170 091 16 08-01
The ambient temperature of the gas relay is too high
Heat insulate, max. 60° C.
The ignition spark is too weak
Check the transformer
Bad combustion
Bad draught conditions
Check the chimney
The flue gas temperature is too high
The boiler is overloaded. Reduce the quantity of gas.
The CO
2
-content is too low
Check the boiler with regard to leaks. Choke the draught
if it is too high.
The CO-content is too high
Excess air when using natural gas and gasoil
(propane, butane
Choke the air.
Air shortage
Open the air supply. Check the flue gas damper.
The holes in the gas nozzle are clogged
Clean.
The fresh air intake is too small
Check and enlarge.
The flame is not burning straight because the burner
head is out of position
Check the burner head and readjust.
Condensation in boiler and chimney
The flow gas temperature is too low or the quantity
of gas is not sufficient
Increase the flue gas temperature by increasing the
gas supply. Insulate the chimney
REMEDY
CAUSE
4(4)
