Form I-RA/D 140/235 (Version A), Page 42
Troubleshooting Continued
Check
for line voltage
across Terminals 8 and
11. Is voltage
read?
Are electrodes
and insulators
OK?
Check
for line voltage
across Terminals 12
and 11. Is voltage
read?
Is
pressure of
compressed air as
required?
Check
for line voltage
across Terminals 12
and 11. Is voltage
read?
Are
there leaks in
the air connections or
lines?
Replace
ignition
controller.
Is ignition
transformer
producing
spark?
Replace
electrode
assembly.
Is electrode
position correct?
Adjust
electrodes.
Replace
ignition
transformer.
Remove air
filter and operate
the burner motor.
Install new
air filter.
Replace air pressure
switch located in
the main
junction box.
Replace air
tubing and tighten
connections.
Rebuild
compressor.
NO
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Chart No. 3 - Thermostat is calling for heat. Burner motor runs for
about 30-45 seconds. System does not attempt to ignite.
Transformer and Electrode Checks:
Measure voltage between transformer/primary
lead and neutral connection. Check transformer,
insulators, and electrodes.
The secondary terminals of a good transformer
deliver 5000 volts arc to ground, for a total of
10,000 volts between terminals. Measure this
with a transformer tester or use a well insulated
screwdriver to draw an arc across the two springs.
This should be at least 3/4” in length.
Check each secondary output terminal by draw-
ing a strong arc between the spring and base. If
the arc is erratic, weak, or unbalanced between
the two terminals, replace the transformer.
Replace electrodes when the tips become worn
or eroded.
First,
check combustion chamber for excess
oil.
NOTE:
After ignition control is reset, you will
have 30 SECONDS o perform the tests shown
below before the controller locks out.
Reset ignition control:
Press the RED BUT-
TON, hold for three seconds, and release.
DO NOT RESET MORE THAN ONE TIME.
Replace any insulators that are question-
able.
Transformer failures and ignition problem
can be caused by the following:
• Excessive gap on the ignition elec-
trodes. Gap should be 3/32”.
• High ambient temperatures
• High humidity
• Carbon residue on the porcelain
bushings
• Low input line voltage
• Arcing between the ignition elec-
trodes and the transformer springs.
They must have good contact.
• Carbon residue, moisture, crazing
or pin holes on the insulators
• Improper positioning of nozzle in re-
lation to the radius of the end cone
• Carbon residue on electrode parts
