Failsafe always on

[Timewriter]

Hi All,
Last year I bought HFS-3 pvm2 system. It was successfully installed into my EVO X SST EDM and worked perfectly for several months.
Last month I had to make some changes in my gearbox and due to that engine was off from the car.
After we assembled the car some strange things happened to HFS system.
When I turn key to the pre crank position led display shows that failsafe function activated (yellow led water level, S and B led are on and water flow level shows 3 bar pressure ? this is very strange due to the system in pre crank position doesn?t flow anything).
After engine start nothing changes, picture the same. Thries shows the impulse from injectors.
While spray test ? SYS linked the pump is working and nozzle sprays water. But nothing changes at the display, no any more flow pressure (still shows 3 bar).
I checked wiring to the engine, it is the same as before reassembling, green and red wired to injectors and blue to the map sensor.
I have no idea what could be done wrong and what is the way to solve this problem.
Can you please advise some solution?
P.S. All potentiometers are in 12 o'clock position

Regards
Anton