Hi went to a Main 24 he today (very much a B rated baxi combi HE)
Boiler works fine 50% of the time. There is a fault on CH & DHW mode which is as follows;
Pump runs, primary flow swith operates, fan runs at full speed but there is no atempt at igniton, then flame failure light comes on, will not reset, you have to turn selector swith on/off a couple of times. or;
When the boiler is fired up in either CH or DHW mode the flame will cut out then straight away fire up again and carry on working.
I have had this probem with the baxi 105he and it was the pcb, i keep a selection of pcbs in the van so tried it on this and it hasnt sorted it.
Im thinking check min burner pressure, air pressure switch (unlikey as it does fire up most of the time) flame sensing electrode.
Any iders?? Anybody come across this probem before??
Will be going back to carryout more checks so will update
Cheers!!
Boiler works fine 50% of the time. There is a fault on CH & DHW mode which is as follows;
Pump runs, primary flow swith operates, fan runs at full speed but there is no atempt at igniton, then flame failure light comes on, will not reset, you have to turn selector swith on/off a couple of times. or;
When the boiler is fired up in either CH or DHW mode the flame will cut out then straight away fire up again and carry on working.
I have had this probem with the baxi 105he and it was the pcb, i keep a selection of pcbs in the van so tried it on this and it hasnt sorted it.
Im thinking check min burner pressure, air pressure switch (unlikey as it does fire up most of the time) flame sensing electrode.
Any iders?? Anybody come across this probem before??
Will be going back to carryout more checks so will update
Cheers!!