Troubleshooting; Recognising The Operating State And Resetting Faults - Buderus Logano plus GB402 Operating Instructions Manual

6

Troubleshooting

6.1 Recognising the operating state and
resetting faults
If a fault has developed, the fault code flashes on the
control unit display. The programming unit shows faults as
plain text messages.
A fault has developed if the display flashes and indicates
something other than the current boiler water temperature
or an operating message.
Example: "6A" = the burner will not start
B Hold down "Reset" for 5 seconds to clear the fault.
The display shows "rE" whilst the system is being reset.
The reset is only possible if a fault message is flashing.
If the display then reverts to a standard operating
message, the fault has been eliminated. Should the fault
recur, repeat the reset two or three times.
Fig. 11 Clearing a fault with the "Reset" key
If a fault cannot be reset:
B Note down the fault message and notify a heating
contractor.
NOTICE: System damage due to frost!
The heating system can freeze up if it has
been switched off through a fault
shutdown.
B Rectify the fault immediately and
restart the heating system.
B Where that is not possible, protect the
heating system against frost by
draining the heating and DHW
pipework at the lowest point.
For more information on possible faults, see the
installation and maintenance instructions as well as the
control unit documentation.
Logano plus GB402 - Subject to technical modifications.
6
Troubleshooting
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