On Sun, 11 Apr 2004 10:35:27 GMT, in uk.d-i-y
(Matthew Humphreys) strung together this:

I have my hot feed to AB, my CH is port A, the HW is port B (is the
OK)? (As I am writing this, I think the ports should be the other way
round?)

Nope, thats fine.

The connections for the wiring box a

Green Earth
Blue Neutral
White CH Call for heat
Grey HW off
Orange HW on (via the cyl sat)

Does this sound correct?

Yes.

From the FAQ (which makes me think I have the valve the wrong way
round).

Green/Yellow Safety Earth
Brown Not used.
Orange Go fully to 'B' when live.
Grey Live when at 'AB' or 'B'
White Go to 'AB' or 'B'.


If I have the valve the wrong way round, can I just swap the Grey and
white connections over?

No. I think your wiring fault is elsewhere in the system, assuming it
isn't a faulty component somewhere.
You might want to read these.
http://tinyurl.com/2dr9m
http://tinyurl.com/26hzu
Check the system through, with a test meter, for the correct voltages
at the right places.
--

SJW
A.C.S. Ltd.