Ariston M1 10L FF Service Manual page 54

37
38
99
01
02
Squeaking 03
04
99
01
Shaking-
02
resonance
03
during running
99
01
02
Instable water
temperature
03
99
DG water
temperature is 01
too high
02
03
04
05
06
07
08
Technical Manual for DGI
Drift of parameters of main control board
Fault of main control board
Other causes
Run out of fuel gas
Output pressure of reducing valve is on low
side
Too large throttle
Non-conforming air source (too much air
and less fuel gas)
Other causes
Irrational ratio of water volume, fuel gas
volume, air volume and flue gas, which may
cause resonance
Irrational parameters of main control board
Insecure installation
Other causes
Unstable air pressure
Unstable water pressure
Insufficient fuel
Gi7S/Fi7)
Other causes
Excessive water intake temperature in
summer, demand of user is lower than the
min. heat load, no firepower segment
Low water pressure
Water pipe blocked
Water valve is not completely open, which
causes low water flow
Excessive air pressure
Water volume detected by sensor is larger
than actual value
Parameters of main control board is on the
high side
gas pressure (type
- 54 -
Adjust
Replace
Other causes
Explain and give directives
Explain and give directives
Adjust
Change another air source
Other causes
Adjust
Replace
Readjust
Other causes
Apply air pressure
stabilizing device
Apply water pressure
stabilizing device
Check air pipe or apply air
pressure booster
Other causes
Explain and give directives
Explain and give directives
Explain and give directives
Explain and give directives
Explain and give directives
Replace
Re-adjust
Adjust