Hi Karl,
I am almost too ashamed to tell you what happened today. My neighbour came round with his voltmeter and checked the grey wire as you advised. He happened to pick up the actuator and a small spring and a tiny piece of plastic fell out. The bit of plastic had broken away from...
Hi Karl
Thanks for the advice. There may be a bit of a delay with the voltmeter from next door so if he doesn't come around this morning I think it best to go out and buy one. Does "Digital Multimeter" sound right for the job? If so they do one of those at Screwfix. Do you need any...
O.K. Karl I've finally got the message. Thanks for the photo.
The black indicator is in the position H which on your photo is on the right and it won't move over even when it should go to "Hot water"
It seems to me who knows very little that it might be one of two things
1)...
Hi Karl.
Sorry I'm causing you so much trouble.
When viewing the valve in it's normal position there is a black lever which is on the left hand side of the unit. That's not what I called the tell-tale.
The one I meant is a small black plastic indicator which moves across in...
Many thanks Karl for such a quick reply.
I've taken the motor etc. off the valve and set the control panel to H/W only and turned up the hot water cylinder thermostat. The tell-tale at the top does NOT move from it's present position on the far left and no hot water is going into the tank. I...
My central heating system refuses to heat the domestic hot water although the central heating is fine. The Drayton mid position valve tell-tale at the top remains on the left and does not move over when I select "hot water only" at the control box. I have taken off the motor assembly and can...