Can anyone suggest why my Bristan Prism Thermostatic shower runs cold?
I am on my third cartridge in 2 years. Each time I replace the cartridge it is fine and boiling hot for 3-4 months then it gradually becomes colder but only at certain times of the day. You can have a hot shower at 4pm but a warm one at 7pm.
When this happens there is always hot water available from the other taps in the house and the hot water tank is full of hot water. The boiler is new and 1 year old.
Each time we renew a cartridge we check the filters in the elbows for limescale build up - there is none. The old cartridges are free of limescale as well.
I am just about to contact Bristan again and ask for my 4th cartridge.
I am on my third cartridge in 2 years. Each time I replace the cartridge it is fine and boiling hot for 3-4 months then it gradually becomes colder but only at certain times of the day. You can have a hot shower at 4pm but a warm one at 7pm.
When this happens there is always hot water available from the other taps in the house and the hot water tank is full of hot water. The boiler is new and 1 year old.
Each time we renew a cartridge we check the filters in the elbows for limescale build up - there is none. The old cartridges are free of limescale as well.
I am just about to contact Bristan again and ask for my 4th cartridge.