Ariston 80 L - Page 32

32
Error
Component
Fault cause



Fault mode
What to check
What to do
H5
fan
fan capacitor/motor broken → break
•
Check the functionality after a
temporary ON/OFF power
disconnection
• Verify that the resistance between
terminals is between 200-500 Ω
• Verify that the resistance between
the terminals and the ground
connection of the terminal block is
more than 1 MΩ
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
physical impediments to the movement of
fan blades → not working
Visual check of the component Clean the component
blades broken
If the component is faulty, replace it
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
Error
Component
Fault cause



Fault mode
What to check
What to do
H6
air sensor
faulty
component
→ 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
faulty component
→ open circuit
damaged wirings
→ open circuit
bad connection of wirings → open circuit
Verify the correct connection with the
mainboard
Place the component in the right
position
Error
Component
Fault cause



Fault mode
What to check
What to do
H7
evaporator sensor
faulty component
→ 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
faulty component
→ open circuit
damaged wirings
→ open circuit
bad connection of wirings → open circuit
Verify the correct connection with the
mainboard
Place the component in the right
position
Error
Component
Fault cause



Fault mode
What to check
What to do
H8
hot water sensor
faulty component
→ 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
faulty component
→ open circuit
damaged wirings
→ open circuit
bad connection of wirings → open circuit
Verify the correct connection with the
mainboard
Place the component in the right
position