Troubleshooting - Riello Condexa PRO Series Installation, Technical And Maintenance Manual

COMMISSIONING AND MAINTENANCE

3.10 Troubleshooting

FAULT
There is a smell of gas
Odour of unburnt gas
Irregular combustion
Ignition delays with pulsations to the
burner
The modular system becomes dirty very
quickly
The burner does not start upon consent
of the modular system control
The modular system does not start
The modular system does not arrive at
temperature
The generator triggers a thermal safety
block
The generator is at temperature but the
heating system is cold
The circulator does not start
Frequent tripping of the system safety
valve
Frequent tripping of the system safety
valve
Frequent tripping of the system safety
valve
CAUSE
Gas supply circuit
Flue gas circuit
Burner gas pressure
Diaphragm installed
Clean the burner and exchanger
Exchanger passages obstructed
Faulty fan
Burner gas pressure
Ignition electrode
Combustion
Gas valve
No electric power supply (no message on
the display)
Boiler dirty
Burner capacity insufficient
Modular system adjustment
No water
Modular system adjustment
Presence of air in the system
Pump malfunctioning
Pump malfunctioning
System safety valve
Incorrect circuit pressure
CH expansion vessel
68
SOLUTION
− Check the seal of the gaskets and the
closure of the pressure tapping points
− Check the gasket seals
− Make sure there are no obstructions
− Check the combustion quality
− Check the setting
− Check the diameter
− Check the conditions
− Check passage cleaning
− Check operation
− Check the setting
− Check the positioning and conditions
− Check the combustion controls
− Check for the presence of 230Vac volt-
age on the gas valve terminals, check
wiring and connections
− Check the electric connections
− Check the condition of the fuse
− Clean the combustion chamber
− Check and adjust the burner
− Check correct functioning
− Check the temperature setting
− Check correct functioning
− Check the temperature setting
− Check the electrical wiring
− Check the position of the sensor bulbs
− Check the bleed valve
− Check the heating circuit pressure
− Bleed the system
− Check/unseize the pump
− Replace the circulator
− Check the electrical connection of the
circulator
− Check/unseize the pump
− Replace the circulator
− Check the electrical connection of the
circulator
− Check calibration or efficiency
− Check the circuit pressure
− Check pressure reducer functioning
− Check the efficiency of the expansion
vessel