If anybody is interested, Vistapool Hidrolife is possible to control directly through MODBUS/TCP IP converter ( I use this one ) or it can be any other available, so there is no need of Vistapool cloud anymore 
My working config file is below.
#---------------------------------------------------#
# HIDROLIFE control via MODBUS (no cloud) #
#---------------------------------------------------#
input_boolean:
modbus:
filtrace_mb_auto:
cycle1_on:
cycle2_on:
cycle3_on:
sensor:
- platform: modbus
registers:
- name: MBF_MEASURE_PH # pH mb
hub: bazen
slave: 1
register: 258
register_type: holding
data_type: uint
scale: 0.01
precision: 1
- name: MBF_PAR_PH1 #- horni hranice pH
hub: bazen
slave: 1
register: 1284
register_type: holding
data_type: uint
scale: 0.01
precision: 1
- name: MBF_PAR_PH2 # dolni hranice pH
hub: bazen
slave: 1
register: 1285
register_type: holding
data_type: uint
scale: 0.01
precision: 1
- name: MBF_MEASURE_TEMPERATURE # MBF_MEASURE_TEMPERATURE
hub: bazen
slave: 1
register: 262
register_type: holding
data_type: uint
unit_of_measurement: °C
scale: 0.1
precision: 1
- name: MBF_PH_STATUS # MBF_PH_STATUS - AL3, stav pH, peristaltika
hub: bazen
slave: 1
register: 263
register_type: holding
data_type: uint
- name: MBF_PAR_FILTRATION_STATE # MBF_PAR_FILTRATION_STATE /-READ ONLY / stav filtrace zap/vyp
hub: bazen
slave: 1
register: 1057
register_type: holding
data_type: uint
- name: MBF_PAR_FILT_MANUAL_STATE # MBF_PAR_FILT_MANUAL_STATE-stav filtrace zap/vyp
hub: bazen
slave: 1
register: 1043
register_type: holding
data_type: uint
- name: MBF_PAR_HEATING_TEMP # MBF_PAR_HEATING_TEMP cilova teplota vody pro vyhrivani
hub: bazen
slave: 1
register: 1046
register_type: holding
data_type: uint
unit_of_measurement: °C
- name: MBF_PAR_FILT_MODE # režim filtrace
hub: bazen
slave: 1
register: 1041
register_type: holding
data_type: uint
- name: MBF_RELAY_STATE # MBF_RELAY_STATE stav jednotlivych rele
hub: bazen
slave: 1
register: 270
register_type: holding
data_type: uint
- platform: template
sensors:
rezim_filtrace:
friendly_name: "Režim filtrace"
value_template: >-
{% if is_state('sensor.MBF_PAR_FILT_MODE', '0' ) %}
Manual
{% elif is_state('sensor.MBF_PAR_FILT_MODE', '1' ) %}
Auto
{% elif is_state('sensor.MBF_PAR_FILT_MODE', '2' ) %}
Topeni
{% elif is_state('sensor.MBF_PAR_FILT_MODE', '3' ) %}
Smart
{% elif is_state('sensor.MBF_PAR_FILT_MODE', '4' ) %}
Intelligent
{% else %}
???
{% endif %}
peristaltika:
friendly_name: "Peristaltika mb"
value_template: "{{ states('sensor.MBF_RELAY_STATE')|int // 1 % 2 }}"
filtrace:
friendly_name: "Filtrace mb"
value_template: "{{ states('sensor.MBF_RELAY_STATE')|int // 2 % 2 }}"
ohrev:
friendly_name: "Ohrev mb"
value_template: "{{ states('sensor.MBF_RELAY_STATE')|int // 64 % 2 }}"
stav_ph_1:
friendly_name: "stav ph 1"
value_template: "{{ states('sensor.MBF_PH_STATUS')|int // 1 % 2 * 1 }}"
stav_ph_2:
friendly_name: "stav ph 2"
value_template: "{{ states('sensor.MBF_PH_STATUS')|int // 2 % 2 * 2}}"
stav_ph_3:
friendly_name: "stav ph 3"
value_template: "{{ states('sensor.MBF_PH_STATUS')|int // 4 % 2 * 4}}"
ph1_ph2:
value_template: "{{ states('sensor.stav_ph_1')|int + states('sensor.stav_ph_2')|int + states('sensor.stav_ph_3')|int }}"
stav_ph:
friendly_name: "Stav ph"
value_template: >-
{% if is_state('sensor.ph1_ph2', '0' ) %}
OK
{% elif is_state('sensor.ph1_ph2', '1' ) %}
vysoké
{% elif is_state('sensor.ph1_ph2', '2' ) %}
nízké
{% elif is_state('sensor.ph1_ph2', '3' ) %}
AL3
{% elif is_state('sensor.ph1_ph2', '4' ) %}
vyšší
{% elif is_state('sensor.ph1_ph2', '5' ) %}
nižší
{% else %}
???
