playing with delays to turn off trane air conditioner

/*
 * IRremote: IRsendDemo - demonstrates sending IR codes with IRsend
 * An IR LED must be connected to Arduino PWM pin 3.
 * Version 0.1 July, 2009
 * Copyright 2009 Ken Shirriff
 * http://arcfn.com
 */


#include <IRremote.h>

IRsend irsend;

int delayTime = 200;
int maxMs = 525;

bool delayBetween = true;
int delayChallenge = 0;

void setup()
{
  pinMode(4, OUTPUT); //set 4 and 5 to high/low so the IR led can run right off the board
  pinMode(5, OUTPUT);
  digitalWrite(4, HIGH);
  digitalWrite(5, LOW);

  pinMode(12, OUTPUT); // Set 12 and 13 to high/low so the IR led can run right off the board
  pinMode(13, OUTPUT);
  digitalWrite(12, 1);
  digitalWrite(13, 0);

//  pinMode(8, INPUT);
//  pinMode(9, INPUT);

  Serial.begin(115200);
  Serial.println("If you see this, you're ready to go!");
  Serial.println("I\'ll wait 5 seconds.");
  for (int i = 0; i < 10; i++) {
    Serial.print("Waiting ");
    Serial.print(i/2);
    Serial.println("seconds before starting...");
    delay(500);
  }
}

void loop() {

  for (int i = 0; i < maxMs; i++) {
    int tmpDelay = 0;
    switch (delayChallenge) {
      case 0: // delay same ms as between sets, between commands
        tmpDelay = i;
        break;
      case 1: // delay random ms between commands
        tmpDelay = random(0, maxMs);
        break;
    }

    switch (delayChallenge) {
      case 0: // delay same ms as between sets, between commands
        Serial.print("[Delaying same ms as between sets, between commands] ");
        break;
      case 1: // delay random ms between commands
        Serial.print("[Delaying random ms (between 0 and ");
        Serial.print(maxMs);
        Serial.print("ms between commands] ");
        break;
      case 3: // no delay between commands
        Serial.print("[Not delaying between commands] ");
        break;
    }

    Serial.print("[Max delay: ");
    Serial.print(maxMs);
    Serial.print("ms] ");
    Serial.print("[Sets left: ");
    Serial.print(maxMs-i);
    Serial.print("] ");
    Serial.print("[Delay: ");
    Serial.print(tmpDelay);
    Serial.println("ms] [Command 1] EMITTING NEC 8CE0043A.");
    irsend.sendNEC(0x8CE0043A, 32); //TURN AIR OFF

    delay(tmpDelay);

    switch (delayChallenge) {
      case 0: // delay same ms as between sets, between commands
        Serial.print("[Delaying same ms as between sets, between commands] ");
        break;
      case 1: // delay random ms between commands
        Serial.print("[Delaying random ms (between 0 and ");
        Serial.print(maxMs);
        Serial.print("ms between commands] ");
        break;
      case 3: // no delay between commands
        Serial.print("[Not delaying between commands] ");
        break;
    }

    Serial.print("[Max delay: ");
    Serial.print(maxMs);
    Serial.print("ms] ");
    Serial.print("[Sets left: ");
    Serial.print(maxMs-i);
    Serial.print("] ");
    Serial.print("[Delay: ");
    Serial.print(i);
    Serial.println("ms] [Command 2] EMITTING NEC 8CE0043E.");
    irsend.sendNEC(0x8CE0043E, 32); //TURN AIR OFF
    delay(i);
  }

  switch (delayChallenge) {
    case 0: // delay same ms as between sets, between commands
      delayChallenge = 1;
      break;
    case 1: // delay random ms between commands
      delayChallenge = 2;
      break;
    case 3: // no delay between commands
      delayChallenge = 0;
      break;
  }
  Serial.println("Done with that set. Waiting 10 seconds and doing it again.");
  delay(10000); //10 second delay between each signal burst
  Serial.println("Here we go!");
}