I'll assume it's a Texecom Veritas 8c.
A fuse or two have been blown inside the control panel.
It or they need to be replaced. LIKE for LIKE, do NOT change the value of a fuse.
I'd suggest the one you are going to want is going to be a 500mA
Before opening the panel to see what you will need, turn the Mains Off.
acorn, February 2013