The flow out of the hot tap in my daughter's kitchen reduced over the past couple of weeks to little more than a trickle.
A combi boiler supplies the house and mains water pressure is at the low end of the boiler's acceptable pressure limits. There are two other hot taps in the bath room above the kitchen and the boiler is in a bedroom cupboard slightly higher than the bathroom taps.
The property is ten years old and this is the first ( known ) occurance, certainly not in the five years my daughter has lived there.
Suspecting an air lock in the pipe the kitchen hot tap was back feed with cold water from the mains pressure cold tap while the hot taps in the bath room were both fully open. At first water out of the bath tap was clear, then dis-coloured and then a considerable amount of black and brown material came out followed fairly soon by clear water.
Do combi boilers create solids in the hot water and would this then settle and accumulate in the lowest part of the hot water system ? Or could there be another problem.
A combi boiler supplies the house and mains water pressure is at the low end of the boiler's acceptable pressure limits. There are two other hot taps in the bath room above the kitchen and the boiler is in a bedroom cupboard slightly higher than the bathroom taps.
The property is ten years old and this is the first ( known ) occurance, certainly not in the five years my daughter has lived there.
Suspecting an air lock in the pipe the kitchen hot tap was back feed with cold water from the mains pressure cold tap while the hot taps in the bath room were both fully open. At first water out of the bath tap was clear, then dis-coloured and then a considerable amount of black and brown material came out followed fairly soon by clear water.
Do combi boilers create solids in the hot water and would this then settle and accumulate in the lowest part of the hot water system ? Or could there be another problem.