Recently drained the boiler -Potterton Puma 100e combi to fit a new diverter valve which improved the central heating 10 fold but have no water coming from the hot taps, just a small trickle then none.
Have started by assuming it is an airlock and have tried the usual blocking mixer taps technique. Water will come out of another hot tap by blocking the bath mixer and turning on the cold but it doesn't improve anything, just drains the pipe again as soon as you turn off the cold.
Have started by assuming it is an airlock and have tried the usual blocking mixer taps technique. Water will come out of another hot tap by blocking the bath mixer and turning on the cold but it doesn't improve anything, just drains the pipe again as soon as you turn off the cold.