Hi I have a main combi 24 he boiler showing intermittent flame failure, though the problem has been getting progressively worse. I've had a plumber come and look at it. I think he checked the flue and the pressure. He then opened up the PCB. He seemed to connect the joints with a multimeter so the flame ignited. He suggested that the joints were weak which would explain the intermittent operation.
He has recommended replacing the PCB and the air pressure switch. I wasn't entirely clear on his explanation but he said he tested it by bypassing the APS and then not bypassing it; he seemed to suggest that the flame did not come on when he didn't bypass the APS and is concerned that the problem would come back if he didn't replace the APS as well.
Does this sound like a reasonable diagnosis? Do I need to replace both the PCB and APS or could it just be one of the two?
Is £240 all in (parts £140 and labour £100) a reasonable amount to charge for this?
Does the whole PCB need to be changed or can you replace component parts?
Essentially, am I being ripped off?
Any help would be much appreciated.
He has recommended replacing the PCB and the air pressure switch. I wasn't entirely clear on his explanation but he said he tested it by bypassing the APS and then not bypassing it; he seemed to suggest that the flame did not come on when he didn't bypass the APS and is concerned that the problem would come back if he didn't replace the APS as well.
Does this sound like a reasonable diagnosis? Do I need to replace both the PCB and APS or could it just be one of the two?
Is £240 all in (parts £140 and labour £100) a reasonable amount to charge for this?
Does the whole PCB need to be changed or can you replace component parts?
Essentially, am I being ripped off?
Any help would be much appreciated.
