Recently changed my keypad for an updated version to fit 9651 Scantronic. After installing it which was fitted whilst in installer mode, it has come up with low battery. I since replaced the battery for new bearing in mind the original was a year old. Did the half reset on the panel now can use the code but still showing low battery and cant use the factory reset number as it says wrong code. Do i need to ask an engineer to come out and do a reset.