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

10

Troubleshooting

10.1 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.
NOTICE: System damage due to frost.
The heating system can freeze up if it has been
switched off through a fault shutdown.
▶ Rectify the fault immediately and restart the
heating system.
▶ Where that is not possible, drain the heating and
DHW pipework at the lowest point.
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
For an overview of the operating and fault codes, along with possible
causes and remedial measures, see the control unit documentation
and the following Chapter 10.2 ( page 44).
▶ Hold down "Reset" for 5 seconds to clear the fault.
A reset is only possible if a fault message is flashing. The display shows
"rE" whilst the reset is being performed.
If the display then reverts to a normal operating message, the fault has
been cleared. Should the fault recur, repeat the reset two or three times.
Fig. 64 Clearing a fault with the "Reset" key
Logano plus GB402 – 6 720 804 428 (2012/09)
Troubleshooting 10
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