I have a baxi 105e combi boiler. I had a problem whereby the boiler would not fire to heat the hot water. An engineer came and replaced the diaphragm and it now fires as it should. He also rteplaced the scaled up DHW switch.
The outlet pipe from the boiler is hot but by the time it reaches the taps it is cold. I have hot water intermittently, particularly at the kitchen tap which is next to the boiler and some upstairs from the bathroom sink. I had a bit of hot water from the bath but none from the shower.
It appears that the further away from the boiler I get and the higher the water flow then the temperature is less and the less time any heat lasts.
The outlet pipe from the boiler is hot but by the time it reaches the taps it is cold. I have hot water intermittently, particularly at the kitchen tap which is next to the boiler and some upstairs from the bathroom sink. I had a bit of hot water from the bath but none from the shower.
It appears that the further away from the boiler I get and the higher the water flow then the temperature is less and the less time any heat lasts.