Fault-Finding Chart - Joannes JM 3 Notice D'installation Et D'entretien

FAULT-FINDING CHART

FAULT
1 THE BURNER DOES NOT
START.
2 THE BURNER STARTS, THERE
IS NO FLAME FORMATION,
THEN IT LOCKS OUT.
3 THE BURNER STARTS, THERE
IS FLAME FORMATION, THEN
IT LOCKS OUT.
CAUSE
A. No electricity.
B. Gas fails to reach the burner.
A. Gas valves do not open.
B. There is no spark between the
electrodes tips.
C. Air pressure switch does not
give its enabling signal.
A. The control electrode either
fails to detect the presence of
the flame or it does so
inadequately.
REMEDY
A. Check the main fuses.
Check the control box fuse.
Check thermostats line and gas
pressure switch.
B. Check that the interception
devices positioned along the
feed pipe open properly.
A. Check valves operation.
B. Check ignition transformer
operation, check the electrode
tips position.
C. Check the calibration and the
operation of the air pressure
switch.
A. Check the control electrode
position.
Check ionization current level.
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