BLUEHELIX TECH RRT 24 H
192
EN
cod. 3541C661 - Rev. 00 - 10/2018
F37
Incorrect system water pressure
Pressure too low
Fill the system
Water pressure switch damaged or
disconnected
Check the water pressure switch
F39
External probe fault
Probe damaged or wiring shorted
Check the wiring or replace the sensor
Probe disconnected after activating
the sliding temperature
Reconnect the external probe or disable the
sliding temperature
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
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 H
2
O circulation
Check the circulating pump
Air in the system
Vent the system
A23 - A24 - A26
F15 - F20 - F21
F40 - F47 - F50
F51 - F53
Card parameter fault
Wrong card parameter setting
Check the card parameter and modify it if nec-
essary
F56 - A56
Calibration fault
Incorrect parameters
Check parameters and carry out a 100% cali-
bration
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
poor elimination
Reset the fault. Turn the hot water faucet and
wait for the flame to stop flashing (about 2
minutes)
F61 - A61
Controller AGC01 fault
Controller AGC01 internal error
Check the earth connection, the electrode and
replace the controller if necessary
A54 - A55 - A63
Controller AGC01 fault
Controller AGC01 internal error
Try disconnecting the power supply to the
boiler for 10 seconds and replace the control-
ler 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 min-
utes from the boiler power supply and replace
the BCC Service key if necessary
A62
No communication between con-
troller and gas valve
Controller not connected
Connect the controller to the valve
Valve damaged Replace valve
Check the wiring or replace the valve
A64
Maximum number of consecutive
Resets exceeded
Maximum number of consecutive
Resets exceeded
Turn off the power to the boiler for
60 sec-
onds
and then reinstate the boiler
F66
Firmware not loaded successfully
Reload the firmware or replace the card
Fault code
Fault
Possible cause
Cure
