BT4600 phone system (1+1). I have switched off the power to my phone system and not realised it . Away for a few days and spotted this on my return. Switched on power to system again and cannot get it to work. I left on for 24 hours to re charge, but does not seem to be re charging as 'C' message just appears on the base unit. I am not getting any display on the main handset or the extension handset. All I get is a pulsing on both handset displays but nothing else on the screens. I have replaced the rechargeabe batteries in both handsets but this has had no effect. What should I try next

rf ashby, January 2023

Disconnect the batteries and the mains power for ten minutes, then reconnect and try again.

You may need to re-pair the handsets.

Manual here:

https://www.bt.com/help/user-guides/phones/landline-phones/cordless-phones-with-answer-machine/bt4600

Jgd, January 2023