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Heat & Glo • 550TRSI-AUF, 550TRSILP-AUF • 2079-980 Rev. N • 5/12
Troubleshooting (continued)
Symptom Possible Cause Corrective Action
4. Pilot lights but contin-
ues to spark, and main
burner will not ignite.
(If the pilot continues
to spark after the
pilot ame has been lit,
ame rectication has
not occurred.)
A. A shorted or loose connection in ame
sensing rod.
Verify all connections to wiring diagram in manual. Verify
connections underneath pilot assembly are tight. Verify
ame sense or igniter wires are not grounding out to metal
chassis, pilot burner, pilot enclosure or screen if present, or
any other metal object.
B. Poor ame rectication or contaminated
ame sensing rod.
With xed glass assembly in place, verify that ame is en-
gulng ame sensing rod on left side of pilot hood. Flame
sensing rod should glow shortly after ignition. With a multi-
meter, verify that current in series between module and
sense lead is at least 0.14 microamps. Verify correct pilot
orice is installed and gas inlet is set to pressure speci-
cations. Polish ame sensing rod with ne steel wool to
remove any contaminants that may have accumulated on
ame sensing rod.
C. Module is not grounded. Verify module is securely grounded to metal chassis of ap-
pliance. Verify that wire harness is rmly connected to the
module.
D. Damaged pilot assembly or contami-
nated ame sensing rod.
Verify that ceramic insulator around the ame sensing rod
is not cracked, damaged, or loose. Verify connection from
ame sensing rod to white sensor wire. Polish ame sens-
ing rod with ne steel wool to remove any contaminants
that may have accumulated on ame sensing rod. Verify
continuity with a multi-meter with ohms set at lowest range.
Replace pilot if any damage is detected.
5. Carbon Deposition
A. Log Placement Verify placement and assure ame is not excessively
impinging on log.
B. Shutter Setting Check to assure correct shutter setting for your model and
gas type.
C. Gas Type Assure correct fuel matches unit gas model and components.