I have an ideal Elan2 boiler in a conventional system, that seems to function correctly for the first 30 minutes when the heating is switched on. Then it seems to go through a routine of switching on and off every 30 seconds, when in this routine and the boiler is on it is very noisy and there can be a whistling noise. This switching on and off can last for 30 minutes until the house has reached the temperature set on the thermostat (20 degrees).
any ideas what could be causing this?
Thanks
Paul
any ideas what could be causing this?
Thanks
Paul