BUDERUS GB012-25K PDF

In this case ; Heat demands is blocked and pump stops 3 minutes later. Control Step Action Is the system pressure between 1 - 2 yes Control Step Action Electronic card is defect. B Switch off the appliance. Ignition lock-out flame not detected pump is running Control Step Action Dose the burner flame can be seen? Gas inlet cock open?

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In this case ; Heat demands is blocked and pump stops 3 minutes later. Control Step Action Is the system pressure between 1 - 2 yes Control Step Action Electronic card is defect. B Switch off the appliance. Ignition lock-out flame not detected pump is running Control Step Action Dose the burner flame can be seen? Gas inlet cock open? B Open the gas inlet cock. Ignition lock-out flame not detected pump is running Control Step Action Is the gas valve working?

B Switch on the appliance. B Pull out the gas valve cables. Ignition lock-out flame not detected pump is running Control Step Action Cable harness is damaged.

B Cut mains supply. B Change the cable harness. B Connect to main supply. Central heating flow temperature sensor failure pump is running. NTC is damaged or not? Cumbustion chamber temperature sensor is defect, not detected or overheating in cumbustion cham- ber pump runs continuously Control Step Action Check if combustion chamber NTC yes: B Check the cable connection. Cumbustion chamber temperature sensor is defect, not detected or overheating in cumbustion cham- ber pump runs continuously Control Step Action Check the burner gas pressure.

Are yes: B Correct the gas pressure values. If not possible, the values OK? It works in winter mode and shows the failure code with alternately. The appliances will be resetet automaticly, if the flow temp.

Fan sensor not detected. This failure only occurs if there is a sensor or the cable physical defect Control Step Action Is th fan cables damaged? B Change the cables. Target fan speed can not reached or blockage problem.

Control Step Action Is the flue gas pipe blocked? B Clean the flue gas pipe. After switching off gas flame detected even the safety valves are closed leakege Control Step Action Gas valve is defect. B Change the gas valve.

B Check the leakage. Control Step Action Check the siphon line. Is there any blockage? B3 failure still exist? Control Step Action Check if the regulator valve cable yes: B Change the cable harness or correct it. Ionisation electrode Regulator valve

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B Cut mains supply. Target fan speed can not reached or blockage problem. In this case ; Heat demands is blocked and pump stops 3 minutes later. RC Room Control More details.

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