Buderus Logamax GB062-24 KDE H V2 Service Manual page 16

4
Fault finding
Faults that are not shown on the display
Fault description
Combustion noise too loud; rumbling noises
Water circulation noises
Heat-up lasts too long.
Flue gas readings incorrect; CO content too high.
Ignition too strong, or poor.
Condensate in air box.
DHW outlet temperature not reached.
DHW volume (flowrate) not reached.
No function, the display remains dark.
Tab. 8
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Logamax Plus GB062