Automated Home with Safety System and Fire Sensor

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

int flameSensorPin = 0; // input pin for flame sensor
int fR; // reading of the flame sensor
int buzzerPin=8; // pin assigned to buzzer
int tt=1023;
void setup(void) 
{  
  Serial.begin(9600); // starting the serial monitor
  pinMode(buzzerPin,OUTPUT); // output for the buzzer
   pinMode(7, OUTPUT); // output for the DC relay
} 
void loop(void) 
{ 
  fR = analogRead(flameSensorPin);  // reads the flamesensor pin

  
  if(fR<1023) //if loop for flame detected
           {
            
            digitalWrite(7, HIGH); //DC relay turned on
            digitalWrite(buzzerPin,HIGH); //buzzer turned on
            delay(1000); 
            digitalWrite(7, LOW); //DC relay turned on

            // initialize the LCD
  lcd.begin();

  // Turn on the blacklight and print a message.
  lcd.backlight();
  lcd.print("LCD is Working");
              
                         }
else                           // incase no fire detected
          {
           digitalWrite(buzzerPin,LOW);
           digitalWrite(7, LOW);   
           delay(1000);
                        }

 Serial.print("Analog reading = "); 
 Serial.println(fR); // the raw analog reading delay(1000); 
 delay(500);
}