OK LETS PUT IT A DIFFERENT WAY. THE BOLIER FIRES UP THE CENTRAL HEATING. IT HEATS UP THE HOUSE TO THE TEMPRATURE SET ON THE CONTROL ON THE WALL IN THE HALL. IT THEN TURNS OFF. A FEW MINS LATER IT FIRES UP AGAIN, RUNS FOR 30 SECONDS AND TURNS OFF AND SO ON AND SO ON.
MY QUESTION ONCE AGAIN IS...