Xylem Lowara EPE2 16 Installation And Operating Instructions Manual page 18

Malfunction
The operating
pressure in the
heating system
fluctuates.
18
Cause
Preliminary pressure in the MAG
too low.
The MAG is faulty
Air in the system
Remedy
♦ Check and raise the preliminary
pressure in the MAG if necessary
♦ Replace the MAG
♦ Vent the system
ENGLISH