Avoid Delay

Solved
2 
void bomba()
{ sensors.requestTemperatures();
float TempE = sensors.getTempCByIndex(1);
float TempS = sensors.getTempCByIndex(0);

if (TempS < (3 + TempE))
{ int A = TempS;
int B = TempS;
if (B <= A)
{
digitalWrite (RELAY, LOW);
}
}

if (TempS > (4 + TempE))
{ int C = TempS;
int D = TempS;
if (D <= C)
{
void setup()
{
pinMode(12, OUTPUT);

Serial.begin(9600);

sensors.begin();

Blynk.begin(auth, ssid, pass);

timer.setInterval(1000L, myTimerEvent);
timer.setInterval(2500L, bomba);
}

void loop()
{
Blynk.run();
timer.run();
}