I can’t seem to see a Gravity / Pumped switch on the back, could it be that this programmer is too old to have one?
No HW or CH, potential programmer or 3 port value problems :)
- Thread starter VickyS
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That is exactly what you do
Thank you I tried this this evening and it worked I can not turn on CH only and the boiler works and the heating comes on
So the issue now is only the boiler won’t come on when I have only HW selected. I have retaken the readings from the wires of the 3PV.
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Check the cylinder thermostat is receiving voltage from the programmer/ timer, it probably isn't.
Just double checked and it is receiving 240v.
I’ve just noticed there’s a boiler control reset and an element control reset on the cylinder thermostat. Could either of these help?
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Check it’s sending 240Vac out on demand too.
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You could try the boiler reset ,the other one is for immersion heater.
Have you had immersion on ,is the water in cylinder already heated ?
It works!!
)) Turns out it did just need the reset button! Honestly thank you all so so much for your help, I’m really grateful
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