Hello all.
Had a call out this morning to water dripping from under boiler. Found to be a split expansion vessel - the outer metal case had split on joint at bottom and was dripping out quite badly / water inside boiler. No fault codes. Replaced expansion vessel refilled system etc. Attempted to turn on and got F27 code. Fault guide says that this is incorrect flame. I have isolated boiler / made safe etc and am going back on Monday now to sort out. I am going to speak to Vaillant technical on Monday. Is there anything I should be looking for? A few searches online suggest a number of electrical problems it could be, including PCB which may have got wet from leak but didn't look like it (but not sure)
Any thoughts greatly appreciated.
Had a call out this morning to water dripping from under boiler. Found to be a split expansion vessel - the outer metal case had split on joint at bottom and was dripping out quite badly / water inside boiler. No fault codes. Replaced expansion vessel refilled system etc. Attempted to turn on and got F27 code. Fault guide says that this is incorrect flame. I have isolated boiler / made safe etc and am going back on Monday now to sort out. I am going to speak to Vaillant technical on Monday. Is there anything I should be looking for? A few searches online suggest a number of electrical problems it could be, including PCB which may have got wet from leak but didn't look like it (but not sure)
Any thoughts greatly appreciated.
