Baxi Luna 3 Silver Space Series Operating & Installation Instructions Manual page 59

16.2 SYSTEM PRESSURE RECOVERY PHASE (
Whenever system pressure falls below ~0.8 bar, the electronic board enables the automatic pressure recovery phase as
described below:
1) the pressure switch sends a demand for water and the message "FAULT 18" appears on the remote control unit
display;
2) after the filling time has elapsed (4÷5 minutes), if system pressure has not reached the correct value, the electronic
board interrupts filling and the "E19 FILLING" error message appears on the remote control unit display;
3) press OK to resume filling (starting from point 1).
CAUTION: if the E19 error message reappears at the second attempt to restore system pressure, call the Authorised
Service Centre.
If the inlet electrovalve is stuck, this can be manually released by turning the screw with a screwdriver as shown in figure
5, taking care to reposition the valve over the C punched on the valve body.
Figure 5
Figure 6
The system may be filled manually by turning the screw on the electrovalve body (fig. 5).
After filling, reposition the screw as shown in figure 5.
CAUTION: The inlet tap in the boiler (figures 5 and 6) must always stay open to allow the system to be filled automatically.
Close it to disable the automatic filling system. The boiler will continue to work as usual.
INSTRUCTIONS FOR FITTERS
A
Normal position
The tap must always remain open to allow the system to be filled
automatically.
B
Manual position
59
E18
)
925.523.1 - EN