Fault Table - ACV BG 2000-S Serie Manual De Instalación, Utilización Y Mantenimiento

FAULT-FINDING PROCEDURES

FAULT TABLE

Corrective Measures
Problems
Condensation in chimney:
Smell of flue gas:
Insufficient heating:
Burner switches to safety mode after lighting;
Circulator:
Not enough hot water:
Circulator does not turn:
Burner does not light:
Manual reset safety thermostat has actuated:
Reasons
Chimney cold and/or not lined
Boiler T° set too low
Chimney blocked
Back draught in chimney
Boiler room vents insufficient or nonexistent
Boiler clogged
Burner clogged
Room thermostat T° set too low
Circulator blocked or faulty
Boiler switch in Summer position or faulty
Not enough water in the system
Radiator valves closed
Air in the system not vented properly
Gas pressure insufficient
Gas pipe too small
Boiler thermostat or potentiometer is faulty
Electrical system not earthed (properly)
The system fuses have blown
Air in the system and/or boiler not vented properly
Interval for large drawoff is too short
Drawoff flow rate is too high
Room thermostat not in demand or faulty
Summer/Winter switch faulty
Summer/Winter switch faulty
On/Off switch faulty or not on
NTC probe faulty
95 °C limit thermostat has activated
Manual reset safety thermostat has activated
Electronic unit faulty
Electronic unit fuse blown
Burner fan faulty
Fan "PWM" control no longer working
Lighting electrode faulty or badly adjusted
Ionisation electrode faulty or badly adjusted
Burner connectors not plugged in properly
Gas valve does not open
Relay on electronic unit failing
Boiler thermostat or potentiometer faulty
Air in top of boiler not vented properly
NTC probe not inserted properly in pocket
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