Hi Guys,
I replaced my leaking indirect hot water cylinder last week. Cos I'm an amateur it took me a few evenings (with the water off and CH system drained). Now it's all back together, but problem with hot water.
The boiler comes on, but goes off after a few minutes. Once its gone off it wont come on again for a few hours (something cooling down ?) Theres hot water in the boiler out pipe but it doesnt get to the tank.
I have 2 pumps, both seem to be on the CH circuit (no not water booster). Only one seems to work, i.e. it makes a humming noise and gets pretty hot. The other is silent, cant feel any movement in it and its cold. Do boilers have a cut out if the water isnt circulating ? What should I try to identify / fix problem ? Why 2 pumps ?
I replaced my leaking indirect hot water cylinder last week. Cos I'm an amateur it took me a few evenings (with the water off and CH system drained). Now it's all back together, but problem with hot water.
The boiler comes on, but goes off after a few minutes. Once its gone off it wont come on again for a few hours (something cooling down ?) Theres hot water in the boiler out pipe but it doesnt get to the tank.
I have 2 pumps, both seem to be on the CH circuit (no not water booster). Only one seems to work, i.e. it makes a humming noise and gets pretty hot. The other is silent, cant feel any movement in it and its cold. Do boilers have a cut out if the water isnt circulating ? What should I try to identify / fix problem ? Why 2 pumps ?