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These errors mentioned above, are listed according to their priority or-
ders.
In the case boiler goes through non-volatile lockout, user should switch
reset button after literally solving the main cause of the problem.
• If ‘no-flame fault’ arises, be sure that gas valves are open and gas
flow exists. During the first start-up the boiler may lockout since the
gas line may contain air. This is quite normal. Reset the boiler 2 – 3
times, waiting 20 seconds between the attempts. If the boiler goes to
lockout state continuously consult your authorized service. This error
occurs after three ignition attempts for natural gas and one ignition
attempt for LPG.
• Spurious flame check will be performed before ignition attempts, so
that real flame can be differentiated from the fake one.
• If lockout is caused by excessive temperature, wait for the system
water to cool down before another try. The flow pump control rema
-
ins active depending on the type of demand in progress to execute
any specified pump overrun functions (45 seconds for CH with room
thermostat and 18 seconds for DHW demand). Several unsuccessful
trials may mean a service call is required. Consult your authorized
service dealer.
• If “H2O pressure switch cut-in” fault arises, this means there is not
enough water in the circulation. In order to avoid this problem, the
boiler should be filled with water as it is explained in water filling part.
• For any other fault or repeated lockout conditions, consult your autho
-
rized service dealer.
5.2.1 Some Typical Problems
Boiler is running noisy!
Turn off the boiler. Release the air in the heating system. Fill water if
necessary. Start the boiler. If there is still noise, call the service.
There is continuous water loss!
Check if there is any leakage at the heating system. If not, call the ser-
vice.
There is no or insufficient hot water flow through the taps!
