This could indicate a loss of power to the machine, or the telephone line could be faulty. Check that the unit is plugged in and switched on properly and that it is connected to the landline.
The flashing light could also be a warning that the battery is running low and if the alarm unit makes an audible bleeping sound, this could indicate that you are also experiencing a power cut so you will need to check your electricity supply.
If your alarm unit’s battery is low, the CarelineSOS office will automatically be alerted and will reset your unit so the light stops flashing. They will then be in touch to advise you regarding changing of the batteries.