Recent content by martynhr

Cheers Dave, I might go ahead and order one, anyone know where the VUW number is located on the boiler so I can get the correct part?

I've checked the mains polarity and its correct. According to the installation instructions connections 3 + 4 are for room stat with 5 used as a neutral for a 3 terminal room stat, and if there are no room stat/external controls then 3 + 4 are linked to simulate demand and it is controlled by...

Hi, My Vaillant Turbomax 828E will give me DHW without a problem but no CH. I have no fault codes stored. I have eliminated any external controls by looping connections 3 + 4 but still nothing. I have also tried removing the timeswitch. The status of the CH demand (i+-) (d08) is always zero...

Hi Guys, I have the same boiler with the same problem, I have looped connections 3 + 4 but still there is no demand for heating, also the bolier will operating in DFh mode for a few minutes without a problem. Just wondering if anyone has fixed this problem before and what the problem was. I...