BGH BSBSIC24CTK Manual page 36

Troubleshooting
1. Operation lamp flashes
Operation lamp flashes at 5Hz
Judge 1: Indoor temp. sensor is abnormal
Check whether the resistance of the evaporator temp. sensor is
correct according to Annex 1
Judge 2: Room temp. sensor is abnormal
Check whether the resistance of the room temp.
sensor is correct according to Annex 1
3 2
Yes
Yes
Replace indoor PCB
No
Replace evaporator temp. sensor
No
Replace room temp. sensor