Pl62 problem with the water charge solenoid valve locked in open position

Quando questa valvola non funziona correttamente si possono verificare 2 problemi:

1 il nucleo non sale:
in questo caso l'acqua non può entrare nella caldaia a vapore.
Quindi la scheda elettronica non abilita il riscaldamento e manda la macchina in blocco.

2 il nucleo non si chiude:
l'acqua passa attraverso la valvola anche quando non dovrebbe passare. In questo modo la caldaia vapore continua a riempirsi e la pressione del caffè (con il filtro cieco) è inferiore a 3 bar.
il vapore sarà anche troppo bagnato.

This 2-way valve has the task of passing water only when the level probe detects lack of water.
For example, if we make coffee it must remain closed otherwise the water would not go only to the coffee exchanger but also to the steam boiler.
While when the water load is activated in the steam boiler the valve must let the water pass.

When this valve does not work correctly, 2 problems may occur:

1 the nucleus does not rise:
in this case the water cannot go into the steam boiler.
therefore the electronic board does not enable the heating and sends the machine in lockout.

2 the nucleus does not close:
water passes through the valve even when it should not pass. In this way the steam boiler continues to fill and the coffee pressure (with the blind filter) is lower than 3 bar.
the steam will also be too wet.