Buderus Logamax plus GB142-24 Servicing Instructions page 62

7 Diagnosis
Locking boiler fault code 4L-2
page 61
25
Check the safety sensor (page 89).
Is the safety sensor okay?
44
page 83
2 2 1
4 P
Press the "Reset" button.
New fault message
Check the wire to the safety sensor for the
correct contact (page 92).
Is the wire okay?
Check the safety sensor (page 89).
Is the safety sensor okay?
page 83
Locking boiler fault code 4P
62 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
No
Yes
The safety sensor contact is interrupted.
No
4 P
?
Yes
No
Yes
No
Yes
44
Replace the safety sensor (page 91).
Locking boiler-fault code.
Replace the cable loom or the affected part
thereof.
Replace the safety sensor (page 91).
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26
8
page 31
8
page 31