Recent content by Vaillantstumped

Hi, I have been trying various things, but basically the problem still appears to be the same. The boiler goes to F13 during the night, but will generally restart. The only exception is when I leave the heating ticking over all night. Could this be due to the boiler internal temperature...

Hi Tony, The area is urban with no major industries, businesses etc.. The problem has only started in the last few weeks and the boiler has been fine for several years. I did read somewhere that the boiler tries to run a pump exercise program if it has not been operational for a while...

Thanks for a reply, appreciate intermittent faults are difficult, but thought perhaps someone might have had something similar. I live near Southampton and the heating is usually on for a few hours in the morning and a few hours in the evening. Although we do override the timings if it...

Hi, New to the forum and hope someone can help me. I have a Vaillant ecomax pro 18e which appears to have an intermittent fault code 13. Boiler runs during day with seemingly no problems. However during night/early morning when no demand it gets a fault code 13 and the red light flashes...