Hi
I have a worcester Bosch Highflow 400 RSF which is sometimes not supplying hot water when the heating is also on, when the Heating is switched off the Hot Water fires immediately.
I have changed the water dverter valve and chcked the pressure which is fine.
Can anyone tell me if the water demand light should come on and the boiler should fire as soon as the hot water tap is opened or does the boiler use up hot water in its storage tank first and only fire if extra is needed.
Also does anyone have any idea what might be stopping the boiler firing on hot water demand when the heating is on.
Thanks
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I have a worcester Bosch Highflow 400 RSF which is sometimes not supplying hot water when the heating is also on, when the Heating is switched off the Hot Water fires immediately.
I have changed the water dverter valve and chcked the pressure which is fine.
Can anyone tell me if the water demand light should come on and the boiler should fire as soon as the hot water tap is opened or does the boiler use up hot water in its storage tank first and only fire if extra is needed.
Also does anyone have any idea what might be stopping the boiler firing on hot water demand when the heating is on.
Thanks
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