Communication log posted by ridax "visualization":

FF 55 03 00 01 02 FA
FF 55 03 00 0F 00 EE
FF 55 03 00 0F 03 EB
FF 55 02 00 09 F5
FF 55 02 00 0D F1
FF 55 0E 00 13 00 00 00 0D 00 00 00 02 00 00 00 10 C0
FF 55 04 00 15 01 00 E6
FF 55 3C 00 18 F0 0D 00 06
00 10 30 57 7D 8A D6 0E 47 04 79 FA 27 A9 C8 2B E8 33
00 10 8B D0 DA 19 EE 0C 0F E5 6D 47 F8 FB 75 1C 18 EE
00 10 F9 29 21 16 40 91 32 5B 30 DA 61 64 9B 16 F5 F8 CD
FF 55 06 03 0E 04 00 FD 01 E7
FF 55 06 03 08 00 00 00 10 DF

FF 55 03 00 01 02 FA
FF 55 03 00 0F 00 EE
FF 55 03 00 0F 03 EB
FF 55 02 00 09 F5
FF 55 02 00 0D F1
FF 55 0E 00 13 00 00 00 0D 00 00 00 02 00 00 00 10 C0
FF 55 04 00 15 01 00 E6
FF 55 3C 00 18 F0 0D 00 06
00 10 76 FC 53 C7 0C 05 1F FD 15 BB 04 E3 17 85 D4 93
00 10 00 4F DB CF B4 A0 22 68 39 AF C0 73 7B DD 8A 34
00 10 87 FB C7 B4 98 59 40 D9 0F F4 78 AE A0 91 EA AE 05
FF 55 06 03 0E 04 00 00 01 E4
FF 55 06 03 08 00 00 00 10 DF

FF 55 03 00 01 02 FA
FF 55 03 00 0F 00 EE
FF 55 03 00 0F 03 EB
FF 55 02 00 09 F5
FF 55 02 00 0D F1
FF 55 0E 00 13 00 00 00 0D 00 00 00 02 00 00 00 10 C0
FF 55 04 00 15 01 00 E6
FF 55 3C 00 18 F0 0D 00 06
00 10 74 79 A7 28 69 DE 96 9D 80 DD A5 29 8E 25 B3 E5
00 10 64 AB B0 5F 96 CF 0D B5 13 79 79 9E AB 3E 09 C0
00 10 A0 D2 86 C2 D7 F0 B0 FB BB FA A8 E2 24 D4 D9 FA FD
FF 55 06 03 0E 04 00 FE 01 E6
FF 55 06 03 08 00 00 00 10 DF

FF 55 03 00 01 02 FA
FF 55 03 00 0F 00 EE
FF 55 03 00 0F 03 EB
FF 55 02 00 09 F5
FF 55 02 00 0D F1
FF 55 0E 00 13 00 00 00 0D 00 00 00 02 00 00 00 10 C0
FF 55 04 00 15 01 00 E6
FF 55 3C 00 18 F0 0D 00 06
00 10 16 1A C8 A1 93 77 54 4F 78 A2 0C 62 09 FD 19 27
00 10 A5 17 10 AC 77 55 54 D8 FF B5 89 F7 0B 24 22 0E
00 10 70 BC 62 AA 57 E6 8D D4 79 62 4C E7 4F 07 33 CE 27
FF 55 06 03 0E 04 00 81 01 63
FF 55 06 03 08 00 00 00 10 DF

So, assuming that a green commands are acks from the the V164, only one 'blue' byte (and checksum, of course) changes.

Just FYI