I have a SIME DGT HE Format combi boiler running on LPG and the fault code AL 02 is flashing indicating low water pressure. I have increased the water pressure but this has made no difference. (I will be away from home for a few hours now from 16:00 so will not be able to respond until later / tomorrow.)
Hi, I'm back now - is this a good time for you?
Let's talk tomorrow. I'll try you in the morning.
Hi - I'm available now to try and move things forward. You may have missed my answer last night that I've pressurised the boiler to about 1.4 bar - it's hard to see exactly, as the pressure gauge is underneath the boiler which is above a counter top!
Hi - good thinking! I've checked with a mirror and it's exactly 1.5 Thanks
No the boiler isn't working, there's a red flashing light and a flashing error code AL 02 which indicates low water pressure.
I've tried turning the power to the boiler off but not for 5 minutes, only for a few seconds and then on again. I'll try turning off for 5 mins and then turn on and reset.
Unfortunately that hasn't made any difference. I switched on after 7 minutes and still red light on and flashing AL 02 error message. I tried pressing reset button but red light staying on.
Hi - is it worth me trying to increase the pressure to a higher level to see if that makes any difference?
Thanks I'll try that...
As soon as I increased the water pressure up to around 2 the red light went out, but boiler is still not starting after pressing reset button - do I need to switch off for 5 mins again?
Will do. All now working again - boiler is functioning. Thank you for your help with this.