54
3 16 Troubleshooting
FAULT
CAUSE
SOLUTION
There is a smell of gas
Gas supply circuit.
- Check the seal of the gaskets and
the closure 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 temperature 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 temperature setting
Ignition electrode
- Check the positioning and conditions
The modular system becomes dirty
very quickly
Combustion
- Check the flame colour
- Check the combustion controls
The burner does not start upon con-
sent 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 mes-
sage 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 circulator