31
EN
8.3
Possible faults and solutions
8.3.1
Burner
m
CAUTION
For any potential anomalies of the burner and flame detector, see the manual for the installed appliance.
8.3.2
System
Type of malfunction or fault
Cause
Solution
Smell of unburnt products
Dispersion of fumes in the
environment
- Check the cleanliness of the burner body
- Check the cleanliness and tightness of the smoke outlet and
generator
- Check the combustion quality
The generator gets dirty quickly
Burner poorly adjusted
- Check the burner adjustment (fume analysis)
Clogged flue pipe
- Clean the fume duct
Burner air path dirty
- Clean the burner air spiral
The generator is at the operating
temperature and the heating system
is cold
Presence of air in the system
- Bleed the system
Faulty pump
- Refer to the pump fault table
Minimum-temperature thermostat
faulty
- Replace the minimum-temperature thermostat
The generator does not reach the
operating temperature
Generator body dirty
- Clean the combustion chamber
Insufficient burner capacity
- Check the condition of the nozzle (wear and cleanliness)
- check the pump pressure
Boiler adjustment thermostat
- Verify the correct operation
- Check the set temperature
The generator locks out
Boiler adjustment thermostat
- Verify the correct operation
- Check the set temperature
- Check the wiring
- Check the position of sensor bulbs
Lack of water
- Check the bleed valve
- Check the pressure of the heating circuit
Frequent intervention of the safety
valve
Heating system pressure
- Check the pressure on the pressure gauge
- Check the pressure reducer
- Check the efficiency of the valve
System expansion vessel
- Check the efficiency and the pre-charge
Smell of unburnt products
Dispersion of fumes in the
environment
- Check the cleanliness of the burner body
- Check the cleanliness and tightness of the smoke outlet and
generator
- Check the combustion quality
The generator gets dirty quickly
Burner poorly adjusted
- Check the burner adjustment (fume analysis)
Clogged flue pipe
- Clean the fume duct
Burner air path dirty
- Clean the burner air spiral
The generator is at the operating
temperature and the heating system
is cold
Presence of air in the system
- Bleed the system
Faulty pump
- Refer to the pump fault table
Minimum-temperature thermostat
faulty
- Replace the minimum-temperature thermostat
The generator does not reach the
operating temperature
Generator body dirty
- Clean the combustion chamber
Insufficient burner capacity
- Insufficient burner capacity
Boiler adjustment thermostat
- Verify the correct operation
- Check the set temperature
The generator locks out
Boiler adjustment thermostat
- Verify the correct operation
- Check the set temperature
- Check the wiring
- Check the position of sensor bulbs
Lack of water
- Check the bleed valve
- Check the pressure of the heating circuit
Frequent intervention of the safety
valve
Heating system pressure
- Check the pressure on the pressure gauge
- Check the pressure reducer
- Check the efficiency of the valve
System expansion vessel
- Check the efficiency and the pre-charge