Appliance shut-off conditions, Safety shut-off

user’ manual

Appliance shut-off conditions

The boiler is protected from malfunctions by means of internal checks performed by the electronic P.C.B., which stops the boiler from operating if necessary. In the event of the boiler being shut off in this manner, a code appears on the control panel display which refers to the type of shut-off and the reason behind it.

Two types of shut-off may occur:

Safety shut-off

This type of error is “volatile”, which means that the boiler starts up again automatically as soon as the problem which caused the shut-off is removed. The display will flash ”Err” and the error code.

In fact, as soon as the cause of the shut-off disappears, the boiler starts up again and continues to operate normally.

While the boiler is shut off for safety reasons, it is possible to attempt to restore normal operation by switching the appliance off and on again using the ON/OFF button on the control panel.

If the boiler still indicates a safety shut-off, switch it off. Make sure the external electric switch is in the OFF position, close the gas tap and contact a qualified technician.

Safety shut-off due to insufficient water pressure

If the water pressure inside the heating circuit is insufficient, the boiler will perform a safety shut-off. (See table).

To re-pressurise the boiler, it will be necessary to connect the silver flexible hose supplied to the two isolating points underneath the boiler, once the hose is connected, open up both of the black quarter turn handles, once the pressure reads 1.5 bar on the display, close both handles and disconnect the hose .

If the pressure drops very frequently, there may be a water leak at some point in the system. If this is the case please contact your installer and ask them to check it.

Operation shutdown

This type of error is “non volatile”, which means that it is not removed automatically. The display will flash Err and the error

code and the red led lights up “3” .

In this case the boiler does not restart automatically, but it may

be reset by pressing the button. If the problem manifests itself again after several attempts to reset the appliance, contact a qualified technician.

IMPORTANT

IF THIS SHUTDOWN OCCURS FREQUENTLY, CONTACT AN AUTHORISED SERVICE CENTRE FOR ASSISTANCE. FOR SAFETY REASONS, THE BOILER WILL ALLOW A MAXIMUM OF 5 RESET OPERATIONS TO TAKE PLACE IN 15 MINUTES (INDIVIDUAL

PRESSES OF THE BUTTON).

Operation shutdown error table

Display	Description

1 01	Overheating

5 01	No flame detection

103

104

105 Insufficient circulation

106

107

3 05	P.C.B error

3 06	P.C.B error

3 07	P.C.B error

Anti-frost Device.

The anti-frost function acts on the central heating flow temperature probe, independently from other settings, when the electrical supply is turned on.

If the primary circuit temperature falls below 8°C the pump will run for 2 minutes.

After the two minutes of circulation (fixed) the boiler will check the fol- lowing:

a)if the central heating flow temperature is > 8°C, the pump stops;

b)if the central heating flow temperature is between 4 and 8°C, the pump will run for another two minutes;

c)if the central heating flow temperature is < 4°C, the burner will fire (heating position) at minimum power until the temperature reaches 33°C, the burner will go off and the pump will continue to run for two minutes.

The anti-frost device activates only when (with the boiler operating cor- rectly):

-the system pressure is correct,

-the boiler is electrically powered,

-there is a supply of gas.

47-116-52, 47-116-53, 47-116-51 specifications

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user’ manual