G O M - 영 문
74
When the pump runs, the flow is continuously checked.
In case of absence of circulation (for example for the closure of all the radiators
thermostatic valves) the pump remains in ON condition, the burner ignition is avoided
and the error code E02 is shown.
As soon as the circulation returns, the error disappears and the burner ignition is enabled.
On the other side if, for example, the primary flow switch is broken because of electrical
short circuit, the burner ignition is still avoided and the error code E13 is shown.
If the primary temperature probe failure occurs (interruption or short circuit) the
burner switch off and the fault code is displayed (E05 ; E06).
If a DHW temperature probe failure occurs (interruption or short circuit) the DHW
service is avoided and the fault code is displayed (E07 ; E08).
The DHW temperature probe is not checked if the external water storage is set.
If the temperature in the heat exchanger overcome 100℃, the error code E16
appears on the display up to this temperature comes down under 65℃, and the
pump continue to run.
If during this time a request of injection occurs the boiler falls in a lock out condition
and stay in that condition up to the reset of the boiler.
In order to reset the boiler is necessary to remove the cause of the overheating and
to wait up to the temperature goes down under 65℃.
If the electrical supply is different from what the PCB is set, the boiler doesn
’
t start
and error code E15 appears on the display.
The boiler has a function that permit to force the boiler to run in Central Heating
condition for 15 minutes without any gas modulation.
This function permit to the serviceman to make combustion and efficiency test
without any interference by the regulation system; still remaining in a safe condition.
This function is settable as follows:
•
Press the button and for at lest 10 sec up the digits disappear.
Releasing the button the serviceman function starts.
Primary Flow Checking
Temperature Probe Failure
Serviceman Function
Lockout for High Limit Switch
Frequency Supply Error