Recent content by MallyA

The boiler came as part of a house purchase and although it looks as good as new (even got the protective film on the case) the previous occupants never left any paperwork, and the CH has never worked. In relation to the colour of the wires to the DHW switch, they are black & white, not green...

I replaced the microswitch, just to find that the original was OK. The reason I thought it was the switch was because I put a continuity tester across it and it was permanently on. However, when the wiring is disconnected from it, the switch functions normally. With regard to the diaphram...

Thanks for that. I've now established that the (flimsy) DHW micro-switch is faulty and I'll be replacing it tomorrow.

Can anyone help me solve a problem on a Baxi Instant Condensing 80HE (same as a Potterton Performa 24i HE). The DHW works fine, but not the CH. The DHW neon remains lit constantly, regardless of whether DHW or CH is selected. When CH is selected, the first couple of radiators get warm...