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FAULT-FINDING CHART
FAULT CAUSE REMEDY
1 THE BURNER DOES NOT
START.
A. No electricity.
B. Gas fails to reach the burner.
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.
2 THE BURNER STARTS, THERE IS
NO FLAME FORMATION, THEN IT
LOCKS OUT.
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. Check valves operation.
B. Check ignition transformer ope-
ration, check the electrode tips
position.
C. Check the calibration and the ope-
ration of the air pressure switch.
3 THE BURNER STARTS, THERE
IS FLAME FORMATION, THEN IT
LOCKS OUT.
A. The control electrode either fails to
detect the presence of the fl ame or
it does so inadequately.
A. Check the control electrode posi-
tion.
Check ionization current level.
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