Honeywell motorised valve / HW Thermostat wiring

[DeeZarster]

Can anyone advise please.

A plumber has fitted a replacement V4073A motorised valve to a friends, all Honeywell CH system. Problem is, hot water is bleeding into the heating side of the system and the valve does not appear to be controlling this correctly. Independently, the programmer, wall thermostat and tank thermostat all appear to be functioning as they should, however i am wondering if the tank thermostat wiring is correct, and if this is the problem.

In the instructions for the valve it states, relating to the tank thermostat : " on double output programmers" "omit the brown wire and revese C & 1."

At present C = Brown, 2 = Blue, 1 = Yellow, E = No wire

So if I omit brown I no longer have a C. Do i move the yellow to C as suggested and does Blue now at 2 move to 1, or does the blue stay where it is, at 2 ?

Thanks

 

[BOB D.O.L.E]

hot water is bleeding into the heating side of the system

what makes you think this is happening

 

[DeeZarster]

With CH turned off, HW turned on, Rads get extremely hot.

 

[seco services]

what was the valve changed for in the first place?

 

[twgas]

With CH turned off, HW turned on, Rads get extremely hot.

does it go through the valve or are you getting reverse circulation

 

[DeeZarster]

As far as I am aware because the original valve was faulty. Not sure if the new valve which has 5 wires, no Brown, replaced an old style valve with 6 wires. which is why i am wondering if the wiring for the cylinder stat needs to be changed as implied in the instructions.

The valve appears to have no power to it, the lever on the side moves freely up and down with no resistance. I have removed the valve head, and the spindle to which it attaches can be moved with finger pressure, so i guess the ball is free.

Don't think its reverse circulation, not sure though.

 

[twgas]

replaced an old style valve with 6 wires

what make was it

 

[seco services]

you say it was faulty in what way ? not the rads getting hot on hw only.

 

[DeeZarster]

Can't be certain as to the make of the former valve head, I assume Honeywell as the whole system is Honeywell.

Again, can't be certain of the fault on the old valve. sorry.