Ariston 100 L - Page 35

35
Component
Fault cause
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Fault mode
What to check
What to do
Insufficie
nt water
temperat
ure
Product off
Check if the display shows “off” and if
there isn’t power from mains
Switch ON the product or Make a
proper installation
Low temperature set
Check the temperature set
-
point
Increase the value
Usage of a large amount of hot water
when the product is heating up phase
Increase the temperature set point
Functioning in “Voyage” mode
Verify if this mode is
activated even if
you need warm water
Switch the mode of functioning
HC/HP installer menu parameter P8 is ON
Keep parameter P8 OFF
thermostatic
mixing valve (if
present)
faulty component → out of tune Verify the tuning Adjust the outlet temperature
hot water, air,
evaporator,
heating element
zone sensors
faulty component → out of tune
Verify with a tester that the resistance
between terminals is compliant with
the “SENSOR TEST TABLE”
If the component is faulty, replace it
incorrect positioning Verify the proper positioning
Place the component in the right
position
evaporator
due to ice, leafs, dirt
→
partially
clogged
Visual check of the component
Clean the component
electrical
resistance
faulty component → break
Verify with a tester that
the voltage and
the resistance between terminals is not
zero
If the component is faulty, replace it
damaged wirings
→ not working
Visual check of the component
If the component is faulty, replace it
bad connection of wirings → not working
Verify the
correct connection with the
mainboard
Place the component in the right
position
Component
Fault cause



Fault mode
What to check
What to do
Long
heating
time
Functioning in “
Green
” mode
in particular
cold weather
Set “Auto” mode
hot water, air,
evaporator,
heating element
zone sensors
faulty component → out of tune
Verify with a tester that the resistance
between terminals is compliant with
the “SENSOR TEST TABLE”
If the component is faulty, replace it
incorrect positioning Verify the proper positioning
Place the component in the right
position
evaporator due to ice, leafs, dirt → partially clogged Visual check of the component Clean the component
electrical
resistance
faulty component → break
Verify with a tester that the voltage and
the resistance between terminals is not
zero
If the component is faulty, replace it
damaged wirings
→ not working
Visual check of the component
If the component is faulty, replace it
bad connection of wirings → not working
Verify the correct connection
with the
mainboard
Place the component in the right
position
tank
high water hardness with high water
temperature setpoint → limescale
Drain the tank and check the
component
Provide water with proper hardness
degree
Component
Fault cause



Fault mode
What to check
What to do
Insufficie
nt water
flow
Low pressure of water network
Check the cold water network pressure
is over 1-2 bar.
-
inlet pipe water
deflector
faulty component → break
Drain the tank and check the
component
If the component is faulty, replace it
high water hardness → clogged
Drain the tank and check the
component.
Verify the correct installation conditions
Clean the component.
Provide water with proper hardness
degree
safety valve inlet
pipe
limescale → clogged
Check the component.
Verify the correct installation conditions
Clean the component.
Provide water with proper hardness
degree
dirt into network pipe → clogged
Check the component.
Verify the correct installation conditions
Clean the component.
Provide clean water
-
obstructions by the water circuit
Water
leakage
Make a proper installation