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SYMPTOM
Flame
too large
Noisy Flame
Yellow
tip flame
(some
yellow
tipping
on LP
_as is permissible
Floating
Flame
Gas Odor
Delayed
Ignition
Failure
to Ignite
Condensation of
Water Vapor
Burner won't
turn off
Incorrect
Gas Input
Not enough
heat
Too much heat
Burner
won't
turn on
TROUBLE
SHOOTING
CHART
for qualified
serviceman
- MAIN
BURNER
POSSIBLE
CA[
SES
CORRECTIVE
ACTION
i. Defective
operator
section
of'gas
valve,
i. Replace
complete
valve.
2. Burner
orifice
too large.
2. Check with local gas company
for proper
orifice
size and replace.
3. If installed
above 2,000 ft.
3. Refer to orifice chart on Page 9.
1. Noisy pilot.
1. Reduce
pilot gas with adjusting
screw on combination
gas control valve.
2. Burr in orifice
(if it whistles
or resonates).
2. Remove
bun" or replace
orifice
(do not enlarge
orifices)
3. Excessive
gas input.
3. See "Flame
Too Large"
above.
i. Clogged
main burner
ports.
1. Clean
main burner ports.
(Do not enlarge
ports).
2. Clogged
draft hood.
2. Clean
draft hood.
3. Linted
up mixer
opening.
3. Check
for dust or lint at air mixer
opening.
i. Blocked
venting,
i. Clean
flue passageways
to remove
blockage.
i. Gas leak.
i. Shut off gas service immediately.
Check piping.
Call gas company.
See "For Your Safety",
Page
1.
2. Chinmey
or flue obstruction.
2. Clean
flue.
3. Drafts
around
appliance.
3.
Eliminate
drafts.
1. Pilot flame too small.
1. Check pilot orifice.
Increase
pilot gas flow if
necessary
by adjusting
inlet pressure
from gas
source
(meter
if natural
gas or second
stage
regulator
if propane
- maxinmm
7" w.c. for
Natural
and 11" w.c. for propane).
2. Bumer
ports clogged
near pilot.
2. Clean
burner
ports (do not enlarge
ports).
3. Low gas pressure.
3. Check
gas supply inlet pressure.
Check
gas outlet
(manifold)
pressure
for "minimum
step" pressure
dbr "step"
pressure
chart see "Operation").
4. Pilot decreases
in size when main
4. Supply
piping
inadeqnately
sized or incorrect
bumers
come on.
inlet pressure.
5. Drafts
around
appliance.
5.
Eliminate
drafts.
6. Bad venting.
6.
See "Venting".
i. Main gas ofT.
i. Open all manual
gas valves.
2. Defective
gas valve.
2. Replace
gas valve.
I. Improper
venting,
i.
See "Venting".
i. Defective
or sticking
automatic
valve,
i. Replace
valve.
2. Excessive
gas pressure
(The supply gas
2. To correct
this situation
contact
the utility
pressure
must not exceed
1/2 psi or
supplying
the gas.
14" w.c.
i. Gas input not checked.
1. Re-check
gas mput.
2. (:logged
orifice.
2. Check orifice
for clogging.
If clogged,
clean out
the hole carefully
with a smooth
wood
toothpick.
(Do not in any way enlarge
or distort
it).
i. Appliance
undersized,
i. This is especially
true when
a dwelling
or room is
enlarged.
Have the heat loss calculated
and compare
to the appliance
output (approx.
70% of input).
Your gas company
or installer
can supply you with
this inibrmation.
If appliance
is undersized,
replace
with con'ect
size unit.
2. Incorrect
supply
pressure.
2. Check
supply pressure
as outlined
above.
i. Combination
control valve
sticks open.
i. Replace
combination
control
valve.
TROUBLE
SHOOTING
CHART
- PILOT
AND VALVE
i. Gas valve not turned on.
1. Tuna gas valve to "on" position".
2. No voltage
to valve.
3. Defective
thermostat.
4. No 115 Volt Line Voltage.
5. Auxiliary
limit switch
open.
6. Blocked
flue switch
open.
7. Gas valve defective.
2. Check
for 24 Volts to Valve.
3. Check
wall themmstat.
4. Jump tim switch
to check
for voltage
(fan will
conle
on).
5. Push on red buton
to close.
6. Push red button
in to close.
7. Revlace
_as valve
Page 18
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