The temperature sensor is either disconnected, has broken wires or needs to be replaced. The replacement part SKU is FGD0101.
Articles Tagged: fgd400
My Sensaphone 400 is locked out and will not let me enter commands, how can I fix this?
If the LED is blinking the unit is in StandBy mode. To open the unit up to receive commands again simply press the – RUN/STANDBY – key to take the unit out of StandBy mode.