Page 56 from 76 6 720 814 719
SM FP_Australia 2017/04 EN
8.1) Problems without error codes
Combustion noise too high
No
Convert appliance according IM
(check existence of EF codes in
memory)
Gas supply type according
appliance gas type ?
Gas supply pressure (static /
dynamic) according IM ?
Assure gas supply pressure,
testing appliance at
maximum and minimum
In case of need
contact gas supplier
Yes
No
Check exhaustion system for
eventual recirculation of
combustion products (cross
contamination)
Cross contamination
persist / Combustion
not ok
Clearances for air admission
/ flue discharge according IM
/ Sealing between flue pipes
and appliance
Measure CO2 value (at flue
measurement point) in
maximum power
with /
without
front cover
Without Front Cover
CO2 (G20
) ≈ 5.5%
(+/-0.2%)
CO2 (G31) ≈ 6.6%
(+/-0.2%)
Temp gases máx ≈ 170ºC
Temp. gases min ≈ 45ºC
With Front Cover
Máx CO2 = CO2 without front
cover + 0.3 %
Yes
Yes
No
No
Adjust appliance by
confirming ΔP1 / ΔP2
according IM
Note:
check air / gas
measurement
independently to be sure
reading i
s ≠ 0 and then
check ΔP
Problem solved ?
Emissions according
specification ?
End
End
ATTENTION:
CO2 > nominal = flue
recirculation
CO2 increasing > 0.3%
difference from cover Off to
cover On = flue recirculation
ATTENTION:
Adjustments of ΔP are done
without front cover
