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Heat & Glo • Soho24B • 2137-900 Rev. P • 8/12
Sympton Possible Cause Corrective Action
1. The ignitor/module
makes noise, but no
spark.
a. Incorrect wiring. Verify “S” wire (white) for sensor and “I” wire (orange) for ignitor are connected to
correct terminals on module and pilot assembly. Reversed wires at the module may
cause system to make sparking noise, but spark may not be present at pilot hood.
b. Loose connections
or electrical shorts in
the wiring.
Verify no loose connections or electrical shorts in wiring from module to pilot assem-
bly. Rod closest to pilot hood should be ignitor. Verify connections underneath pilot
assembly are tight; also verify connections are not grounding out to metal chassis,
pilot burner, pilot enclosure, mesh screen if present, or any other metal object.
c. Ignitor gap is too
large.
Verify gap of igniter to pilot hood. The gap should be approximately .17 inch or 1/8
inch.
d. Faulty module. Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor wire
“I” from module. Place ON/OFF Rocker switch or wall switch in ON position. Hold
ground wire about 3/16 inch away from “I” terminal on module. If there is no spark
at “I” terminal module must be replaced. If there is a spark at “I” terminal, module
is fi ne. Inspect pilot assembly for shorted sparker wire or cracked insulator around
electrode.
2. Pilot won’t light,
there is no noise or
spark.
a. Transformer
installed correctly.
Verify that transformer is installed and plugged into module. Check voltage of trans-
former under load at spade connection on module with ON/OFF switch in ON posi-
tion. Acceptable readings of a good transformer are between 3.2 and 2.8 volts AC.
b. A shorted or loose
connection in wiring
confi guration or wiring
harness.
Remove and reinstall the wiring harness that plugs into module. Verify there is a
tight fi t. Verify pilot assembly wiring to module. Remove and verify continuity of each
wire in wiring harness.
c. Improper wall switch
wiring.
Verify that 110/VAC power is “ON” to junction box.
d. Module not
grounded.
Verify black ground wire from module wire harness is grounded to metal chassis of
appliance.
e. Faulty module. Turn ON/OFF rocker switch or wall switch to OFF position. Remove ignitor wire
“I” from module. Place ON/OFF Rocker switch or wall switch in ON position. Hold
ground wire about 3/16 inch away from “I” terminal on module. If there is no spark
at “I” terminal module must be replaced. If there is a spark at “I” terminal, module
is fi ne. Inspect pilot assembly for shorted sparker wire or cracked insulator around
electrode.
3. Pilot lights but
continues to spark,
and main burner will
not ignite. (If the pilot
continues to spark
after the pilot fl ame
has been lit, fl ame
rectifi cation has not
occurred.)
a. A shorted or loose
connection in sensor
rod.
Verify all connections to wiring diagram in manual. Verify connections underneath
pilot assembly are tight. Verify connections are not grounding out to metal chassis,
pilot burner, pilot enclosure or screen if present, or any other metal object.
b. Poor fl ame rectifi -
cation or contaminated
sensor rod.
Verify that fl ame is engulfi ng sensor rod. If the pilot assembly does not have a
ground strap, consider installing one to increase fl ame rectifi cation. Verify correct pi-
lot orifi ce is installed and inlet gas specifi cations. Flame carries rectifi cation current,
not the gas. If fl ame lifts from pilot hood, the circuit is broken. A wrong orifi ce or too
high an inlet pressure can cause pilot fl ame to lift. The sensor rod may be contami-
nated. Polish sensor rod with fi ne steel wool.
c. Module is not
grounded.
Verify that module is securely grounded to metal chassis of appliance. Verify that
wire harness is fi rmly connected to module.
14
14
Troubleshooting
With proper installation, operation, and maintenance your gas appliance will provide years of trouble-free service. If you do
experience a problem, this troubleshooting guide will assist a qualifi ed service person in the diagnosis of a problem and the
corrective action to be taken. This troubleshooting guide can only be used by a qualifi ed service technician.
A. IntelliFire Ignition System