What Am i Doing Wrong here before i blow up my House!!

[Chestercopperpot]

Trying to hook up my Honeywell CM927 to my Vaillant Ecomax boiler.
I hardly know how to wire a plug so bare with me!

So from the receiver, left to right ive got

N (Blue) going to N on the boiler
L (Brown) going to L on the boiler
L (Yellow & green) to earth on the boiler

A (Black) going to 3
B (Grey) going to 4

N, L and earth on the boiler is the mains already. Is it ok to shove another set of wires in the same holes as i have to here?

At present my power trips as soon as i plug in the boiler!

 

[petit_pablo]

L (Yellow & green) to earth on the boiler

Thats not going to help.

 

[Chestercopperpot]

L (Yellow & green) to earth on the boiler

Thats not going to help.

Enlighten me
Is yellow and green not used?

Is the rest ok?

 

[kevplumb]

L (Yellow & green) to earth on the boiler

i think

 

[picasso]

The reciever does not need an earth, get rid of the wire between L and earth and your stat will work ok.

 

[D_Hailsham]

L (Yellow & green) to earth on the boiler.

If you had read my Original Instructions carefully, you would see that it says that the earth wire is NOT used.

Nowhere did I say that you should connect the second L terminal to the boiler earth!

N, L and earth on the boiler is the mains already. Is it ok to shove another set of wires in the same holes as i have to here?

Yes. Otherwise I wouldn't have told you to do this.


PS Let's hope you haven't damaged the receiver.

 

[gas4you]

Or the boiler pcb!

 

[Chestercopperpot]

All working fine now.
It was the earthing

Big thanks to hailsham

 

[PRS1]

Read your thread from start to finish

Its a bit ignorant thanking the bloke when others have given u the required information before hand, with not even a thank you!!

 

[petit_pablo]

It was the earthing

No ****!