Ariston 100 L Technical Manual

31
Error
Component
Fault cause



Fault mode
What to check
What to do
H3
gas R134a gas is missing
•
Check the refrigerant connection
between units and the circuit of
the external unit using a leak
detector.
• Check that the pressure inside the
circuit have to be more than 3 bar
(using “service” connector on the
external unit)
• For more accurate measure, do
the * LOW GAS CHECKING at the
end of this paragraph
Make a gas recharge and check the
refrigerant connection between units
and the circuit of the external unit
using a leak detector.
If a component is faulty, replace it.
Empty the circuit, make the vacuum
and a new charge in accordance with
the quantity indicated on the external
unit technical label.
evaporator due to ice, leafs, dirt → clogged Visual check of the component Clean the component
air sensor
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 sensor
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
4-way valve
faulty component → break
•
Check the functionality after a
temporary ON/OFF power
disconnection
• Verify that the resistance between
terminals is not zero or infinite
• Verify that the resistance between
the terminals and the ground
connection of the terminal block is
infinitive
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
Check the correct connection with the
mainboard
Place the component in the right
position
incorrect positioning Verify the proper positioning
Place the component in the right
position
compressor
broken due to:
• wear
• safety thermostat broken (short
circuit)
• inlet refrigerant in liquid phase due
to high quantity of refrigerant
• over pressure due to broken
pressure switch (short circuit)
• Check the functionality after a
temporary power disconnection
• Verify that the resistance between
terminals is in compliance with
the relative table value
• Verify that the resistance between
the terminals and the external
unit casing is not zero
If the component is faulty, replace it
Not working due to:
• pressure switch broken (open
circuit)
• damaged wirings
• bad connection of wirings
• motor capacitor broken
•
Pressure switch: verify with a
tester that the resistance between
terminals is infinite even if the
circuit pressure is ok
• Visual check of the wirings and
check the connection with the
mainboard
• Motor capacitor: verify with a
tester that the resistance between
terminals is not zero
If a component is faulty, replace it;
Make connections in the right way
Error
Component
Fault cause



Fault mode
What to check
What to do
H4
evaporator
due to ice, leafs, dirt
→ clogged
Visual check of the component
Clean the
component
air sensor
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 sensor
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)