BlueHelix ALPHA C
304
EN
cod. 3541U152 - Rev. 01 - 04/2021
Proceed in reverse order to refit the front panel. Make sure it is correctly hooked to the upper fa-
stenings and is correctly positioned at the sides. Once the screw
"1”
is tightened, the head must
not be below the lower reference fold (see fig. 31).
fig. 31- Correct position of front panel
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a yearly ins-
pection, providing for the following checks:
• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function cor-
rectly.
• The fume exhaust circuit must be perfectly efficient.
• The sealed chamber must be tight.
• The air-fume end piece and ducts must be free of obstructions and leaks
• The burner and exchanger must be clean and free of deposits. Use suitable brushes for clea-
ning. Never use chemical products.
• The electrode must be properly positioned and free of scale.
The electrode can be cleaned of incrustations only with a non-metallic brush, and must NOT
be sanded.
• The gas and water systems must be tight.
• The water pressure in the system when cold must be approx. 1 bar; otherwise bring it to that
value.
• The circulating pump must not be blocked.
• The expansion tank must be filled.
• The gas flow and pressure must match that given in the respective tables.
• The condensate evacuation system must be efficient with no leakage or obstructions.
• The trap must be full of water.
• Check the quality of the water in the system.
• Check the condition of the insulation of the exchanger.
• Check the gas connection between the valve and Venturi.
• Replace the burner gasket if damaged.
• At the end of the check, always check the combustion parameters (see "checking the combu-
stion values").
3.4 Troubleshooting
Diagnostics
LCD Off
Make sure the card is powered: using a digital multimeter, check for the presence of supply volta-
ge.
In case of no voltage, check the wiring.
If the voltage is sufficient ( Range 195 – 253 Vac), check the fuse
(3.15AL@230VAC)
. The fuse
is on the card. To access it, see fig. 19.
OK
NO
1
1
