Danfoss CF-RS Instructions Manual page 12

Instruction CF-RS Standard Room Thermostat
7. Troubleshooting
Error Indication
The LED flashes every
5th minute
The LED flashes
The LED flashes 5 times
VI.UH.L1.52
1
Possible Cause
Low battery
Critical low battery
Installation/Link Test is
unsatisfactory
Produced by Danfoss Floor Heating Hydronics 08.008