170 091 16 08-01
The cable shoes have bad contact
Improve the contact
The ignition cables are damaged
Replace
The ignition transformer is damaged, no voltage
on the secondary side
Replace the transformer
The ignition cable and the ionisation cable have
been transposed.
Change
No flame establishment in spite of a trouble
free start
The gas solenoid valve defective
Replace
The gas solenoid valve does not open in spite of
its obtaining voltage
Replace coil or the whole valve if necessary.
No voltage to the solenoid valve
Check the contact
No electrical connection through the air
pressure switch
Test the adjustment and the function of the air pressure
switch
The starting load is not correctly adjusted
Reduce or increase the gas supply, reduce the quantity
of air
Gas relay defective
Replace
Air pressure switch incorrectly adjusted or defective
Check the adjustment and readjust.
No reponse as the cams of the servomotor are
not correctly adjusted or out of position.
The burner locks out after the safety time has
elapsed in spite of flame establishment
No ionisation current or the UV-cell in wrong position
Adjust the ionisation electrode and the UV-cell, examine
cables and connections.
The supervision part of the gas relay is defective
Replace the relay
REMEDY
CAUSE
2(4)
