Adams Condensing Oil-Fired Furnace Furnace User Manual


 
Table 1
System and General Troubleshooting
PROBLEM
POSSIBLE CAUSE
REMEDY
Electrodes
out
of
adjustment
or defective.
Check
etectrode
settings.
Check
electrodes for dirt build-up or cracks
in
porcelain.
Poor
transformer
high
voltage
connections
or
defective
transformer.
Check
contacts
between
the igniter
and
electrodes.
If
OK,
replace
the
Igniter.
Oilbumer
sputtering
at
nozzle
Fuel
oil
filter
cloaaed.
Replace
fuel
oil
storage
tank filter
and/or
fuel
oil
in-line filter.
Defective
011
pump.
Check
burner
motor/fuel
oil
pump
coupling.
Check
oil
pump
pressure.
Replace
fuel
oil
pump
if
necessary.
Fuel
oil
line partially
clogged
or contains
air.
Bleed air from
oil
line.
If
Dl'obIem persists, replace oliline.
System
temperature
rise
too
high.
"Refer
to
start up
procedure
for
correct
temperature
rise.
Check
for
clogged
air filters.
Check
blower
fan
for
excess
dirt build-up or
debris.
Speed
up
blower
fan
if
necessary.
Poor
"fan off'
delay
timing
selection,
(fan
stoes
too
soon)
Fan
controi
timer.
Check
"fan
off'
delay
timing setting for a
delay
off
between
390
and
600
seconds.
Check stack
temperature.
Fuel
011
leak.
Check
fuel
011
line for leaks.
Repair
or
replace
if
necessary.
Stack
temperature
too
high.
Check
stack
temperature.
Stack
temperatures
will
normally
range
from
20-42 degrees
above
ambient.
Thermostat
Improperly
adjusted or
in
poor
location.
Check thermostat
heat
anticipator setting
against
measured
amperage
draw.
Increase
heat
anticipator setting
if
necessary.
If
the
thermostat is
being
influenced
by
drafts,
sunlight duct
work
etc.
relocate
to
more
suitable
location.
More than
(0)
smoke
Insufficient
combustion
air
at
oil
burner Adjust
oil
burner
combustion
air
to
gain
the highest
C02
or
lowest
practical
02
content
In
the flue gas
(see
Burner
Set
Up).
Heat
exchanaer
oartiallv
blocked
Check
for
soot
build
UP
In
turbulators of
secondary
heat
exchanaer
Soot build up on
the blast tube
(end
coning).
Poor
alignment
of between
oil
burner
blast
tube
and
fire
pot.
Check
alignment.
Blast
tube
should
be
centered
with fire
pot
burner
opening.
Oil
burner
head
should
be
%
Inch
back
from
the
inside surface of the fire
pot.
Flame
impingement
caused
by
incorrect
nozzle
angle.
Check
noZ'ZIe
size
and
anale.
Check
distance from
head
to
inside surface of the fire pet.
Defective
fire
DOt.
Check
fire
DOt.
Reoair
or
reolace.
Airflow
blocked
or dirty air filter.
Clean
or
replace
air filter.
Thermostat
adjustments or location.
Check
thermostat
heat
anticipator setting
against
measured
amperage
draw.
Increase
heat
anticipator setting
if
necessary.
If
the
thermostat
is
being
influenced
by
drafts,
sunlight, duct
work,
etc.,
relocate
to
more
suitable
location.
Furnace will
not
Insufficient
airflow.
Check
all
dampers.
Open
closed
dampers
including registers
in
unused
rooms.
Check
system
temperature
rise.
If
temperature
rise is
too
high,
speed
up
blower
fan.
wannhometo
desired
temperature.
Defective
high
limit
control.
Test
high
limit function
of
all
limit
switches.
Use
a duct
thermometer
to
assess
accuracy
of limit control.
Check
for obstructions
to
airflow
around
limit switch
bi-metal
elements.
Replace
control if
necessary.
NOTE:
A.
high
limit Is
auto-reset.
B.
Auxiliary
limit is
manual
re-6et.
Under-sized
nozzle.
Check
nozzle.
If
problem
is
not
caused
by
air
flow
problems,
use larger nozzle, If
permitted
by
rating
Dlate.
Blower
fan
motor
stopping intermittently
on
overload
Check
blower
fan
motor
amperage
draw.
Check
motor
ventilation
ports,
clean
if
necessary.
Reolace
motor
if
necessary.
Burner
motor
stopping
intermittently
on
overload.
Check
burner
motor.
Replace
if
necessary
21