Recently had the wireless texecom system fitted, however the smart com wasn't working properly. Contacted Texecom, diagnosis was the com port was frozen. Went through a few steps to re-set the system, ie. power off from mains & remove back-up battery. This did fix the issue, however now none of the 3 door chimes work anymore. The sensors do work as i have no issue setting or disarming the alarm. I have access to the engineer code, just need some advice please....