Our Boiler is a Baxi neta-tec combi boiler,installed 2011 and serviced by the same gas safe firm every year.It has not had the central heating run until recently.When this is called for the boiler goes through the motions of trying to light ,gets what i would call a soft flame and then goes out.This cycle continues until the flame failure alarm ,code 128,occurs.The reset button is pressed a few times,the boiler resets and wil light (not on the first attempt but will light)
When lit succesfully,there is a noise as the flame gets stronger(it sounds healthy).Could this be what i would call the high flame
The hot water side works fine
Parts renewd by the gas firm so are:-
Pcb board
Flame sensing electrode
Flow return sender (pt no :-T-o-d s) not sure of the part description no taken from part
Another sensor (pt no:-ontoil-6609-l105-1115 ab)not sure of the part description no taken from part
Leads to these sensord have been replaced also
The gas valve has been exchanged with another then ruled out and replaced with the original
The boiler was lit on heating via the remote control device and cut out.The remote control device was moved to a cooler room and after some time cooled down ,called for heat and the boiler lit with a healthy sounding strong noise .
The remote control was turned down to a low temp for the evening and in the morning was turned up,calling for heat but the boiler failed again with the error code 128,the reset button pressed and it eventually started.
Has any one any experiance of what could be the cause,maybe something sticking after not being used for several months
Thanks for any suggestions
regards
When lit succesfully,there is a noise as the flame gets stronger(it sounds healthy).Could this be what i would call the high flame
The hot water side works fine
Parts renewd by the gas firm so are:-
Pcb board
Flame sensing electrode
Flow return sender (pt no :-T-o-d s) not sure of the part description no taken from part
Another sensor (pt no:-ontoil-6609-l105-1115 ab)not sure of the part description no taken from part
Leads to these sensord have been replaced also
The gas valve has been exchanged with another then ruled out and replaced with the original
The boiler was lit on heating via the remote control device and cut out.The remote control device was moved to a cooler room and after some time cooled down ,called for heat and the boiler lit with a healthy sounding strong noise .
The remote control was turned down to a low temp for the evening and in the morning was turned up,calling for heat but the boiler failed again with the error code 128,the reset button pressed and it eventually started.
Has any one any experiance of what could be the cause,maybe something sticking after not being used for several months
Thanks for any suggestions
regards