So any clues on this one. My plumber does not seem to have a clue!
The system runs on a Horstman BX 90 water heating boost control unit into a metre high copper cylinder tank. The system turns on during off peak and you can turn a switch for a boost during off peak (up to two hours). these...
No leaking tapes. Cant see or feel any leaking pipes.
In terms of insulation didn't have problem until a couple of days ago.
You are right about the Horstman bit that is the immersion heat controller - (Women!!).
Have bled a persistent rad that keeps getting air lock a few times...
Hello,
I am having work done in Bathroom at present. I have a Horstman BX90 boiler for hot water. Indication lights show that it is working and the water does get heated however the boiler is not holding the heat and it rapidly cools (eg around two hours).
Anyone got any ideas? Not too...