Search results

Update - borrowed multi-meter from work, tested room stat and cylinder stat signals in wiring centre, both healthy 230+, however orange wire from valve reading 42-44, so now confirmed that boiler is not getting signal from valve to operate. This is a new salus valve head on to the original...

MisterDubya, sorry to disappoint you but this is a real situation, my CH is only working because the HW is making the boiler fire. As for the midposition on the valve, maybe I've misled by stating this, all I can say is that on CH only, the pump starts and the valve moves from HW (port B...

Matt1e - Yes boiler fires for HW & CH, and HW only but not CH, but fan and pump operate. System has always been fully pumped and until saturday was working fine. What else can I check which adds to the CH call for heat cycle to cause the boiler to fire?

The boiler is on the ground floor, and the pump and valve are in the loft so I cannot physically check both at the same time. Part of the start up routine for the boiler is that the fan runs, which was not happening before, the pump and the valve also appear to operate when calling for heat...

Sorry, yes valve moves to mid position, and pump does activate.

All controls off, then CH on and calling, pump moves to mid position and fan activates but boiler doesn't fire. Call for hot water and all OK. Any suggestions for what to check/do next?

The boiler must be acknowleging the call for heat from the CH side as the boiler now reacts by activating the fan, but will not go through to firing up. But if I then call for hot water too, the boiler fires straightaway.

I've checked the 3pt valve connections to the wiring centre and the boiler at least now acknowledges the call for heat, the fan starts but then stops. If I put the hot water on the the boiler fires. Any suggestions?

No the system has not worked correctly since all the parts were changed, except the valve now operates properly Nothing has happened since it last worked, except I've changed out all the components When DHW & CH are calling, 3pt valve in mid position and water is getting around the rads...

I've got one somewhere but all the replacements have been direct, with no wiring alterations and all was fine yesterday morning.

I would be grateful for any assistance possible with the following problem I have with my Potterton Profile 50e boiler and associated controls. The system appears to be fully operational when the programmer is calling for hot water, but if calling for heating, nothing happens. I have...