Ariston FAST EVO, User Manual

21

appliance protection devices

Appliance shut-off conditions

The appliance is protected from malfunctions by means 

of internal checks performed by the electronic P.C.B., 

which stops the appliance from operating if necessary.

Switch off the appliance. Shut off the gas valve, remove 

the batteries and contact a quali

fi

 ed technician.

The red LED shows the error codes.

OFF

Led

Jumper

WARNING!!

Never tamper with or decommission the 

fl

 ue gas 

sensor. This could affect the proper operation of 

the appliance. 

Poor draught conditions could cause exhaust gas 

back

fl

 ow into the installation room. 

Hazard of carbon monoxide intoxication

.

WARNING!!

Water  with  a  temperature  higher  than  50° 

cause serious burns.

Always verify water temperature before use.

WARNING!!

DO NOT USE THE APPLIANCE WITHOUT 

WATER.

Red

L.E.D.

Description

Checks to make

Fixed

Battery exhausted Replace battery

Single

fl

 ash

The appliance

does not turn on

1. Check that 

the water 

fl

 ow 

sensor is properly 

connected

2. Check/Replace the 

battery

Double

fl

 ash

No

fl

 ame 

detected

1. Check the gas 

cock.

2. Check the position 

of the detection 

electrode

Three

fl

 ashes

Gas valve 

defective

Check if the gas 

diaphram is not 

obstructed or locked

Four

fl

 ashes 

Overheat

1. Check for 

a possible 

obstruction of the 

fl

 ue

2. Check the water 

pressure (too low)

Five

fl

 ashes

Temperature 

probe

defective

1. Check the cable 

of the temperature 

probe

2. Check the water 

pressure (too low)

 r

o

r

r

e

g

n

i

s

ir

a

m

m

u

s

e

l

b

a

T

Temporary  Shut-Off  due  to  defective 

fl

 ue  gas 

discharge

This device causes the applaince to shut down in the 

event of an anomaly in the 

fl

 ue gas discharge. 

The appliance shutdown is temporary.

After  12  minutes,  the  aplliance  begins  the  ignition 

procedure; if normal conditions have been restored, the 

appliance operates as normal. If not, it shuts down and 

the cycle is repeated.

WARNING

In the event of a malfunction or if repeated intervention 

is required:

-   switch the appliace off, 

-   close the gas valve,

-   remove the batteries,

-  contact the Technical Assistance Service or a quali

fi

 ed 

technician  in  order  to  repair  the 

fl

 ue  gas  discharge 

fault once the cause of the malfunction is detected.

Whenever  maintenance  work  is  performed  on  the 

device, use original spare parts only and follow the 

relative instructions carefully.