Low hotwater pressure in mixer tap in kitchen sink

[Maur1]

Hi All
Woner if you can help.We had low water pressure coming into house during cold snap but never stopped completely. However now that water is back to normal the flow in the hot water to kitchen sin is very very light, just a trickle. It is fine in bathroom.

 

[mikegas]

how is your hw fed?

 

[Maur1]

Hi
It is fed from a tank in the attic

 

[Billy Bob Bob]

you may have a airlock,look at your washing machine incoming supply taps if theres a red and blue connect a washing machine hose to them (link them together) open both taps full keep trying hot taps until air lock cleared