Service manual

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Troubleshooting
11.Burner Not Burning Properly
Burner Not Burning
Properly
Is there lint/dirt in
burner tube?
Is the gas
pressure too high
or low?
No
Disassemble
burner and
blow out lint/dirt.
Yes
Check serial
plate on back of
tumbler for
correct gas
pressure.
Yes
Is
the airflow
switch not
functioning
properly?
Yes
Replace airflow
switch.
Is there
inadequate
make-up
air?
Yes
Refer to
Installation Manual
for make-up air
requirements.
TMB2189S
No
Yes
Clean off lint.
Is there lint buildup
around gas valve
spud?
No
Does
the tumbler have
incorrect
orifices?
Yes
Tumbler is equipped
for the type of gas
specified on serial
plate. If orifices are
different from that
specified on serial
plate, obtain and
install correct
orifices.
Is the
exhaust duct
restricted or
blocked?
Yes
Disassemble
and clean
exhaust system.
No
No
No