The reed sensor in your coffee machine is responsible for measuring the water level. If you're getting a low water indication even after filling the coffee machine to maximum, it might be worth checking the reed sensor for damage and replacing it if necessary with this replacement reed sensor.
The electronic solenoid valve in your coffee machine helps direct the flow of gas within the appliance. If you're having trouble with the flow of gas in your coffee machine, it might be worth checking the solenoid valves for damage, and replacing it if necessary with this replacement electric solenoid valve.