Baxi MainEco Combi 24 Installation And Service Manual page 66

9. Troubleshooting
Status signals Description
Shutdown code 1
Temperature protection
(1 times green signal)
Shutdown code 2
Shutdown input
(2 times green signal)
Shutdown code 3
Flame loss
(3 times green signal)
Shutdown code 4
Communication fault
(4 times green signal)
Shutdown code 5
Parameter or identification fault 5v[0 / 5v[16 / 5v[17 / 5v[18 / 5v[19
(5 times green signal)
Shutdown code 6
Miscellaneous
(6 times green signal)
Shutdown Description
code
Parameter error
5v[0
Maximum flow temperature
5v[1
exceeded
Maximum increase of the
flow temperature has been
5v[2
exceeded
Maximum difference
between the flow and return
5v[7
temperature exceeded
Shutdown input is open
5v[10
Shutdown input active or
5v[11
frost protection active
Communication error with
5v[12
the HMI PCB
(1) These lock-outs are not stored in the fault memory
64
Code
5v[1 / 5v[2 / 5v[7
5v[10 / 5v[11
5v[22
5v[12 / 5v[13 / 5v[21
5v[15 / 5v[25
The boiler starts up again automatically when the reason
for the blocking has been removed.
The shutdown codes from the status signals are related to the
shutdown codes that can be read by the Recom software or a suitable
controller. The meaning of the shutdown codes can be found in the
shutdown table:
Probable causes
Parameters faulty
4
Non-existent or insufficient
4
circulation
Non-existent or insufficient
4
circulation
Sensor error
4
Non-existent or insufficient
4
circulation
Sensor error
4
External cause
4
Parameter error
4
Bad connection
4
External cause
4
Parameter error
4
Bad connection
4
Connection box not
4
connected
Baxi MainEco Combi and System 24 - 28 - 35 / 18 - 24
Checking / solution
Reset df and dV
4
Restore parameters with Recom
4
Check the circulation (direction, pump,
4
valves)
Reasons for the heat demand
4
Check the circulation (direction, pump,
4
valves)
Check the water pressure
4
Check that the sensors are operating
4
correctly
Check that the sensor has been correctly
4
fitted
Check the cleanliness of the heat
4
exchanger
Check the circulation (direction, pump,
4
valves)
Check the water pressure
4
Check that the sensors are operating
4
correctly
Check that the sensor has been correctly
4
fitted
Check the cleanliness of the heat
4
exchanger
Suppress the external cause
4
Check the parameters
4
Check the wiring
4
Suppress the external cause
4
Check the parameters
4
Check the wiring
4
Check the wiring
4
02092014 - 7619497-02