ENG - Manual of installation, use and maintenance.
210-0352_libretto_WHC_ATI_eng.docx
30
Jan-19
DISPLAYS
The message "Err." appears alternately with the message
"F022". The
flashing fault symbol and the
flashing
flame failure symbol are displayed.
DEVICES
Gas valve: Off.
Fan: it moves to the ignition speed and there remains, to be
ready for ignition in the event that the anomaly is solved.
Circulation pump: Off.
FAULT F023
DESCRIPTION
Lockout for safety thermostat contact opening (safety
probe temperature above the limit threshold).
ACTIVATION / DEACTIVATION CONDITIONS
The anomaly occurs if the double contact
flow/safety probe detects a temperature equal to,
or higher than 100 ° C
The anomaly is deactivated if both of the following
conditions occur:
1.
The double contact flow/safety probe detects a
temperature lower than 100 ° C.
2.
You press and release the
reset button.
DISPLAYS
The message "Err." appears alternately with the message
"F023". The
flashing fault symbol and the
flashing
safety thermostat failure symbol are displayed.
DEVICES
Gas valve: Off.
Fan: It remains active (or turns on) at the post-purge speed.
Circulation pump: turned on at the maximum mechanical
speed.
FAULT F025
DESCRIPTION
Fan speed lower than the minimum safety threshold (with
burner in full operation)
ACTIVATION / DEACTIVATION CONDITIONS
The anomaly occurs if the following conditions
happen simultaneously:
1.
The burner is in full operation (flame
present after the safety time).
2.
The fan speed falls below 300 revolutions
/ minute.
The anomaly is deactivated when the fan speed
rises above 400 revolutions / minute.
DISPLAYS
The message "Err." appears alternately with the message
"F025". The
flashing fault symbol and the
flashing
symbol of fan failure are displayed.
DEVICES
Gas valve: Off.
Fan: If the request is still active, the system tries to bring
the fan speed to the ignition speed to try a new burner
ignition.
FAULT F026
DESCRIPTION
Lockout due to flow probe overheating.
ACTIVATION / DEACTIVATION CONDITIONS
The anomaly occurs if, within the time interval of
one hour, the anomaly for flow sensor overheating
is activated for three consecutive times (fault
F032).
The anomaly is deactivated if both of the following
conditions occur:
1.
The probe temperature falls below the
value indicated by the parameter
“
Menu
02.Parameter 12
”
.
2.
You press and release the
reset
button.
