Fondital TAHITI CONDENSING KC24, Installation, Use And Maintenance Manual

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1.3. Boiler shut-down
Should any malfunction occur, boiler automatically shuts down.
Refer to no. 1 and no. 2 charts (on page 7) for boiler status detection.
In order to detect the probable malfunction causes, see, in addition to no. 2 chart, no. 7 “Troubleshooting” paragraph at the end of the
manual, as well.
Follow the described procedure with respect to the type of shut-down.
1.3.1. Burner shut-down
When the burner shuts down due to flame extinguishing, no. 5 LED (red) starts flashing. Should this happen proceed as follows:
- check the gas stopcock to be open, and gas network is actually providing service, by lighting a gas powered kitchen appliance such as
a kitchen range or oven.
- once gas presence is verified, reset the burner by turning no. 9 knob (pic. 1) to the reset
position for 2 seconds, and then to the
desired mode position: should the boiler not start shut down, and after performing three reset procedures, contact an authorized Service
Centre or qualified personnel for service.
Should frequent burner shut down occur, a recurrent malfunction might be present: contact an authorized Service Centre or qualified
personnel for service.
1.3.2. Shut-down due to overheating
When CH flow water overheats the boiler is shut down, no. 3 LED (red) starts flashing.
Should the above happen contact an authorized Service centre or qualified personnel for service.
1.3.3. Shut-down due to incorrect fluid circulation
Should CH water circulation not be adequate, the primary flow switch intervenes, the boiler is shut-down, and no. 6 LED (red) starts
flashing.
The following 2 instances may have occurred:
a) no. 12 water pressure gauge (pic. 1) indicates a pressure value lower than 1 bar; in this instance follow the loading procedure as below
described:
- turn the loading tap (pic. 2) counter-clockwise in order to allow water inlet;
- keep the loading tap open until the water pressure gauge reads 1-1.3 bar;
- close the loading tap by turning it clockwise;
- reset the burner by turning no. 9 knob to the reset
position for 2 seconds, and then to the desired mode position.
Should the boiler shut down again, contact an authorized Service Centre or qualified personnel for service.
Once the loading procedure is completed, properly close the loading tap. Should the tap not be appropriately closed, as
pressure increases, CH system safety valve may open and water flow out.
b) no. 12 water pressure gauge (pic. 1) indicates a correct pressure value (1-1.3 bar); in this instance contact an authorized Service Cen-
tre or qualified personnel for service.
LOADING TAP
pic. 2 - Loading tap