diff --git a/examples/LGACSendDemo/LGACSendDemo.ino b/examples/LGACSendDemo/LGACSendDemo.ino
index 66d5025..da5db37 100644
--- a/examples/LGACSendDemo/LGACSendDemo.ino
+++ b/examples/LGACSendDemo/LGACSendDemo.ino
@@ -10,6 +10,11 @@ IRrecv irrecv (RECV_PIN);
 const int AC_TYPE  = 0;
 // 0 : TOWER
 // 1 : WALL
+//
+
+int AC_HEAT = 0;
+// 0 : cooling
+// 1 : heating
 
 int AC_POWER_ON    = 0;
 // 0 : off
@@ -27,6 +32,8 @@ int AC_FLOW        = 1;
 // 1 : mid
 // 2 : high
 // if AC_TYPE =1, 3 : change
+//
+
 
 const int AC_FLOW_TOWER[3] = {0, 4, 6};
 const int AC_FLOW_WALL[4]  = {0, 2, 4, 5};
@@ -54,7 +61,14 @@ void ac_activate(int temperature, int air_flow)
   int AC_MSBITS1 = 8;
   int AC_MSBITS2 = 8;
   int AC_MSBITS3 = 0;
-  int AC_MSBITS4 = 0;
+  int AC_MSBITS4 ;
+  if ( AC_HEAT == 1 ) {
+    // heating
+    AC_MSBITS4 = 4;
+  } else {
+    // cooling
+    AC_MSBITS4 = 0;
+  }
   int AC_MSBITS5 = temperature - 15;
   int AC_MSBITS6 ;
 
@@ -131,13 +145,13 @@ void setup()
 
   Serial.println("  - - - T E S T - - -   ");
 
-/* test
-  ac_activate(25, 1);
-  delay(5000);
-  ac_activate(27, 2);
-  delay(5000);
+  /* test
+    ac_activate(25, 1);
+    delay(5000);
+    ac_activate(27, 2);
+    delay(5000);
 
-*/  
+  */
 }
 
 void loop()
@@ -149,11 +163,11 @@ void loop()
   ac_activate(27, 0);
   delay(5000);
 
-  
+
   if ( r != o_r) {
 
     /*
-    # a : mode or temp    b : air_flow, temp, swing, clean
+    # a : mode or temp    b : air_flow, temp, swing, clean, cooling/heating
     # 18 ~ 30 : temp      0 ~ 2 : flow // on
     # 0 : off             0
     # 1 : on              0
diff --git a/examples/LGACSendDemo/LGACSendDemo.md b/examples/LGACSendDemo/LGACSendDemo.md
index 1bff51f..62c7073 100644
--- a/examples/LGACSendDemo/LGACSendDemo.md
+++ b/examples/LGACSendDemo/LGACSendDemo.md
@@ -1,35 +1,93 @@
-1) Sample raw code : https://gist.github.com/chaeplin/ab2a7ad1533c41260f0d
-2) send raw code : https://gist.github.com/chaeplin/7c800d3166463bb51be4
+=== decoding for LG A/C ====
+- 1) remote of LG AC has two type of HDR mark/space, 8000/4000 and 3100/10000 
+- 2) HDR 8000/4000 is decoded using decodeLG(IRrecvDumpV2) without problem
+- 3) for HDR 3100/10000, use AnalysIR's code : http://www.analysir.com/blog/2014/03/19/air-conditioners-problems-recording-long-infrared-remote-control-signals-arduino/
+- 4) for bin output based on AnalysIR's code : https://gist.github.com/chaeplin/a3a4b4b6b887c663bfe8
+- 5) remove first two byte(11)
+- 6) sample rawcode with bin output : https://gist.github.com/chaeplin/134d232e0b8cfb898860
 
 
 === *** ===
+- 1) Sample raw code : https://gist.github.com/chaeplin/ab2a7ad1533c41260f0d
+- 2) send raw code : https://gist.github.com/chaeplin/7c800d3166463bb51be4
+
+
+=== *** ===
+- (0) : Cooling or Heating
 - (1) : fixed 
 - (2) : fixed
 - (3) : special(power, swing, air clean)
-- (4) : change air flow, temperature
+- (4) : change air flow, temperature, cooling(0)/heating(4)
 - (5) : temperature ( 15 + (5) = )
 - (6) : air flow
 - (7) : crc ( 3 + 4 + 5 + 6 ) & B00001111
 
