Eclipse TA Series Installation Manual page 28

PROBLEM
Start-up sequence runs but
burner does not light.
(continued)
The low fire flame is weak or
unstable.
The burner goes out when it
cycles to high fire.
The burner is erratic and does
not respond to adjustment.
The burner is unstable or
produces soot or smoke.
The burner cannot achieve full
capacity.

POSSIBLE CAUSE
No flame signal:
• Broken flamerod
• Dirty UV scanner lens
No flame signal:
• Flamerod grounding out
Too much gas:
•
Wrong or missing burner fuel
orifice.
•
Not enough gas flowing to the
burner.
•
Not enough air.
•
Too much gas to the burner.
•
Loading line to the ratio
regulator (if installed) is leaking.
Internal damage to the burner:
•
Some parts inside the burner
are loose, dirty, or burned out.
•
The air/gas ratio is out of
adjustment.
•
Air filter is blocked. (When
equipped with Ratio Regulator)
•
Gas pressure going into the
burner is too low.
•
Combustion chamber
pressure is too high.
Eclipse ThermAir T/A Series v1.10, Installation Guide No. 114, 4/7/06
SOLUTION
Inspect and clean sensor
Replace if necessary
Verify that the flamerod is
installed correctly and is the
correct length.
Check ThermAir Data Sheets,
Series 114 for fuel orifice and
the given fuel.
Adjust the gas control valve to
increase the gas flow.
Check for proper blower
rotation.
Check air filter for blockage.
Verify gas orifice size for your
fuel (ref. Data Sheets 114).
Verify chamber pressure for
proper air flow effect. Check the
start-up settings.
Measure the gas pressures and
adjust them where necessary.
Check for valve train pressure
loss.
Repair the leak in the loading
line.
Contact your Eclipse
representative or Eclipse
Combustion for further
information.
Measure all the gas pressures
and air pressures. Compare
these pressures to the
documented initial start-up
settings and adjust them where
necessary.
Clean or replace the air filter.
Adjust the gas pressure.
Derate burner for positive
pressure installations.