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10 Troubleshooting
Logano plus GB402 – 6 720 804 428 (2012/09)
43
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.
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
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.
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