immersion heater hortsmann economy 7

  1. R

    Horstmann Electronic 7 - Water Heater Immersion Controller

    Hi all, I have searched the forum but I cannot find this issue and I have contacted the manufacturer but it is Saturday and they are not back until Monday. System: Premier Plus Unvented Cyclinder with Horstmann Electronic 7 controller. We have had a few power cuts over the last couple of...
  2. J

    Hortsmann timer box not switching off hot water

    Ho I've just had my hortsmann economy 7 timer box replaced and it has been heating the water constantly even when I have turned the dial round so it is not set to come on. This has made no difference and the water continues to heat up unless turn it off by the hortsmann box.The plumber I had...