We may have found other answers which could help you.
Click here for Power Battery Type
Gardtec 300/500 series- key pad shows 1u. ?
Gardtec cpx lost chime yet again?
Stuck button on gardtec 500?
Gardtec 800 system error code -t after power cut?
Door chime?
Could anyone help me with gardtec 360/580 anti-code reset?