Bosch Therm-BR1 Receiver not receiving?

I have a Bosch Therm BR1 receiver and a BRTRF Digital room thermostat. The mains power to the house was switched off for about 30 minutes whilst a new electricity meter was installed. When power was switched on the lights on the BR1 remained off. There is no red light on the receiver.I am not able to reset the receiver and both the thermostat and receiver will not communicate. Help