As a heads up to anyone finding this thread in the future you're probably best just to replace the motor as per this thread here:
https://www.diynot.com/diy/threads/worcester-heatslave-26-32-hot-water-but-no-heating.352118/
Ah, I did read in the comments of the Corgi that someone had issues because the actuator didnt line up correctly with their particular model (y)
Good to know there is actually an alternative out there !
This looks quite different to what i have - would there be a possibility its proportions...
Its not so much the V4073A im finding everywhere but V4043H
Are V4043H and V4044F1125 interchangeable ?
*Edit*
Apparently they are not, due to the V4043H being for 2 port
I am finding it near impossible to find a V4044F1125 actuator anywhere
Has anyone tried one of these...
Both while:
stat calling and firing/active
stat calling and inactive
brown 245V
red 245V
without much variation apart from initial firing
all the rest appear to be 0
(quite awkward to get a probe in but pretty sure)
I’ve also had the valve manually overridden
which likely...
I have the service manual, it doesn’t give details on diagnostics with a multimeter but as far as the flow chart asserts, it does switch values but not being able to maintain the actuator being in the energised position would then give this behaviour
I'm not sure there is much else I can do to...
Ah yes, thanks for that I see it now
the model is as above + OSO
Version: ANE
Green dials & switch but without the screen I've seen on others - Hope this helps
Is there a test I can do with the diverter valve?
Hi all - thanks for your responses
I was away for the weekend but can now confirm the switched line is going live (240v)
To further clarify – this is a long standing setup which has been working fine
so particulars with stats have now been safely ruled out with having tried a brand new basic...
Hi thanks for your quick responses
I went and got a honeywell style super basic 3 wire analogue dial one
I have a multimeter so i guess i'll test for an output
Between now and then if any other ideas come to mind - by all means fire away !
Worcester heatslave 15/19 (est 20 yr old)
Not responding to stat requests - otherwise working in all other respects
new stat tested, has worked for a time, then stops responding so intermittent issue
Adjusting the heating level dial will still fire it up & it will finish its run till up to...