Have installed new boiler and programmer. Now we only have hot water if the setting is on hot water. When the setting is on heating/hotwater the heating is the only thing getting hot.
HONEYWELL 3 PORT VALVE PROBLEM
- Thread starter greenrayburn
- Start date
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is the wiring correct ?
check the grey wire hasn't got power to it.
check the grey wire hasn't got power to it.
the grey wire has got power to it all the time on hot water or central heating
well it shouldn't have.
what have you wired it to to give perm live ?
perm live to the grey will constantly hold in the valve in ch postion.
what have you wired it to to give perm live ?
perm live to the grey will constantly hold in the valve in ch postion.
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Its wired to a Honeywell ST699 terminal 7 and to the cylinder stat.
should be 3 wires in term 7.
grey from valve.
wire from cylinder stat satisfied.
wire from programmer hw off.
if you put programmer hw on and turn cyl stat up grey should go dead.
grey from valve.
wire from cylinder stat satisfied.
wire from programmer hw off.
if you put programmer hw on and turn cyl stat up grey should go dead.
As your name suggests, do you have a Rayburn? If so, consult the M.I's rather than the Honeywell diagram. Rayburns confuse many a heating engineer and sparks, as they do not follow conventional Y plan wiring.
just one thing. We fitted a Grant vortex boiler and on the boiler terminal block the live goes to no 10 which is linked to no 9 and no 8 on the wiring centre. No 9 goes to the live on the pump and no8 is orange on the 3 port valve and no 1 on the cycl stat.
(No 7 on wiring centre goes to grey on the 3 port vavle,and No2 on the cycl stat. and No7 on the programmer)
Which number is hw off in control unit (book is awful) Really greatful for the help
(No 7 on wiring centre goes to grey on the 3 port vavle,and No2 on the cycl stat. and No7 on the programmer)
Which number is hw off in control unit (book is awful) Really greatful for the help
no 7 is right.
you need to check what one is giving a perm live.
2 from stat or 7 from programmer.
take the programmer hw off out of the term
turn programmer hw on stat call, hw off wire you took out should be dead.
you need to check what one is giving a perm live.
2 from stat or 7 from programmer.
take the programmer hw off out of the term
turn programmer hw on stat call, hw off wire you took out should be dead.
I am working from 2 wiring diagrams (honeywell y plan and Grant vortex). And you said that no 7 on the wiring centre should not be live. The only difference between the two wiring plans that i can see between the two is a live from the boiler terminal block to No 8 via a link wire from 10 to 9 to 8.
thats ok just stops having so many wires in one terminal.
do as i said above.
do as i said above.
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