Jeisha iobroker start fix

jeisha_start_fix.js

var pumpTimeout

/* Fix failing starts
 * When the heat pump starts with high power (> 50Hz) the pump is not set to 
 * a higher duty. The temperature will be immediately higher than the expected
 * reference temperature and the heat pump will stop within a few minutes.
 * 
 * This workaround will be triggered when all conditions are fulfilled
 * - Defrosting is not active
 * - Last value of Compressor_Freq == 0
 * - New value of Compressor_Freq > 0
 * - Pump duty is lower than maximum pump duty - 5%
 * 
 * The workaround sets the pump to max duty (SetPump == 1) for 15 minutes.
 * If the heat pump restarts within 15 minutes the old 15 minute timeout is cleared
 * and a new timeout is configured for SetPump == 0.
 */
on({id: "mqtt.0.heishamon.main.Compressor_Freq", change: "any"}, (obj) => {

    // Heat pump starts from idle mode (Compressor_Freq change 0 -> any value > 0)
    if(obj.oldState.val == 0 && obj.state.val > 0) {
        // Activate workaround only if not in defrost state
        const defrosting_state = getState("mqtt.0.heishamon.main.Defrosting_State");  
        if(defrosting_state.val == 0) {
            log("Jeisha is starting...");
            // Check if pump is already on high duty
            const pump_duty = getState("mqtt.0.heishamon.main.Pump_Duty");
            const max_pump_duty = getState("mqtt.0.heishamon.main.Max_Pump_Duty");
            if(pump_duty.val > max_pump_duty.val * 0.95) {
                log("Pump already on high duty (" + pump_duty + "/" + max_pump_duty + ")");
                return;
            }
            // clear old timer if Jeisha restarts within 15 minute window
            if(pumpTimeout != null) {
                log("Reset old pump duty timeout");
                clearTimeout(pumpTimeout)
            }
            // Set the pump to run on max duty for a few minutes to overcome the failing starts
            log("Set pump to max duty mode")
            setState("mqtt.0.heishamon.commands.SetPump", 1, true);
            // Activate a timer which resets the pump to normal mode after 15 minutes
            pumpTimeout = setTimeout(function() {
                log("Reset pump to normal mode");
                setState("mqtt.0.heishamon.commands.SetPump", 0, true);
            }, 15*60*1000);
        }
    }
});