T
Tim123
About a week ago I switched off the power to our boiler in order to plaster around some sockets. After a few hours the power went back on but the boiler has not worked since.
I first saw that the water pressure was at zero, so I topped up using the filling loop. Then I saw that the boiler displayed a f.27 error. This is a Flame detection error.
I pressed the reset button and the boiler fan spun and then failed to ignite and displaying f.27 again.
Shortly afterwards I came back to the boiler to find 2 puddles under the boiler. Some drips were coming from the underside of the boiler.
Today a boiler repair chap came over. He confirmed the gas supply is ok, there is a good mains power supply to the unit. Plus some other tests that I didn't see. He confirmed that no there is no ignition spark.
He rang up vaillant who said it was either a faulty flame detector or faulty pcb. They said of he enplugged the flame detector from the pcb then the unit would try to ignite 3 times and then show a different error code. If this did not happen then the pcb may be at fault.
He then verified this info with another call to vaillant. They also said it was the flame detector or pcb, but unlike the previous advice they said the only way to test was to replace the parts.
I paid the chap for 90 mins of his time and went to buy a new flame detector. Got it fitted, but same problem happens.
So next thing to try according to vaillant is the pcb costing £140 for the parts plus labour.
Just wondering if someone can give a second opinion?
I first saw that the water pressure was at zero, so I topped up using the filling loop. Then I saw that the boiler displayed a f.27 error. This is a Flame detection error.
I pressed the reset button and the boiler fan spun and then failed to ignite and displaying f.27 again.
Shortly afterwards I came back to the boiler to find 2 puddles under the boiler. Some drips were coming from the underside of the boiler.
Today a boiler repair chap came over. He confirmed the gas supply is ok, there is a good mains power supply to the unit. Plus some other tests that I didn't see. He confirmed that no there is no ignition spark.
He rang up vaillant who said it was either a faulty flame detector or faulty pcb. They said of he enplugged the flame detector from the pcb then the unit would try to ignite 3 times and then show a different error code. If this did not happen then the pcb may be at fault.
He then verified this info with another call to vaillant. They also said it was the flame detector or pcb, but unlike the previous advice they said the only way to test was to replace the parts.
I paid the chap for 90 mins of his time and went to buy a new flame detector. Got it fitted, but same problem happens.
So next thing to try according to vaillant is the pcb costing £140 for the parts plus labour.
Just wondering if someone can give a second opinion?
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