On 06/10/2019 21:17, John Rumm wrote:
On 06/10/2019 13:00, ARW wrote:

The water to the header tank was turned off and the system drained down.

Swapped the mid position vale and it will now not fill back up.

The odd thing is the header tank did not drain off - it was still full
when I went to turn the water on.


Suggestions?

Some crap getting sucked into the feed/expansion pipe connecting to the
CH header would be one possibility.

Should have added, that a wet'n'dry vac hose held under water and over
the outlet of the CH tank, might be worth a shot to see if you can suck
some water back. Failing that, a hose stuffed down it, might fors some
water though.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/