Ariston 100 L Technical Manual

29
TROUBLESHOOTING
Displayed faults
As soon as a fault occurs, the appliance enters into the fault mode while the display shows
flashing signals and visualises the error code. The water heater will continue supplying hot water
if the fault affects only one of two the heating units, by activating the heat pump or heating
element.
If the fault involves the heat pump, the symbol "HP" will flash on the screen, while the heating
element symbol will flash if the fault involves this component. If both components are affected,
both symbols will flash.
Errors Index
Error code Heating element operation
Heat pump operation
Heating
element
E1 OFF OFF
E2 OFF OFF
E4 OFF OFF
E5 OFF OFF
Heat pump
H2
ON OFF
H3
ON OFF
H4
ON ON
H5
ON OFF
H6
ON OFF
H7
ON OFF
H8
ON OFF
H9
ON OFF
Electronics
F1 OFF OFF
F2 OFF OFF
F3 OFF OFF
F4 OFF OFF
F5 ON ON
Error
Component
Fault cause



Fault mode
What
to check
W
hat to do
E1
water water is missing  no tank filling Verify if the water is inside the tank
Fill the tank
and Check the
functionality after a temporary
ON/OFF power disconnection
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
Error
Component
Fault cause



Fault mode
What to check
What to do
E2
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
water water is missing  no tank filling Verify if the water is inside the tank
Fill the tank and Check the
functionality after a temporary
ON/OFF power disconnection
Error
Component
Fault cause



Fault mode
What to check
What to do
E4
heating element
zone sensors
bad connection of wirings  open circuit
Check the correct connection with the
mainboard
Place the component in the right
position
damaged wirings

open circuit
Visual check of the component
If the component is faulty, replace it
faulty component  open/short circuit
Verify with a tester that the resistance
between terminals is compliant with
the “SENSOR TEST TABLE”
If the component is faulty, replace it
Error
Component
Fault cause



Fault mode
What to check
What to do
E5
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

Ariston 100 L Specifications

General

Power Source	Electric
Pressure Rating	8 bar
Capacity	100 L
Type	Storage Water Heater
Thermostat	Adjustable
Temperature Range	Up to 75°C
Insulation	Polyurethane Foam
Warranty	2 years
Dimensions	Varies by model (approx. 913mm x 450mm x 480mm)
Weight	Varies by model (approx. 27 kg)