Honeywell ST6400c programmer

[Drfeelgood1]

hello, i need a wiring diagram for this programmer, does anyone know were i can get one from? if the programmer is defective as it now doesnt appear to be instrsucting the boiler to turn on and of can i fit an updated programmer to the exisiting wiring?

cheers for all advice

stu

 

[doitall]

Honeywell web site have them, or you could send me an email and i'll let you have a copy, in my profile, but remove the white space.

You could always change it like for like.

 

[bengasman]

6400 is obsolete, new model is 7400 I believe, and afaik you can just swap them. About 50 quid.

 

[doitall]

But you can still buy them £50.00

clickytradeplumbing

 

[Boilerman2]

ST9400C Straight swap and much improved on the 6400 series

 

[bengasman]

Interesting, what is improved about it? I thought the st 6400 was pretty decent.