Ariston VLS ABS VLS Flat 80 Technisches Handbuch - Seite 18
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Insufficient
softener upriver the safety valve to reduce water hardness;
water flow
- dirt and dust
Incorrect appliance working mode settings:
- high water temperature set-point (could be check by the end user, too)
point is not able to satisfy the end user comfort request, adjust the set-point.
Incorrect thermostatic mixing valve setting (if present) due to:
- high water temperature set-point
Boiler water or
in compliance with the end user comfort request, adjust the set-point;
steam from
- faulty component
taps
replace it.
Low sensors sensitivity due to:
- high level of limestone into the tank
limestone, clean it and, if necessary, install a proper softener upriver the safety valve
to reduce water hardness.
Incorrect appliance horizontal installation
Noise during
dismount the product from the wall and make the proper installation.
the heating
High level of limestone into the tank
phase
limestone, clean it and, if necessary, install a proper softener upriver the safety valve to
reduce water hardness.
Dust and dirt (could be check by the end user, too)
because of dust and dirt presence, contact the network technical service.
Bad water
Pipes connection corrosion due to:
quality
- different materials matching
provide dielectric joints between them.
"Shower ready"
Incorrect jumpers setting on the PCB
icon/symbol
from what depicted at paragraph 2.5, set them properly.
often off
4.3 Routine maintenance
All maintenance operations and service visits should be performed by a competent person (who have the
skills required by the applicable norms in force).
The pressure safety device must be enabled regularly (once a month) to remove the limestone deposits
and to check that it is not clogged.
Replace the Mg anodes every two years. To remove them, disassemble the heating elements and unscrew
them from the support bracket.
To ensure the best performance from this appliance, descale the heating element once every two years. If
you prefer not to use special descaling acids for this operation, simply crumble away the lime deposit
without damaging the heating element.
if dirt or dust is present, clean the filter.
if the thermostatic mixing valve set-point is not
if the thermostatic mixing valve is damaged or out of tune,
if different metallic materials are used in the circuit,
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if the heating element is widely covered by
if the water pipes are on the right,
if the heating element is widely covered by
if the cold water has a bad quality
if the PCB jumpers have a different position
if the set-