Diagnostics

[medicalwei]

Daikin air cons has a diagnostic feature where remote sends out all codes but the AC unit long beeps when the diagnostic code matches.

See https://www.daikin.com/products/ac/services/error_codes for the feature.

The diagnostic code includes only one frame
11 da 27 00 01 XY 00 WW

Where X is

X	Actual Code
0	0
1	A
2	C
3	E
4	H
5	F
6	J
7	L
8	P
9	U
A	9
B	8
C	7
D	6
E	5
F	4

(Note that A-F is a guess from the manual. Not verified)

Where Y is

Y	Actual Code
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
A	A
B	H
C	C
D	J
E	E
F	F

Where WW is the checksum