#include <IRremote.hpp>
void setup() {
    Serial.begin(9600);
    IrSender.begin(21); 
}
void loop() {
    IrSender.sendSamsungLG(0x2c, 0x17, 1);
    delay(3000);
    IrSender.sendPulseDistanceWidth_P(&SamsungLGProtocolConstants, 0xe8172c2c, 32, 1);
    delay(10000);
}

Protocol=Samsung Address=0x2C Command=0x17 Raw-Data=0xE817002C 32 bits LSB first
Send with: IrSender.sendSamsung(0x2C, 0x17, <numberOfRepeats>);

Protocol=SamsungLG Address=0x2C Command=0x17 Repeat gap=166800us
Send with: IrSender.sendSamsungLG(0x2C, 0x17, <numberOfRepeats>);

Protocol=Samsung Address=0x2C Command=0x17 Raw-Data=0xE8172C2C 32 bits LSB first
Send with: IrSender.sendSamsung(0x2C, 0x17, <numberOfRepeats>);

Protocol=SamsungLG Address=0x2C Command=0x17 Repeat gap=163450us
Send with: IrSender.sendSamsungLG(0x2C, 0x17, <numberOfRepeats>);