BLUEHELIX TECH RRT 24 C
44 EN
cod. 3541P250 - Rev. 01 - 07/2018
A14
Flue extraction duct safety device
intervention
Fault F07 generated 3 times in the
last 24 hours
See fault F07
F34 Supply voltage under 170V Electric mains trouble Check the electrical system
F37 Incorrect system water pressure
Pressure too low Fill the system
Water pressure switch damaged
blocked or not connected
Check the water pressure switch
F39 (Optional) External probe fault
Probe damaged or wiring shorted Check the wiring or replace the sensor
Probe disconnected after activating
the outside temperature mode
Reconnect the external probe or disable the out-
side temperature mode
F41
Activation of maximum DELTA T
protection
Heating sensor damaged
Check the correct positioning and operation of
the heating sensor
Return sensor damaged
Check the correct positioning and operation of
the return sensor
No water circulation in the system Check the circulating pump or system blockage
Air in the system Vent the system
F42
A42
Sensor control protection activation
Heating sensor damaged
Check the correct positioning and operation of
the heating sensor
Return sensor damaged or discon-
nected
Check the correct positioning and operation of
the return sensor
F43 Exchanger protection intervention.
No system water circulation Check the circulating pump or system blockage
Air in the system Vent the system
A23 - A24 -
A26
F15 - F20 -
F21
F40 - F47 -
F50
F51 - F53
PCB parameter fault Wrong PCB parameter setting
Check the PCB parameter and modify it if neces-
sary
F56 - A56
Calibration fault
Incorrect parameters
Check parameters and carry out a 100% calibra-
tion
Electrode damaged or not correctly
positioned.
Check the position of the electrode, replace it if
necessary. After replacement, repeat the 100%
calibration
Calibration procedure not com-
pleted
Poor primary circuit circulation or
over heating?
Reset the fault. Open the hot water tap and and
wait for the flame to stop flashing (about 2 min-
utes)
F61 - A61 PCB AGC01 fault PCB AGC01 internal error
Check the earth connection, to the electrode &
replace the PCB if necessary
A54 - A55 -
A63
PCB AGC01 fault PCB AGC01 internal error
Try disconnecting the power supply to the boiler
for 10 seconds and replace the PCB if necessary
F67 BCC Service key connected Load the parameters
F68 - A68 BCC Service key error Error loading BCC Service key file
Repeat the loading procedure within 5 minutes
from the boiler power supply and replace the
BCC Service key if necessary
A62
No communication between PCB
and gas valve
PCB not connected Connect the PCB to the Gas valve
Valve damaged Replace valve Check the wiring or replace the Gas valve
A64
Maximum number of consecutive
Resets exceeded
Maximum number of consecutive
Resets exceeded
Disconnect the power supply to the boiler for 60
seconds and then reinstate the boiler
F66 Firmware not loaded successfully Reload the firmware or replace the PCB
Fault code Fault Possible cause Cure