OK think i understand but won't that mean that both HW off and HW on are live?
3 port valve failure
- Thread starter bobplum
- Start date
OK think i understand but won't that mean that both HW off and HW on are live?
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No I was assuming that with the programmer removed, HW OFF should return to 0 Volts.
If it doesn't there's a problem elsewhere or the HW thermostat is satisfied.
no that was a stupid question, that cant happen as the progrmmer is removed.
No now you mention it that is possible, but the important thing is the HW thermostat will need to be in demand to get the boiler going for this check.
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no that was a stupid question, that cant happen as the progrmmer is removed.
No now you mention it that is possible, but the important thing is the HW thermostat will need to be in demand to get the boiler going for this check.
I really appreciate the help you are giving me here.
Done that and the hot water now runs, and the pump/boiler goes on and off as i turn the cyl stat up and down.
Also the 3 port valve has switch to HW only.
great, now add another Live link to CH ON as well and you should have both Heating and HW, with the valve at mid position.
OK done that, now everything seems to be as it should, heating going on and off on the room stat, HW on and off on the cyl stat and the valve moving to the correct postions at the correct time.
so i guess that means everything is wired correctly and everything is working OK without the programmer, therefore the programmer must be broken??
Yes it does look like a duff programmer.
The only jumper I'm struggling with is the one marked "I".
"7" will be 7 days and "P" for a fully pumped system which yours is.
Maybe someone else can give better advice on that.
The only jumper I'm struggling with is the one marked "I".
"7" will be 7 days and "P" for a fully pumped system which yours is.
Maybe someone else can give better advice on that.
For that one it can be set to L or I.
Many thanks for your help, I'll get a new one asap.
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