the heated towel rail in our upstairs bathroom has over a period of time stopped working. it is a standard through the central heating model with 2 trv at the bottom and a bleed valve at the top left.
The central heating system is non -combi with a multi feed punp in the airing cupboard by the water tank. it has 3 feeds from the pump, 1 downstairs rads, 2 upsatirs rads and 3 hot water.
All rads up and down work fine and have been bled. when i open the towel rail bleed valve it spurts clean water. if i close both valves then no water comes out and if i open/close each valve individually then water spurts out ok so i presume neither are blocked/closed.
if i then keep the bleed valve open for 5 - 10 mins then hot water seems to get through but by the following day it is cold again.
i have tried increasing the pump speed but no improvement.
any ideas please?
The central heating system is non -combi with a multi feed punp in the airing cupboard by the water tank. it has 3 feeds from the pump, 1 downstairs rads, 2 upsatirs rads and 3 hot water.
All rads up and down work fine and have been bled. when i open the towel rail bleed valve it spurts clean water. if i close both valves then no water comes out and if i open/close each valve individually then water spurts out ok so i presume neither are blocked/closed.
if i then keep the bleed valve open for 5 - 10 mins then hot water seems to get through but by the following day it is cold again.
i have tried increasing the pump speed but no improvement.
any ideas please?