Fault code
Fault
F37
Incorrect system water pressure
F39
External probe fault
Activation of maximum DELTA T
F41
protection
Sensor control protection activation
F42
A42
F43
Exchanger protection intervention.
A23 - A24 - A26
F15 - F20 - F21
Card parameter fault
F40 - F47 - F50
F51 - F53
Calibration fault
F56 - A56
Calibration procedure not com-
pleted
F61 - A61
Controller AGC01 fault
A54 - A55 - A63 Controller AGC01 fault
F67
F68 - A68
BCC Service key error
No communication between con-
A62
troller and gas valve
Maximum number of consecutive
A64
Resets exceeded
F66
192
BLUEHELIX TECH RRT 24 H
Possible cause
Pressure too low
Water pressure switch damaged or
disconnected
Probe damaged or wiring shorted
Probe disconnected after activating
the sliding temperature
Heating sensor damaged
Return sensor damaged
No water circulation in the system
Air in the system
Heating sensor damaged
Return sensor damaged or discon-
nected
No system H
O circulation
2
Air in the system
Wrong card parameter setting
Incorrect parameters
Electrode damaged or not correctly
positioned.
Poor primary circuit circulation or
poor elimination
Controller AGC01 internal error
Controller AGC01 internal error
BCC Service key connected
Error loading BCC Service key file
Controller not connected
Valve damaged Replace valve
Maximum number of consecutive
Resets exceeded
Firmware not loaded successfully
cod. 3541C661 - Rev. 00 - 10/2018
Cure
Fill the system
Check the water pressure switch
Check the wiring or replace the sensor
Reconnect the external probe or disable the
sliding temperature
Check the correct positioning and operation of
the heating sensor
Check the correct positioning and operation of
the return sensor
Check the circulating pump
Vent the system
Check the correct positioning and operation of
the heating sensor
Check the correct positioning and operation of
the return sensor
Check the circulating pump
Vent the system
Check the card parameter and modify it if nec-
essary
Check parameters and carry out a 100% cali-
bration
Check the position of the electrode, replace it
if necessary. After replacement, repeat the
100% calibration
Reset the fault. Turn the hot water faucet and
wait for the flame to stop flashing (about 2
minutes)
Check the earth connection, the electrode and
replace the controller if necessary
Try disconnecting the power supply to the
boiler for 10 seconds and replace the control-
ler if necessary
Load the parameters
Repeat the loading procedure within 5 min-
utes from the boiler power supply and replace
the BCC Service key if necessary
Connect the controller to the valve
Check the wiring or replace the valve
Turn off the power to the boiler for 60 sec-
onds and then reinstate the boiler
Reload the firmware or replace the card
EN