Watts Enware Aquablend 1500, Руководство по установке, Страница: 18 / 28

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TROUBLESHOOTING
FAULT/
SYMPTOM
CAUSE RECTIFICATION
The desired
mixed water
temperature
cannot be
obtained
or valve is
difficult to
set.
• Hot and cold supplies
are fitted to the wrong
connections
• Valve contains debris
• Strainers contain debris
• Non-return devices are
damaged
• Top Cap and/or Piston
O-rings are damaged
• Refit the valve with Hot/
Cold supplies fitted to the
correct connections
• Clean the valve ensuring
that all debris is removed
and components are not
damaged
• Clean strainers ensuring
debris is removed
• Check non-return device
is not jammed.Clean it if
necessary
• Check Top Cap & Piston
O-rings for damage.
Replace if necessary
The valve
will not shut
down
• The hot to mix temperature
differential is not 10°C or
greater.
• The piston O-ring is
damaged.
• Valve body seat (Hot Seat)
is damaged or fouled by
debris
• Cold seat (bottom surface
of Top Cap) is damaged
• Thermostatic element has
failed
• Plastic shuttle of
Thermostatic element has
been damaged by debris
• Raise hot water
temperature.
• Replace piston O-ring
• Clean seat using mild
descaling solution
• Replace top cap
• Replace element
Mix
temperature
unstable
• Debris is fouling valve.
• Flow rate below 4L/min.
• Strainers are fouled.
• Clean the valve ensuring
that all debris is removed
and components are not
damaged
• Rectify any pressure
deterioration.
• Clean strainers.
Mix
temperature
changing
over time
• Inlet conditions (pressures
or temperatures) are
fluctuating.
• Strainers contain debris
• Install suitable pressure
control valves to ensure
inlet conditions are within
those stated on page 7.
• Clean strainers ensuring
debris is removed