aissecur

I had exactly the same issue, wish they would have HDMI, BNC & VGA outputs so you would have plenty of options

Its not a bad system all in all, and if cost is the main consideration I would just replace the keypad. Be warned there are two types of keypads available - 4 wire & 6 wire ,depending on how old your panel is, it may only accept the 6 wire version (6 wire now obsolete but I've seen an odd one listed on eBay) The newer versions accept both the 4 wire & 6 wire keypads. They do a blue LCD version now which looks good. Do you know when it was installed? Have you more than one keypad? Do you set with Gtag Fobs or an ACE?

If the engineer has set the panel up for engineer reset on tamper & system is tampered it usually says "Service Due" If it is service timer, usually warns 2 weeks before then says lock out, when you try & set it will say use code (4 random numbers) I think you can [...] & allow to be used for a further 2 weeks but ultimately think it will be an engineer call out..

I would suggest it may be the alarm service timer, prob will require an engineer call out