Baxi MainEco Combi 24 Installation And Service Manual page 68

9. Troubleshooting
Status signals Description
Error code 4
Fan fault
(4 times red signal)
Error code 5
Parameter error
(5 times red signal)
Error code 6
Miscellaneous
(6 times red signal)
Lock out (Status signals)
Status Description
signals
Error code 1 Sensor fault,
(1 times red temperature fault or
signal) flow fault
Maximum
Error code 2
temperature of heat
(2 times red
exchanger or control
signal)
unit exceeded
Ignition fault:
5 burner start-
4
Error code 3
up failures
(3 times red
False flame
4
signal)
signal
5x Flame loss
4
66
Code
e[34
e[00 / e[01
The fault codes can be read with the Recom service software, a suitable
controller or a service tool.
The fault codes from the status signals are related to the fault codes
that can be read by the Recom software or a suitable controller. The
meaning of the error codes is given in the error table:
Probable causes
Sensor not or badly
4
connected
Bad connection
4
Non-existent or
4
insufficient circulation
Water circulation direction
4
reversed
Sensor fault
4
Non-existent or
4
insufficient circulation
Sensor not or badly
4
connected
Bad connection
4
Sensor fault
4
No air supply or
4
insufficient air supply
No flue gas flow or
4
insufficient flue gas flow
Circulation
4
No ignition
4
Ignition arc, but no flame
4
formation
Presence of the flame but
4
insufficient ionization (<1
µA)
Baxi MainEco Combi and System 24 - 28 - 35 / 18 - 24
Press the J key for 5 seconds: The status signals will
flash red quickly and the boiler will start its reset
procedure. The boiler will also start an automatic venting
cycle lasting around 4 minutes. If the error code continues
to display, search for the cause in the error table and apply
the solution.
Checking / solution
Check the wiring
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Vent the air in the heating system
4
Check the water pressure
4
Check the cleanliness of the heat exchanger
4
Check the circulation (direction, pump, valves)
4
Replace the sensor if necessary
4
Vent the air in the heating system
4
Check the water pressure
4
Check the cleanliness of the heat exchanger
4
Check the circulation (direction, pump, valves)
4
Check the wiring
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Replace the sensor if necessary
4
Check air supply
4
Check flue gas flow
4
Replace seals
4
Check the wiring
4
Check breakdown to earth
4
Check the condition of the burner set
4
Check the earthing
4
Check that the gas valve is fully opened
4
Check the supply pressure
4
Purge the gas supply to remove air
4
Check the operation and setting of the gas valve unit
4
Check that the air inlet and flue gas discharge flues
4
are not blocked
Replace the ionization/ignition electrode
4
02092014 - 7619497-02