{% endif %}
filtrace_mb_num:
friendly_name: “Filtrace zap-vyp”
value_template: >
{% if is_state('input_boolean.filtrace_mb_auto', 'on') %} 1 {% else %} 0 {% endif %}
tepelne_cerpadlo_mb_num:
friendly_name: “Tepelne cerpadlo zap-vyp”
value_template: >
{% if is_state('input_boolean.filtrace_mb_auto', 'on') %} 3 {% else %} 4 {% endif %}
timer_1_mb:
value_template: "{{ states('input_select.cycle1_time') }}"
timer_2_mb:
value_template: "{{ states('input_select.cycle2_time') }}"
timer_3_mb:
value_template: "{{ states('input_select.cycle3_time') }}"
delay_1_mb:
value_template: "{{ states('input_select.cycle1_duration') | int * 60 }}"
delay_2_mb:
value_template: "{{ states('input_select.cycle2_duration') | int * 60 }}"
delay_3_mb:
value_template: "{{ states('input_select.cycle3_duration') | int * 60 }}"
mb_teplota_vody:
value_template: "{{states('sensor.MBF_MEASURE_TEMPERATURE') | round(1)}}"
binary_sensor:
- platform: template
sensors:
peristaltika:
friendly_name: "Peristaltika mb"
value_template: "{{ states('sensor.MBF_RELAY_STATE')|int // 1 % 2 == 1}}"
filtrace:
friendly_name: "Filtrace mb"
value_template: "{{ states('sensor.MBF_PAR_FILTRATION_STATE')|int == 1 }}"
ohrev:
friendly_name: "Ohrev mb"
value_template: "{{ states('sensor.MBF_RELAY_STATE')|int // 64 % 2 == 1 }}"
filtrace_mb_auto:
value_template: "{{ is_state('input_boolean.filtrace_mb_auto', 'on') }}"
input_select:
cycle1_time:
name: Cyklus 1 - začátek
options:
- '05:00'
- '06:00'
- '07:00'
- '07:30'
- '08:00'
- '09:00'
- '10:00'
cycle2_time:
name: Cyklus 2 - začátek
options:
- '11:00'
- '12:00'
- '13:00'
- '14:00'
- '15:00'
cycle3_time:
name: Cyklus 3 - začátek
options:
- '16:00'
- '17:00'
- '18:00'
- '19:00'
- '20:00'
cycle1_duration:
name: Cyklus 1 - trvání
options:
- '1'
- '2'
- '3'
- '4'
cycle2_duration:
name: Cyklus 2 - trvání
options:
- '1'
- '2'
- '3'
- '4'
cycle3_duration:
name: Cyklus 3 - tvání
options:
- '1'
- '2'
- '3'
- '4'
automation:
- alias: Fitration - run_cycle_1
initial_state: 'on'
trigger:
- platform: template
value_template: >
{{ states('sensor.time') == states('sensor.timer_1_mb') }}
condition:
condition: and
conditions:
- condition: state
entity_id: input_boolean.bazen
state: 'on'
- condition: state
entity_id: input_boolean.cycle1_on
state: 'on'
action:
- service: input_boolean.turn_on
entity_id: input_boolean.filtrace_mb_auto
- service: script.run_a_cycle_mb
data_template:
cycle: '1'
- alias: Fitration - run_cycle_2
initial_state: 'on'
trigger:
- platform: template
value_template: >
{{ states('sensor.time') == states('sensor.timer_2_mb') }}
condition:
condition: and
conditions:
- condition: state
entity_id: input_boolean.bazen
state: 'on'
- condition: state
entity_id: input_boolean.cycle2_on
state: 'on'
action:
- service: input_boolean.turn_on
entity_id: input_boolean.filtrace_mb_auto
- service: script.run_a_cycle_mb
data_template:
cycle: '2'
- alias: Fitration - run_cycle_3
initial_state: 'on'
trigger:
- platform: template
value_template: >
{{ states('sensor.time') == states('sensor.timer_3_mb') }}
condition:
condition: and
conditions:
- condition: state
entity_id: input_boolean.bazen
state: 'on'
- condition: state
entity_id: input_boolean.cycle3_on
state: 'on'
action:
- service: input_boolean.turn_on
entity_id: input_boolean.filtrace_mb_auto
- service: script.run_a_cycle_mb
data_template:
cycle: '3'
#-----------------------------
# Ovladani filtrace pres MODBUS
#-----------------------------
script:
heating_mb_toggle:
sequence:
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: <s>1152</s> 1252 *
value: [16384]
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 1241
data_template:
value: ["{{states('sensor.tepelne_cerpadlo_mb_num') | int}}"]
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 752
value: [1]
- delay: 00:00:01
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 757
value: [1]
filtration_mb_toggle:
sequence:
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 1041
value: [0]
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 1043
data_template:
value: ["{{states('sensor.filtrace_mb_num') | int}}"]
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 752
value: [1]
- delay: 00:00:01
- service: modbus.write_register
data:
hub: bazen
unit: 1
address: 757
value: [1]
run_a_cycle_mb:
sequence:
- service: homeassistant.turn_off
data:
enity_id: switch.filtration
- service: script.filtration_mb_toggle
- service: script.heating_mb_toggle
- delay:
minutes: "{{states('sensor.delay_' + cycle + '_mb')}}"
- service: input_boolean.turn_off
data:
entity_id: input_boolean.filtrace_mb_auto
- delay: 00:00:01
- service: script.heating_mb_toggle
- delay: 00:00:03
- service: script.filtration_mb_toggle
stop_a_cycle_mb:
sequence:
- service: input_boolean.turn_off
data:
entity_id: input_boolean.filtrace_mb_auto
- delay: 00:00:01
- service: script.heating_mb_toggle
- delay: 00:00:03
- service: script.filtration_mb_toggle
WARNING: Testing on your own risk. Improper write (value, register) could cause that Hidrolife may be bricked or would require authorised repair.
*Corrected my typo >> register 1152 should be 1252