Error code Description of fault
E01 11
E04 13
Fan fault
E02 07 Low water pressure
E01 17 No water circulation
E04 10 Ignition failure after 5 attempts
E01 04 Loss of flame detected 5 times in 24 hours
E04 00
E04 17
Gas valve fault
E04 08 Maximum safety temperature reached
E02 47 Connection with external device failed
E02 48 Configuration with external device failed
Important
If a different error code from those described in the error code ta
ble appears on the display contact Baxi Customer Support on
0344 871 1545.
8.2 Fault finding
Tab.11 Problems and solutions
Problem Possible causes Solution
There is no domestic hot wa
ter.
The boiler is not working.
Check that the boiler is being supplied with power.
Check fuses and the switches.
Check whether the gas isolation cock is properly
open.
If the property has a prepayment meter ensure it
has sufficient credit.
The DHW function is switched off. Activate the DHW mode.
The water pressure is too low (< 0.5 bar). Re-pressurise the system.
Insufficient flow. Flow must be at least 2.5 litres per minute.
The radiators are cold.
The temperature set point for the heating
is too low.
Increase the value with the CH temperature knob
or if a room thermostat is connected, increase the
temperature on the room thermostat.
The heating mode is deactivated. Activate the heating mode.
The radiator valves are not open. Open the valves of all radiators connected to the
system.
The boiler is not working. Check that the boiler is being supplied with power.
Check fuses and switches.
Check whether the gas isolation cock is properly
open.
If the property has a prepayment meter ensure it
has sufficient credit.
The water pressure is too low (< 0.5 bar). Re-pressurise the system.
8 Troubleshooting
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