Worcester 24i

[Garydp]

My parents have just moved house and they have a Worcester 24i boiler. When they turn on the central heating the radiators warm up. As soon as the required temperature is met the boiler turns off and the radiators go cold straight away. Is this normal as there old boiler when switched off the radiators stayed warm for a while after

 

[terryplumb]

Radiators don't usually lose heat
" Straightaway", how much time are you actually talking about ?
Is there a room thermostat ,where is it located ?

 

[Garydp]

Within 5-10 minutes. There is a room thermostat in the living room. About 5 meters from the actual boiler. The living room radiator is about 4 meters from the thermostat

 

[CBW]

Check if the filling loop is open/passing. Wait for rads to cools and check the pressure.

 

[terryplumb]

Within 5-10 minutes. There is a room thermostat in the living room. About 5 meters from the actual boiler. The living room radiator is about 4 meters from the thermostat

Over several minutes the temperature of any radiator would drop. Does the room temperature become noticeably cooler ,if it does the stat should ignite the boiler ???

 

[Garydp]

The radiator is completely cold in that time. The room temperature does drop but the thermostat temperature doesn’t change.

 

[Garydp]

Check if the filling loop is open/passing. Wait for rads to cools and check the pressure.

sorry not sure how to do that

 

[terryplumb]

Worthwhile replacing the stat .

 

[terryplumb]

sorry not sure how to do that

I wouldn't bother.

 

[CBW]

sorry not sure how to do that

Terry makes a fair point, as you’ve not mentioned pressure related issues.