(
                'Airco Power | Temp=%.1f | Comfort=%s | Home=%s | GodMode=%s | Airco=%s',
                temp,
                comfort,
                tostring(someoneHome),
                tostring(godmode),
                airco.state
            ),
            domoticz.LOG_DEBUG
        )

        -- ❄️ Vorstbeveiliging (altijd prioriteit)
        if temp < MIN_TEMP then
            if airco.state == 'Off' then
                airco.switchOn()
                domoticz.log('Airco → ON (vorstbeveiliging)', domoticz.LOG_INFO)
            end
            return
        elseif temp >= MIN_TEMP + HYSTERESIS and comfort == 'Off' then
            if airco.state == 'On' then
                airco.switchOff()
                domoticz.log('Airco → OFF (vorst voorbij, comfort uit)', domoticz.LOG_INFO)
            end
            return
        end

        -- Comfort UIT = airco UIT
        if comfort == 'Off' then
            if airco.state == 'On' then
                airco.switchOff()
                domoticz.log('Airco → OFF (comfort uit)', domoticz.LOG_INFO)
            end
            return
        end

-- Comfort AAN → check presence / God Mode
if not (someoneHome or godmode) then
    if airco.state == 'On' then
        airco.switchOff()
        domoticz.log('Airco → OFF (niemand aanwezig)', domoticz.LOG_INFO)
    end
    return
end

-- Comfortzone → airco mag UIT blijven
if temp >= COMFORT_MIN and temp <= COMFORT_MAX then
    domoticz.log('Airco Power | Comfortzone, airco blijft uit', domoticz.LOG_DEBUG)
    return
end

-- Buiten comfortzone → airco AAN
if airco.state == 'Off' then
    airco.switchOn()
    domoticz.log('Airco → ON (buiten comfortzone)', domoticz.LOG_INFO)
end

    end
}

[waltervl]

Nice that you shared your project but this is an English written forum so please translate it to English!