Thank you. Where are these thermostats? Are they real things, or computer generated things. ..hence my question around pcb?
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Any bolier/Gas engineers here.
I have a 10 year old Worcester Bosch 30si. Heating works fine. But if I run a bath, after 5 mins the hot water will cut out and a blue flashing light and a red flashing reset button will start. If I press the reset button, all appears fine until another 5 mins...