Buderus Logamax plus GB142-24 Servicing Instructions page 39

page 34
15
Check the primary circulation pump for
corrosion or scale.
Is there
corrosion or scale inside the primary
circulation pump?
Check the following elements for soiling and/
or damage:
- the combustion-air inlet conduit
- the air suction tube,
- the gas orifice, see page 101
- the blower, see page 86
- the connection between the blower and the
burner
- the burner
- the heat exchanger, see page 117
- the flue gas conduit.
Are the above-
mentioned components clean and
free from damage?
Measure the inlet gas pressure (flow
pressure). See page 107.
Is the inlet gas pressure
okay?
16
page 40
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
Yes
No
No
Yes
No
Yes
Clean the primary
circulation pump (inside).
Clean and/or replace the corresponding
components.
If the required inlet gas pressure is not
available, you should consult the relevant
gas utility company.
Diagnosis
8
page 31
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