-=== *** ===
 
-|       status   | (1)| (2)| (3)| (4)| (5)| (6)| (7)
-|----------------|----|----|----|----|----|----|----
-| on / 25 / mid  |1000|1000|0000|0000|1010|0010|1100
-| on / 26 / mid  |1000|1000|0000|0000|1011|0010|1101      
-| on / 27 / mid  |1000|1000|0000|0000|1100|0010|1110     
-| on / 28 / mid  |1000|1000|0000|0000|1101|0010|1111     
-| on / 25 / high |1000|1000|0000|0000|1010|0100|1110     
-| on / 26 / high |1000|1000|0000|0000|1011|0100|1111     
-| on / 27 / high |1000|1000|0000|0000|1100|0100|0000     
-| on / 28 / high |1000|1000|0000|0000|1101|0100|0001     
-| 1 up           |1000|1000|0000|1000|1101|0100|1001     
-| Cool power     |1000|1000|0001|0000|0000|1100|1101     
-| energy saving  |1000|1000|0001|0000|0000|0100|0101     
-| power          |1000|1000|0001|0000|0000|1000|1001            
-| flow/up/down   |1000|1000|0001|0011|0001|0100|1001     
-| up/down off    |1000|1000|0001|0011|0001|0101|1010     
-| flow/left/right|1000|1000|0001|0011|0001|0110|1011     
-| left/right off |1000|1000|0001|0011|0001|0111|1100     
-| Air clean      |1000|1000|1100|0000|0000|0000|1100     
-| off            |1000|1000|1100|0000|0000|0101|0001 
\ No newline at end of file
+°F = °C × 1.8 + 32
+°C = (°F − 32) / 1.8
+
+
+=== *** ===
+* remote / Korea / without heating
+
+|       status   |(0)| (1)| (2)| (3)| (4)| (5)| (6)| (7)
+|----------------|---|----|----|----|----|----|----|----
+| on / 25 / mid  | C |1000|1000|0000|0000|1010|0010|1100
+| on / 26 / mid  | C |1000|1000|0000|0000|1011|0010|1101      
+| on / 27 / mid  | C |1000|1000|0000|0000|1100|0010|1110     
+| on / 28 / mid  | C |1000|1000|0000|0000|1101|0010|1111     
+| on / 25 / high | C |1000|1000|0000|0000|1010|0100|1110     
+| on / 26 / high | C |1000|1000|0000|0000|1011|0100|1111     
+| on / 27 / high | C |1000|1000|0000|0000|1100|0100|0000     
+| on / 28 / high | C |1000|1000|0000|0000|1101|0100|0001
+|----------------|---|----|----|----|----|----|----|----    
+| 1 up           | C |1000|1000|0000|1000|1101|0100|1001 
+|----------------|---|----|----|----|----|----|----|----    
+| Cool power     | C |1000|1000|0001|0000|0000|1100|1101     
+| energy saving  | C |1000|1000|0001|0000|0000|0100|0101     
+| power          | C |1000|1000|0001|0000|0000|1000|1001            
+| flow/up/down   | C |1000|1000|0001|0011|0001|0100|1001     
+| up/down off    | C |1000|1000|0001|0011|0001|0101|1010     
+| flow/left/right| C |1000|1000|0001|0011|0001|0110|1011     
+| left/right off | C |1000|1000|0001|0011|0001|0111|1100 
+|----------------|---|----|----|----|----|----|----|----    
+| Air clean      | C |1000|1000|1100|0000|0000|0000|1100
+|----------------|---|----|----|----|----|----|----|----    
+| off            | C |1000|1000|1100|0000|0000|0101|0001 
+
+
+
+* remote / with heating 
+* converted using raw code at https://github.com/chaeplin/RaspAC/blob/master/lircd.conf 
+
+|       status   |(0)| (1)| (2)| (3)| (4)| (5)| (6)| (7)
+|----------------|---|----|----|----|----|----|----|----
+| on             | C |1000|1000|0000|0000|1011|0010|1101
+|----------------|---|----|----|----|----|----|----|----
+| off            | C |1000|1000|1100|0000|0000|0101|0001
+|----------------|---|----|----|----|----|----|----|----
+| 64  / 18       | C |1000|1000|0000|0000|0011|0100|0111
+| 66  / 19       | C |1000|1000|0000|0000|0100|0100|1000
+| 68  / 20       | C |1000|1000|0000|0000|0101|0100|1001
+| 70  / 21       | C |1000|1000|0000|0000|0110|0100|1010
+| 72  / 22       | C |1000|1000|0000|0000|0111|0100|1011
+| 74  / 23       | C |1000|1000|0000|0000|1000|0100|1100
+| 76  / 25       | C |1000|1000|0000|0000|1010|0100|1110
+| 78  / 26       | C |1000|1000|0000|0000|1011|0100|1111
+| 80  / 27       | C |1000|1000|0000|0000|1100|0100|0000
+| 82  / 28       | C |1000|1000|0000|0000|1101|0100|0001
+| 84  / 29       | C |1000|1000|0000|0000|1110|0100|0010
+| 86  / 30       | C |1000|1000|0000|0000|1111|0100|0011
+|----------------|---|----|----|----|----|----|----|----
+| heat64         | H |1000|1000|0000|0100|0011|0100|1011
+| heat66         | H |1000|1000|0000|0100|0100|0100|1100
+| heat68         | H |1000|1000|0000|0100|0101|0100|1101
+| heat70         | H |1000|1000|0000|0100|0110|0100|1110
+| heat72         | H |1000|1000|0000|0100|0111|0100|1111
+| heat74         | H |1000|1000|0000|0100|1000|0100|0000
+| heat76         | H |1000|1000|0000|0100|1001|0100|0001
+| heat78         | H |1000|1000|0000|0100|1011|0100|0011
+| heat80         | H |1000|1000|0000|0100|1100|0100|0100
+| heat82         | H |1000|1000|0000|0100|1101|0100|0101
+| heat84         | H |1000|1000|0000|0100|1110|0100|0110
+| heat86         | H |1000|1000|0000|0100|1111|0100|0111