Beretta 20141085, Installation Manual, Page: 80 / 112

80
3.13 Troubleshooting
FAULT CAUSE SOLUTION
There is a smell of gas Gas supply circuit
- Check the seal of the gaskets and the clo-
sure of the pressure tapping points
Odour of unburnt gas Flue gas circuit
- Check the gasket seals
- Make sure there are no obstructions
- Check the combustion quality
Irregular combustion
Burner gas pressure - Check the setting
Diaphragm installed - Check the diameter
Clean the burner and exchanger - Check the conditions
Exchanger passages obstructed - Check passage cleaning
Faulty fan - Check operation
Ignition delays with pulsations to the
burner
Burner gas pressure - Check the setting
Ignition electrode - Check the positioning and conditions
The modular system becomes dirty very
quickly
Combustion - Check the combustion controls
The burner does not start upon consent
of the modular system control
Gas valve
- Check for the presence of 230Vac voltage
on the gas valve terminals, check wiring
and connections
The modular system does not start
No electric power supply (no message on
the display)
- Check the electric connections
- Check the condition of the fuse
The modular system does not arrive at
temperature
Boiler dirty - Clean the combustion chamber
Burner capacity insufficient - Check and adjust the burner
Modular system adjustment
- Check correct functioning
- Check the temperature setting
The generator triggers a thermal safety
block
No water
- Check correct functioning
- Check the temperature setting
- Check the electrical wiring
- Check the position of the sensor bulbs
Modular system adjustment
- Check the bleed valve
- Check the heating circuit pressure
The generator is at temperature but the
heating system is cold
Presence of air in the system - Bleed the system
Pump malfunctioning
- Check/unseize the pump
- Replace the circulator
- Check the electrical connection of the cir-
culator
The circulator does not start
Pump malfunctioning
- Check/unseize the pump
- Replace the circulator
- Check the electrical connection of the cir-
culator
Frequent tripping of the system safety
valve
System safety valve - Check calibration or efficiency
Incorrect circuit pressure
- Check the circuit pressure
- Check pressure reducer functioning
CH expansion vessel
- Check the efficiency of the expansion ves-
sel