Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

View the thread, titled "Three-way diverter valve -electrical problem" which is posted in Central Heating Forum on UK Plumbers Forums.

Hi
I have a fully pumped heating system fitted with a Drayton MA1 diverter, after the summer run the heating stopped coming on, so I replaced the Actuator head, however I have found the actuator is stuck on H (Heating), I have turned down both heating and cylinder stat - still stuck on H.
The actuator is warm.
Removed power completely and the valve has now returned to W (Water)
As far as I am aware I replaced like for like on the wiring, cut off leads to ensure same fittings.
Any suggestions
 
What about its last port of call?, if the last requested position was CH then it will remain in this position even if both CH or the HW is not calling.
Thanks, followed Drayton Fault finding/Test video right to end when he says valve will stay in H and head will get warm.
What was also confusing me was that the programmer was not on for heating or hot water.
Now need to think a bit more and double check problem, if it is still there.
 
Remember, the HW even when porogrammed off will provide 230V via its OFF contacts to the grey wire as well as from the satisfied contacts on the HW cylinder stat which will keep the valve in its CH only position, even if both stats are satisfied or you switch both off, if you were then to switch on the HW only and turn up the cylinder stat briefly, then the valve will lose its 240V to the grey wire and should motor back under spring pressure to the HW position, when/if you then switch off the HW, you will again then put 230V to switch2 but this is now open so has no effect. (or something like that)
 

Official Sponsors of Plumbers Talk

Reply to the thread, titled "Three-way diverter valve -electrical problem" which is posted in Central Heating Forum on Plumbers Forums.

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Thread starter

Joined
Member Type
DIY or Homeowner

Thread Information

Title
Three-way diverter valve -electrical problem
Prefix
N/A
Forum
Central Heating Forum
Start date
Last reply date
Replies
3

Thread Tags

Tags Tags
valve

Thread statistics

Created
Rayp,
Last reply from
John.g,
Replies
3
Views
1,003

Weekly or Monthly Email Digest

Back
Top