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1.3. Boiler shut-down
When any malfunction occurs, the boiler automatically shuts down.
Refer to no. 1 chart (on page 6) in order to detect the boiler operation status.
In order to identify plausible malfunction origin, see
no. 6 paragraph “Troubleshooting”
at the end of the manual.
In relation to the type of malfunction, proceed as described hereafter.
1.3.1. Burner shut-down
When the burner shuts down, no. 2 LED turns on (red). Should this happen proceed as follows:
- Check the gas stopcock to be open, and gas mains have gas in them e.g. by lighting a kitchen range burner;
- Once gas presence is verified, reset the burner by turning no. 5 selector (pic. 1) to its reset position
: if the equipment does not
restart and shuts down again, after performing two attempts, contact an authorized Service Centre or qualified personnel for service.
Should the burner shut down frequently, signaling a recurrent operation malfunction contact an authorized Service Centre or qualified
personnel for service.
1.3.2. Shut-down due to overheating
When central heating flow overheats, no. 1 LED (pic. 1) flashes (red). Should that happen, contact an authorized Service Centre or
qualified personnel to carry out maintenance work.
1.3.3. Shut-down due to low water pressure
In case of shutdown due to water pressure switch intervention, no. 1 LED flashes (yellow).
Fill up the boiler by opening the loading tap A (pic. 2), located in the lower area of the boiler, next to the hydraulic connections.
Water pressure must be 1-1.3 bars while the boiler is cold.
In order to restore water pressure, proceed as follows:
- Turn the filling tap counter-clockwise to let water into the boiler and keep it open until no. 5 pressure gauge (pic. 1) shows that a
pressure of 1-1,3 bars is reached; now close the tap by rotating it clockwise.
Should boiler shuts down frequently occur it means there is boiler malfunction in progress. Contact qualified personnel or an authori-
zed Service Centre for maintenance.
Once the system is filled, close the tap properly. If the tap is not properly closed, as pressure increases,
boiler safety valve may open and water flow out.
1.3.4 Shut-down due to flue system incorrect draught
Should the boiler shut down due to an anomaly in the air intake and/or flue gas discharge system, no. 1 LED (pic. 1) turns on ( yellow
). Should that occur, contact an authorized Service Centre or qualified personnel for maintenance.
1.3.5 Shut-down due to malfunction of temperature probes
Should the burner shut down due to a malfunction of the temperature probes, no. 1 LED (pic. 1) flashes as follows:
- yellow/red for CH probe;
- red/green for DHW probe.
When that happens, contact an authorized Service Centre or qualified personnel to carry out maintenance.
Pic. 2 - Loading tap
