34
Fault
Cause
Measures
Excessive flue gas
temperature
Excessive gas
throughput
Adjust gas throughput in accord-
ance with rated boiler output.
Check condition of boiler secondary
heating surfaces; clean if required.
Whining noises
Incorrect CO
2
set-
tings
Adjust burner in accordance with
the details on page 12
Troubleshooting
Diagnosis
(cont.)
5692 488 GB