Recent content by marchuss

True! In hind sight this would have been easier than painstakingly working out what each terminal corresponds to (although it did mean I could work out that the white and grey needed to be attached to 13). Am I right in saying that having a relay box is quite an old design. Presumably, if I...

Hi, Thanks for the reply. The original valve did actually have 5 wires which led to the confusion. The previous installer must have attempted to put in a Mid-position valve when it should have been a diverter (which as you say has 3 leads). For example, with the old valve CH was wired to...

Hi, sorry for the delayed reply to this post, I have been very busy of late. Anyway on to the valve, I think I have solved the problem (thanks for the assistance): The original valve that I replaced was a mid position valve, but having analysed the circuit (please see diagram) this is not...

Thanks for the reply. The wiring diagram is useful. In answer to your question, I have checked the valve is the right way round: HW goes into the cylindler and CH goes to the central heating. I thought the readings were strange, thanks for confirming that. I did try reversing grey and white...

Hi, I have a strange problem with a new install of a 3 port valve which I could not find on this site. I have installed a Hortsmann F322m 3 port valve and I have noticed that with CH only, everything is fine: The CH light comes on and pipes to heating side warm up. With Hot water only...