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the home screen displays the current temp, date and time etc but when you want to turn up the temp or edit anything i am presented with the locked screen , see the second pics

Polypipe smartstat programmable touchscreen thermostat. Power is from boiler hardwired. Boiler serviced in June 2021. Other half was fiddling with controls trying to edit time and date but went on the wrong button and unknowingly activated the screen lock. No clue what went in as pin number...

OH accidentally locked the screen don't recollect the four digits at all. Tried switching off power and on , still screen locked. This is a wired thermostat not RF. Is there any way I can sort out. Factory reset also can't be done either. Any advice thankfully received.

Thank you very much muggles for the very helpful advice. I reconnected the blue wire to the neutral and it is working. I am not confident of correcting the other wrong connections as you mentioned, but will get a qualified person in at some point. Many thanks for your help. Guisep.

Thanks you very much CBW, I connected the loose blue wire to neutral and the central heating is back on. Very grateful.

While moving my Hive single channel receiver one wire has come loose and I dont know where to re - attach it. See pictures. Black cable is from the 2 port valve (detach pro) and the white cable is from the Baxi combi boiler 830. Central heating not working though hot water is fine. Does the...