Answer by Bernhard Hofmann for Potterton EP3000 programmer HW and CH buttons...
This was resolved by disconnecting the freeze sensor. There was a separate sensor attached to connections on the right hand side (I forget the numbers and I'm not at home now). If anyone is interested...
View ArticlePotterton EP3000 programmer HW and CH buttons not working
I've got a Potterton EP3000 boiler and the programmer won't respond to me pressing the HW and CH buttons.It was working fine until I switched off the power to the plugs (to do some electrics). After...
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