Ferroli BlueHelix HiTech RRT C Instructions For Use, Installation & Maintenance page 376

Fault
Fault
code
Overtemperature protection
A08
intervention
Exchanger protection interven-
A09
tion
Overtemperature protection
F09
intervention
F10 Flow sensor fault
A11 Gas valve connection
F11 Return sensor fault
F12 DHW sensor fault
F13 Fume probe fault
Fume extraction duct safety
A14
device intervention
F15 - A07 High fume temperature
F19 Card parameter fault
System pressure slightly high
F21
(visible only in the Alarm menu)
376
BlueHelix HiTech RRT C
Possible cause
Flow or return sensors
incorrectly positioned or
damaged
No water circulation in
the system
Air in the system
No water circulation in
the system
Poor circulation and
anomalous flow probe
temperature increase
blocked exchanger
Flow sensor damaged
No water circulation in
the system
Air in the system
Sensor damaged
Wiring shorted
Wiring disconnected
Gas valve connector not
inserted.
Electrical connection
between control unit and
gas valve interrupted.
Gas valve damaged.
Sensor damaged
Wiring shorted
Wiring disconnected
Sensor damaged
Wiring shorted
Wiring disconnected
Probe damaged
Wiring shorted
Wiring disconnected
Fault A07 generated 3
times in the last 24 hours
The fume probe detects
an excessive tempera-
ture
Wrong card parameter
setting
System water pressure
too high
cod. 3541V304 - Rev. 00 - 03/2024
Cure
Check the correct positioning and
operation of the sensors and replace
them if necessary.
Check the circulating pump
Vent the system
Check the circulating pump and heat-
ing system
Vent the system
check the exchanger and system
Check correct positioning and opera-
tion of the flow sensor and replace it if
necessary
Check the circulating pump and heat-
ing system
Vent the system
Check the wiring or replace the sensor
Insert the connector
Check the wiring
Replace the gas valve
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring or replace the fume
probe
See fault A07
Check the exchanger
Check the fume probe
Check the flue material parameter
Check and if necessary modify param-
eter b15 to 3
Partially drain the system to a pressure
(shown on the display) of 1÷1.5 bar.
Check the expansion tank
EN