ENG - Manual of installation, use and maintenance.
210-0352_libretto_WHC_ATI_eng.docx
32
Jan-19
FAULT F059
DESCRIPTION
Lockout for rapid increase at the flow probe temperature
ACTIVATION / DEACTIVATION CONDITIONS
This anomaly happens, if the F058 anomaly occurs
twice in 10 minutes or for 3 times in 120 minutes.
The anomaly is deactivated if the
reset
button is pressed and released.
DISPLAYS
The message "Err." appears alternately with the message
"F059". The
flashing fault symbol and the
flashing
symbol for temperature anomaly are displayed.
DEVICES
Gas valve: Off.
Fan: if foreseen, a post-purge cycle is performed, then it is
deactivated.
Circulation pump: Activated at maximum speed.
FAULT F090
DESCRIPTION
Lockout for generic anomaly on the safety microcontroller
circuitry.
ACTIVATION / DEACTIVATION CONDITIONS
This anomaly happens, if a generic hardware or
software anomaly occurs (not contemplated in the
main cases taken into consideration in this
document) on any of the components that makes
up the safety microcontroller circuitry.
The anomaly is deactivated if you press and
release the
reset button.
DISPLAYS
The message "Err." appears alternately with the message
"F090". The
flashing fault symbol is displayed.
DEVICES
Gas valve: Off.
Fan: if foreseen, a post-purge cycle is performed, then it is
deactivated.
Circulation pump: it performs a post-circulation cycle, if
foreseen, then it turns off.
FAULTS F091, F092, F093, F094, F095
DESCRIPTION
Lockout for hardware failure on the safety microcontroller
circuitry.
ACTIVATION / DEACTIVATION CONDITIONS
These anomalies activate if a hardware failure
occurs on any of the components that makes up
the safety microcontroller circuitry.
These anomalies are not restorable.
DISPLAYS
The message "Err." appears alternately with the message
(F090, F091, etc.). The
flashing fault symbol is
displayed.
DEVICES
Gas valve: Off.
Fan: if foreseen, a post-purge cycle is performed, then it is
deactivated.
Circulation pump: it performs a post-circulation cycle, if
foreseen, then it turns off.
FAULT F096
DESCRIPTION
Date storing error EEPROM (thermoregulation
microcontroller).
ACTIVATION / DEACTIVATION CONDITIONS
This anomaly activates, if a data storing error
occurs in one or more parameters by the
thermoregulation microcontroller in its EEPROM
memory. The EEPROM memory is used either to
store the non-volatile system data (but not the
safety ones), such as the current operating mode,
the working set-point and all the parameters. For
each data recorded in the EEPROM, the system
performs a reading to verify the correctness of the
operation performed. If the data read is not
