LTC4015 not charging

Dear technical team,

I am running some test for an own designed PCB using LTC4015. Everything looks fine, but the system is not able to charge batteries.

SYSTEM SPECS:

1) 12 cell lead acid configuration.

2) VIN = 29V

3) Rsnsi = Rsnsb = 3 miliohm

4) Stand by batteries voltage = approximately 26V

I am trying to run a charge test routine setting a voltage charge of 27.8 and a max current of 1A. Below I pasted the 74 register data for the LTC4015:

Address	Hex	Dec/Eng	Unit
1	0x0	0
2	0x0	0
3	0x0	0
4	0x0	0
5	0x0	0
6	0x0	0
7	0x0	0
8	0x0	0
9	0x0	0
10	0x0	0
11	0x0	0
12	0x0	0
13	0x0	0
14	0x0	0
15	0x0	0
16	0x0	0
17	0x0	0
18	0x0	0
19	0x0	0
20	0x10	16
21	0x2F	47
22	0x0	0
23	0x0	0
24	0x0	0
25	0x0	0
26	0x2	2
27	0x1A	26
28	0x889	2185
29	0xFFFF	65535
30	0x0	0
31	0xFFFF	65535
32	0xFFFF	65535
33	0xFFFF	65535
34	0xFFFF	65535
35	0xFFFF	65535
36	0xFFFF	65535
37	0xFFFF	65535
38	0xFFFF	65535
39	0xFFFF	65535
40	0xFFFF	65535
41	0x0	0
42	0x8	8
43	0x1518	5400
44	0x0	0
45	0xFFFF	65535
46	0xFFFF	65535
47	0x0	0
48	0x0	0
49	0x0	0
50	0x0	0
51	0x0	0
52	0x200	512
53	0x0	0
54	0x0	0
55	0x0	0
56	0x0	0
57	0x22C7	8903
58	0x4239	26.08	V
59	0x44D9	29.05	V
60	0x44C6	29.01	V
61	0x21	0.016	A
62	0x67	0.05	A
63	0x3609	39.9	°C
64	0x2A70	9893	Ohm
65	0x0	0	Ohm
66	0x1	1
67	0x88C	2188
68	0x2	1	A
69	0x22	27.89	V
70	0x2F	8	A
71	0x4235	16949
72	0x0	0	A
73	0x0	0
74	0x1	1

Based in the status, system indicates a state of "absorb_charge", but power is not delivered. The measured voltage on the board is the same voltage reported for telemetry (shown in previous table)

During development phase, some I2C registers were written randomly. After that I re write them. For that reason some register has the value 0xFFFF. However I understand that registers are not used in lead acid mode.  

Thanks in advance