6.4 HOT waTer valve
WHEN TO INTERVENE
The following problems may occur:
1 Failuretodeliverwater.
2 Continuous dripping.
3 Erroneous programming.
Cases 1 and 2 are due to malfunction of the
valves so you need to access them and verify
that they are working properly.
The valve may stop operating due to electri-
cal problems or is not working properly due to
obstructions for example caused by pieces of
limescale that detach from the heater and clog
the valve.
If replacement is not helpful, there could be a
problem with the relay in the electronic board,
therefore it is necessary to directly measure the
voltage with a voltmeter while water is being
dispensed.
Position the tip in correspondence of the con-
nector shown by the figure to measure voltage.
HOW TO ACCESS THE VALVE
To safely access the valve, it is necessary to:
1 Open the steam valve to let steam out com-
pletely.
WARNING
Totally discharge pressure inside the heater.
It is not possible to operate with pressure in
the heater.
Fig. 93
Fig. 94
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