42
TECHNICAL ASSISTANCE SERVICE
Air in the circuit
The boiler has reached the
set temperature but the
radiators are still cold
Bleed the circuit
Pump malfunctioning
Check/unseize the pump
Problem with minimum temp.
thermostat (if present)
Check the temperature
setting
Fumes escaping into the air
There is a smell of fumes
Clean the boiler body
Clean the flue gas pipes
Check that the boiler, flue gas pipes
and stack are all properly sealed
Check the door seal
Circuit pressure too high
The safety valve
keeps opening
Check the circuit pressure
Check pressure reducer functioning
Check pressure reducer setting
Problem with heating
system expansion vessel
Check the efficiency of the
expansion vessel
FAULT
CAUSE
CORRECTIVE ACTION
