Buderus Logamax plus Service Manual page 24

Gas wallhung boiler
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3
Failures / Errors
I I
is flashing.
MAP not selected (Fan speed adjustment according the flue pipe length)
Attention : The appliance is delivered with MAP value "0" (service function : 2.b.d). In this condition the
appliance doesn't run. The "I I" symbol will be shown on display alternately.
Control Step
1.
MAP value is according the flue gas
pipe length not selected.
2.
Electronic card is defect.
24
Action
yes:
B Adjust the MAP value via service fonction 2.b.d.
(for details, see flue gas instruction manuel)
I I symbol still exist ? -->2.
no:
-->2.
B Switch off the appliance.
B Cut mains supply.
B Change the electronic card.
B Connect to main supply.
B Switch on the appliance.
GB012 - 25K

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