
- 21 -
fig. 12 - Operating signals of the HP circulation pump
LED Off:
The circulation pump is not working, no power supply .
Green LED On:
The circulation pump is operating normally .
Green LED flashing:
Venting mode in operation (10 minutes) .
Red/green LED flashing:
Operating error with automatic restart .
Red LED flashing:
Operating error, consult your heating engineer .
Waterstage / OPERATING INSTRUCTIONS / 2010 - EN