Search results

  1. C

    Vaillant VCW sine 18 Pump wiring position II issue

    To anybody out there with experience on these old wonders (installed 1982!). The boiler has 3 options for wiring (not speed settings) and works fine with the pump wired to connection I ( appropriate, according to manual when clock and roomstat fitted) or connection III ( pump running...
  2. C

    Vaillant vcw sine 18 not modulating.

    Happy new year all. Ok, so I'm trying to fix my mums 40 year vcw sine 18 boiler which has given stirling service (20 years whilst residence was a guest house) and which I feel still has some years life left in it. Having read several previous posts/answers from very experienced vcw heating...
Back
Top