The SAC9010QC/SAC12010QC uses a 36 bit code. Below you'll find a specification of what each of the bits do. The bits marked X are constant as far as I could figure out.
| Bit |
333333222222222211111111110000000000
543210987654321098765432109876543210
|
| Function |
XXXXXXXXXXQQPNMLKKKKJHHGFFFFEDCCBAAA |
| Function |
Bits |
Description |
Values |
| A |
0, 1 and 2 |
Mode |
| Value |
Description |
000 |
Auto |
001 |
Cool |
010 |
Dehumidify |
011 |
Fan |
100 |
Heat |
|
| B |
3 |
Power |
| Value |
Description |
0 |
Off |
1 |
On |
|
| C |
4, 5 |
Fan speed |
| Value |
Description |
00 |
Auto |
01 |
1 |
10 |
2 |
11 |
3 |
|
| D |
6 |
Swing |
| Value |
Description |
0 |
Off |
1 |
On |
|
| E |
7 |
Sleep |
| Value |
Description |
0 |
Off |
1 |
On |
|
| F |
8 to 11 |
Temperature |
Offset from 16°C, ranging from
16°C (0000) to 30°C (1110) |
| G, H, J, K |
12 to 19 |
Timer |
See Timer |
| L |
20 |
Humid |
| Value |
Description |
0 |
Off |
1 |
On |
|
| M |
21 |
Light |
| Value |
Description |
0 |
Off |
1 |
On |
|
| N |
22 |
Air ionizer |
| Value |
Description |
0 |
Off |
1 |
On |
|
| P |
23 |
Save |
| Value |
Description |
0 |
Off |
1 |
On |
|
| Q |
24, 25 |
Air |
| Value |
Description |
00 |
- |
01 |
Air 1 |
10 |
Air 2 |
|
The timer on/off state is indicated by address bit 15 (J). Bit 12 (G) is the half hour indicator. Bits 13 and 14 (H) of the address are the tens position of the 24 hour clock and bits 16 to 19 of the command (K) are the ones position of the 24 hour clock (essentially BCD encoding the time). The time is calculated by composing the HHKKKKG bits where H is the 'tens' part, K is the 'ones' part and G is the half-hour indicator (0 being 0, 1 being ½ an hour).
Let's take the following example:
000000000000000001111011010001001001
Meaning XXXXXXXXXXQQPNMLKKKKJHHGFFFFEDCCBAAA
Let's mask out the bits we're not interested in:
................01111011............
Meaning ................KKKKJHHG............
This gives us:
J HH KKKK G
1 01 0111 1
| |/ \ / |
| | \/ |
| 1 7 ½
|
Timer on (1)
Or: 17.5 hours.