Having an intermittent problem with hot water to shower . Occasionally, after someone has had their shower perfectly OK, the next person who has a shower is unable to get hot water, as the boiler fails to ignite. Taps do not work either. Only happens very occasionally but I think it more often happens if someone has taken a lengthy shower say taking 10/15 minutes. Sometimes the next person has to wait 15 / 30 minutes before it seems to reset itself, & then it works perfectly OK again. I'm wondering if this is a case of overheating or an over sensitive sensor of some sort.
Secondly, can anyone explain the purpose of the 'temperature control knob for hot water' on the front of the boiler. Its presently on 'max'(4) but can be turned back to 3,2, or 1. Surely you can adjust the heat of the water by the rate of flow from the taps. Should it be on max? The shower by the way is a straightforward 'new team ' shower.
Secondly, can anyone explain the purpose of the 'temperature control knob for hot water' on the front of the boiler. Its presently on 'max'(4) but can be turned back to 3,2, or 1. Surely you can adjust the heat of the water by the rate of flow from the taps. Should it be on max? The shower by the way is a straightforward 'new team ' shower.