Drayton MA1-Losing the will to live

[nikki2803]

We have just had a new tank fitted and to that a Drayton MA1 valve installed as the other one I used to have to turn by hand! The new valve only operates on CH the wiring to the old valve was as follows

2-Earth
4-Grey
5-White
10-Blue
6-Orange

The plumber has wired the new one as follows

4-White
6-Grey
8-Orange
2-Blue
11-Earth

I am not sure what the old valve was and I can't get hold of the plumber to come back. Please, please help as it is really doing my head in!

 

[D_Hailsham]

Presumably the numbers are the terminals in a wiring centre, If so, we need to know what else is connected to each terminal as wiring is not standardised.

Post a list and it will be sorted.

 

[nikki2803]

Thanks I will check 2nite and post

 

[nikki2803]

Right then here goes, remembering I'm no expert. The connector block is a strip of eleven

Cylinder Stat
Red-5, Blue-7, Yellow-6, Earth-10

Valve
Blue-2, Grey-4, Orange-6, White-8, Earth-10

Pump
Blue-2, Brown-8, Earth-10

Feed
Brown-1, Blue-2, Earth-10

Control
LH side (CH) Black-2,red-1, Earth-10
RH side (HW)Blue-7, Red-3, Yellow-5

There are two other wires coming up to the box presumably room stat

1) red-3, Black-4, Earth-10
2)Black-2, red-8, earth-10

One last question, when you take the actuator off are you supposed to be able to move the valve by hand?

 

[seco services]

you told us your plumber had wired the new one as in your earlyer post.
now your colours on the valve don't match what you said he had done.

 

[nikki2803]

Sorry been up since 5am,

Bule-2, White-4, Grey-6, Orange-8

 

[seco services]

blue and earth are ok
its your white and grey i can't match up yet

 

[seco services]

is it only yellow & grey in no 6 ?

 

[nikki2803]

yes

 

[seco services]

have you a elecy meter or tester need you to check for power at one of the points

 

[nikki2803]

yes have neon tester at hand

 

[seco services]

on your programmer turn on hw so its calling but heating off

you should have live at no 5. yes or no ?

 

[nikki2803]

yes

 

[seco services]

good
now what is 6, 7, 8 live or dead ?
8 should be dead.

 

[nikki2803]

6 is live, 7 & 8 dead