Ariston M1 10L FF Service Manual page 51

caused by too small external gas pipe or
elbows
06 Gas pressure is too small
07 Unstable gas pressure
Flame-out phenomenon
08
excessive gas pressure
Solenoid valve of gas valve cannot be
09
turned on due to excessive pressure
10 Non-conforming air source
11 Bad and impure gas quality
Air mixed into fuel gas pipe (new residence
12
housing/recently move in)
Little air is needed for combustion: improper
13 installation ("E2"
displayed)
Speed of air required for combustion is too
14 high to result in flame-out phenomenon:
rotary speed of fan is too high
Too much air is needed for combustion: air
15
intake of fan buffer is too large
16 Fault of external water pipe
17 Improper operation of mixing water valve
Blocks due to carbon deposit on cooling fin
18
of heat exchanger
Blocks due to fusing of cooling fin of heat
19
exchanger
20 Flue block ("E1" or "E2" displayed)
21 Flame rows on igniter are blocked
22 Blocked nozzle
23 Weak electric spark caused by undersized
or oversized distance between ignition
24 Air leakage between ignition probe and
igniter
Bad contact of solenoid or proportional
25
valve; reversed wiring of proportional valve
Solenoid valve or proportional valve is
26
damaged
27 Fault of sensing probe: burnt out
Technical Manual for DGI
caused
instead of
- 51 -
Explain, coordinate with
relevant authorities or
adjust mixing ratio of fuel
gas and air
by
Change another air source
Explain, adjust mixing ratio
of fuel gas and air
Evacuate air and then carry
out commissioning
"E1" is Re-installation
Adjust parameters of main
control board or limit air
volume
Adjust size of air intake
Improve external water pipe
Give directives
Clean or replace
Replace
Clean up or replace flue
Clean or replace
Clean or replace
Adjust
Adjust
Adjust
Replace
Replace