Problem mit foteh ssr-40da und Tauchpumpe

#include "EspMQTTClient.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); // set the LCD address to 0x27 for a 16 chars and 2 line display
//#include "OneButton.h"
int Taster   =  14;
int Taster2  = 16;
int Relay    = 27;
int Pause   = 1000;
int ASensor1 = 34;
int ASensor2 = 35;
float Liter = 0;
boolean aLedEnabled = false;
boolean aButtonPressed = false;
//OneButton button(buttonPin, false);
unsigned long previousMillis = 0;
const long interval = 10000;

EspMQTTClient client(
  "*****",
  "*******",
  "192.*********",  // MQTT Broker server ip
  "MQTTUsername",   // Can be omitted if not needed
  "MQTTPassword",   // Can be omitted if not needed
  "TestClient",     // Client name that uniquely identify your device
  1883              // The MQTT port, default to 1883. this line can be omitted
);

void setup()
{
  Serial.begin(115200);

  // Optionnal functionnalities of EspMQTTClient :
  client.enableDebuggingMessages(); // Enable debugging messages sent to serial output
  client.enableHTTPWebUpdater(); // Enable the web updater. User and password default to values of MQTTUsername and MQTTPassword. These can be overrited with enableHTTPWebUpdater("user", "password").
  client.enableLastWillMessage("TestClient/lastwill", "I am going offline");  // You can activate the retain flag by setting the third parameter to true
}

// This function is called once everything is connected (Wifi and MQTT)
// WARNING : YOU MUST IMPLEMENT IT IF YOU USE EspMQTTClient
void onConnectionEstablished()
{
  // Subscribe to "mytopic/test" and display received message to Serial
  client.subscribe("mytopic/test", [](const String & payload) {
    Serial.println(payload);
  });

  // Subscribe to "mytopic/wildcardtest/#" and display received message to Serial
  client.subscribe("mytopic/wildcardtest/#", [](const String & topic, const String & payload) {
    Serial.println("(From wildcard) topic: " + topic + ", payload: " + payload);
  });

  // Publish a message to "mytopic/test"
  client.publish("mytopic/test", "This is a message"); // You can activate the retain flag by setting the third parameter to true

  // Execute delayed instructions
  client.executeDelayed(5 * 1000, []() {
    client.publish("mytopic/wildcardtest/test123", "This is a message sent 5 seconds later");
  });

  pinMode(27, OUTPUT);

  pinMode(Taster, INPUT_PULLUP  );
  pinMode(Taster2, INPUT_PULLUP); // Taster PIN = Eingang
  pinMode(ASensor1, INPUT);
  pinMode(ASensor2, INPUT);
  lcd.init();                      // initialize the lcd
  lcd.backlight();
  delay(100);

}



void loop()
{
  client.loop();
  if (digitalRead(Taster) == HIGH)
  {
    clickedIt();
  }
  delay(100);
  if (digitalRead(Taster2) == HIGH)
  {
    doubleClickedIt();
  }
  delay(50);
  if (Liter <= 0)Liter = 0;
  int mittelwert = mittelwertBerechnen();
  // Display wird komplett geleert
  int mittel = map(mittelwert, 774, 2500,   100, 0);
  lcd.setCursor(0, 0);   // Position ab wo wir etwas überschreiben möchten
  lcd.print(Liter);
  lcd.setCursor(6, 0);
  lcd.print("liter");
  lcd.setCursor(0, 1);
  lcd.print("    ");
  lcd.setCursor(0, 1);
  lcd.print(map(mittelwert, 774, 2500,   100, 0));
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;
    String stringone = String(mittel);
    client.publish("Gieskanne/mittelwert", stringone);
    // function2
  }

  if (mittel <= 44)
  {
    //

     Giesen();
  }

}

void clickedIt() {
  Liter = Liter + 0.25;


}

void doubleClickedIt() {
  Liter = Liter - 0.25;

}


int mittelwertBerechnen()
{

  int Sensor1 = 0;
  int Sensor2 = 0;
  int Sensor3 = 0;
  int Sensor4 = 0;
  int ergebnis = 0;
  for (int i = 0; i < 10; i++)
  {
    Sensor1 = Sensor1 + analogRead(ASensor1);
    Sensor2 = Sensor2 + analogRead(ASensor2);
    //Sensor3 = Sensor3 + analogRead(A2);
    //Sensor4 = Sensor4 + analogRead(A3);
    delay(10);
  }
  Sensor1 = Sensor1 / 10;
  Sensor2 = Sensor2 / 10;
  ergebnis = Sensor1 + Sensor2 / 2;
  delay(100);
  Serial.println(ergebnis);
  Serial.println("Sensor1:");
  Serial.println(Sensor1);
  delay(1000);
  Serial.println(",");
  Serial.println("Sensor2:");
  Serial.println(Sensor2);
  Serial.println(",");
  delay(1000);
  
  return ergebnis;
}
void Giesen()
{
  Serial.println("Giesen");
  digitalWrite(27, HIGH);
  delay(100);
  client.publish("Gieskanne/Fertig", "Giesse");

  long Dauer = 1800000 * Liter;
  Serial.println(Dauer);
  delay(Dauer);
  Serial.println("Fertig");
  digitalWrite(27, LOW);
  client.publish("Gieskanne/Fertig", "Fertig");
  delay(100);



}```