Boiler Firing on and off once heating is on

[jwelch]

I'm not sure if the boiler should do this or not, but i've recently moved into a rented house. Heating works fine, radiators heat up and have hot water at the times I set, however once the heating is up and running and I assume up to the boiler temp, the boiler will repeatedly fire off for approx 20-30 seconds then fire up for a bit longer than off again and will continue to fir on and off unless I turn the thermostat down to switch off the heating or turn the dial for the boler temp down. If I turn the boler temp down it will eventually start firing on and off again. Is this normal? Apart from this the heating system seems to be working fine, I just thought it was a bit weird for the boiler to do this. The boiler is Triancogas 24/45.

Thanks
James

 

[doitmyself]

It's the room thermostat maintaining the desired temperature. If your house is not very well insulated, heat will quickly be lost when the boiler goes out. So the temperature will drop and the thermostat will turn the boiler on again.

Some modern wall thermostats are very sensitive and there is only a one degree difference between boiler on and boiler on.

As you are in a rented property, and if you are in receipt of benefits, you may be entitled to free insulation. Google for Warmfront. The landlord has to give permission for the work to be done, but it will not cost him a penny and he cannot put the rent up for a year.