Lever on 3 way

[NotebookNewport]

i have an old system with hw tank.
Problem with loud clicking from 3 way diverter valve.
Maybe gearbox had it?
Anyway
If I manually lock the lever what will work and what won’t.
Same if I leave it to click?
Controls have hot water and hot water and central heating switch.
Whole system being replaced in a months time so just need to limp along until then

 

[Daveydub]

If you lock the lever, the valve will serve heating and hot water.
If you put the heating on it will release the lever when heating goes off again so..... Lock the lever, put on hw only, remove cylinder stat from side of cylinder so that it does not turn heating off when cylinder is up to temperature

 

[NotebookNewport]

Hi Daveydub
The lever moved off the locked position as you said. I had it on heating and water.
Initial problem... if I move the lever towards the locked end when it is clicking a few more mm it stops clicking and the pump kicks in. Thinking micro switch but can’t see one. Maybe barking up the wrong tree
Ok. If I remove the stat then it will cycle on the room stat? Also how hot will tap water get? Not that I am bothered.

 

[ianmcd]

remove the front part of your heating programmer and see if you have a wire going into the HW/off terminal , if you dont that is why the valve is clicking, very common mistake when fitting these

 

[NotebookNewport]

remove the front part of your heating programmer and see if you have a wire going into the HW/off terminal , if you dont that is why the valve is clicking, very common mistake when fitting these

Hi
Not fitting a new one. This has been running for years. Thanks for input though

 

[ianmcd]

Hi
Not fitting a new one. This has been running for years. Thanks for input though

I never said fit a new one I said check if the existing one is wired correctly

 

[NotebookNewport]

I never said fit a new one I said check if the existing one is wired correctly

Surely it wouldn’t have worked if that was the case for the last 20 years

 

[Daveydub]

Ok. If I remove the stat then it will cycle on the room stat? Also how hot will tap water get? Not that I am bothered.

No. The roomstat will not now do anything (water only position). It will cycle on the cylinder stat so remove that from cylinder.

 

[NotebookNewport]

No. The roomstat will not now do anything (water only position). It will cycle on the cylinder stat so remove that from cylinder.

Ok. So the heating will just keep driving. So when it gets too hot I turn it off ?

 

[Daveydub]

Only control that you will have is the stat on the boiler. Obviously not the cheapest way to run your heating but keeps you going for the time being

 

[NotebookNewport]

Only control that you will have is the stat on the boiler. Obviously not the cheapest way to run your heating but keeps you going for the time being

Ok. So although the stat isn’t on the tank it will regulate the temp via air temp around it. So it will go in and out on it.
I think I can isolate it as all entry exit points have manual valves. The pump has one above and below but no red handle on them but I take it that I can remove a handle off another. I am an electrical tech so can isolate and test and rewrite. Cheapest place if I change it?

 

[Daveydub]

it will regulate the temp via air temp around it. So it will go in and out on it.

Cylinder stat is probably set to 55/60. Take a lot of heat to make that go off. Could turn it down (probably not by enough to count) but then you are trying to control whole house heating by taking the temperature in the airing cupboard. It is only for a month. Use time clock & boiler stat to control

 

[NotebookNewport]

Last question. Does it sound like a replacement would fix it ?
Also
Are all 3 ways the same. Pop to Screwfix etc.
Cheers

 

[Daveydub]

Does it sound like a replacement would fix it ?

If it is faulty then yes, if it is a faulty cylinder stat or time clock then no.
With the cylinder stat taken off it will be "calling". put on htg & hw, turn roomstat up, does valve move & pump/boiler come on?
Now turn cyl stat down(you should hear it click). Now does valve move etc.
Turn cyl stat back up & select ch only at clock. What now?
Commonest valves are either ACL (Drayton) or Honeywell. Any make on yours or can you identify on screwfix site?

 

[Daveydub]

Can we call it a diverter valve from now on. Rferences to 3 ways in my emails may alarm the missus