Hi all, any advice on the following problem would be much appreciated.
The problem is this; The boiler seems to preheat to around 70 degrees. When I turn on the hot water tap it takes a while for the boiler to fire up and the amber indicator light to come on. It can be almost straight away or can take 3 minutes or longer! When it does fire up the water temp drops to around 44 degrees and then take 2 - 3 minutes to start to climb as normal to around 73 degrees.
When it first started to happen the heating seemed to work fine. I asked a heating engineer to come out who replaced one part. Can't remember what he called it but it didn't resolve the problem with the hot water and the heating wont fir up at all now showing the code S O when switch the heating on.
Also, before the new part was replaced and the heating was still working, when the central heating was on and I turned the hot water tap on the hot water didn't get hot!!
Anyway, it's baffled the engineer who is going to contact Vaillant but any advice would be appreciated.
The problem is this; The boiler seems to preheat to around 70 degrees. When I turn on the hot water tap it takes a while for the boiler to fire up and the amber indicator light to come on. It can be almost straight away or can take 3 minutes or longer! When it does fire up the water temp drops to around 44 degrees and then take 2 - 3 minutes to start to climb as normal to around 73 degrees.
When it first started to happen the heating seemed to work fine. I asked a heating engineer to come out who replaced one part. Can't remember what he called it but it didn't resolve the problem with the hot water and the heating wont fir up at all now showing the code S O when switch the heating on.
Also, before the new part was replaced and the heating was still working, when the central heating was on and I turned the hot water tap on the hot water didn't get hot!!
Anyway, it's baffled the engineer who is going to contact Vaillant but any advice would be appreciated.
