Cheers not reaching temp. F and E overflows.

[armyash]

Getting 240 on the white when calling for heat. 240 goes when demand is turned off. That's what I should be getting?

 

[armyash]

I usually change the entire thing if I can.

 

[ShaunCorbs]

white one is heating

are you getting anything on grey and orange (when hot water off?)

 

[armyash]

Nothing with hw off.

 

[ShaunCorbs]

Nothing with hw off.

grey ?

 

[armyash]

240 hw off. Correct?

 

[ShaunCorbs]

240 hw off. Correct?

yes

 

[armyash]

So, do you reckon change 3 port and problem solved?

 

[ShaunCorbs]

So, do you reckon change 3 port and problem solved?

should be

 

[armyash]

Thank you for taking the time to read the thread and reply ShaunCorbs.

Thanks for everyone else's replies.

 

[ShaunCorbs]

Thank you for taking the time to read the thread and reply ShaunCorbs.

Thanks for everyone else's replies.

i always re wire the wiring centre unless ive wired it as well

 

[armyash]

I do that on a boiler change, as I change components also. Good idea to so more often though to make sure it's correct.

 

[armyash]

OK have changed the 3 port this morning. Its now doing what it should, on and off for each demand.

Rads getting nice and hot.

HW getting through coil OK. Didn't get any water from the coil when disconnected and capped.

Hoping thats solved it.

Will find out today.

 

[armyash]

Don't know what else it could be if not.

The ball valve that time changed on the F and E a few weeks ago has been getting sprayed with water from vent at some point as theres dirty ch water marks all over the shiny brass.

 

[armyash]

Thanks for all the replies, I received a text this morning to say heating working a lot better and no running overflow.

Perfick.