Heat & Glo • Grand-I35-C, Grand-I35-SP, Supreme-I30-C, Supreme-I30-SP • 2206-901 Rev. P • 6/14
42
B. IntelliFire™ Plus Ignition System
Symptom
Possible Cause
Corrective Action
1. Pilot won’t light.
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.
B. Loose connections or electrical
shorts in the wiring.
Verify no loose connections or electrical shorts in wiring from mod-
ule to pilot assembly. Verify connections underneath pilot assembly
are tight; also verify igniter and
fl
ame sense wires 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 right side of pilot hood. The gap should be
approximately .17 in. or 1/8 in. (3 mm).
2. Pilot won’t light,
there is no noise or
spark.
A. No power, transformer installed
incorrectly, or depleted batteries.
Verify that transformer is installed and plugged into module. Check
voltage of transformer at connection to module. Acceptable read-
ings of a good transformer are between 6.4 and 6.6 volts DC. Bat-
tery power supply voltage must be at least 4 volts. If below 4 volts,
replace batteries.
B. A shorted or loose connection in
wiring con
fi
guration or wiring har-
ness.
Remove and reinstall the wiring harness that plugs into module.
Verify there is a tight
fi
t. Verify pilot assembly wiring to module. Re-
move and verify continuity of each wire in wiring harness. Replace
any damaged components.
C. Improper wall switch wiring.
Verify that 120/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.
3. Pilot sparks, but
Pilot will not light.
A. Gas supply.
Verify that incoming gas line ball valve is “open”. Verify that inlet
pressure reading is within acceptable limits.
B. Ignitor gap is too large.
Verify gap of igniter to right side of pilot hood. The gap should be
approximately .17 in. or 1/8 in. (3 mm).
C. Module is not grounded.
Verify module is securely grounded to metal chassis of appliance.
D. Pilot valve solenoid
Verify that 1.5 to 1.8 VDC is supplied to pilot solenoid from module.
If below 1.5 volts, replace module. If 1.5 volts or greater, replace
valve.
4. Pilot lights but con-
tinues to spark, and
main burner will not
ignite. (If the pilot
continues to spark
after the pilot
fl
ame
has been lit,
fl
ame
recti
fi
cation has not
occurred.)
A. A shorted or loose connection in
fl
ame sensing rod.
Verify all connections to wiring diagram in manual. Verify connec-
tions underneath pilot assembly are tight. Verify
fl
ame sense or ig-
niter wires are not grounding out to metal chassis, pilot burner, pilot
enclosure or screen if present, or any other metal object.
B. Poor
fl
ame recti
fi
cation or contami-
nated
fl
ame sensing rod.
With
fi
xed glass assembly in place, verify that
fl
ame is engul
fi
ng
fl
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 ori
fi
ce is installed and gas inlet is set
to pressure speci
fi
cations. Polish
fl
ame sensing rod with
fi
ne steel
wool to remove any contaminants that may have accumulated on
fl
ame sensing rod.
C. Module is not grounded.
Verify module is securely grounded to metal chassis of appliance.
Verify that wire harness is
fi
rmly connected to the module.
D. Damaged pilot assembly or con-
taminated
fl
ame sensing rod.
Verify that ceramic insulator around the
fl
ame sensing rod is not
cracked, damaged, or loose. Verify connection from
fl
ame sensing
rod to white sensor wire. Polish
fl
ame sensing rod with
fi
ne steel
wool to remove any contaminants that may have accumulated on
fl
ame sensing rod. Verify continuity with a multi-meter with ohms set
at lowest range. Replace pilot if any damage is detected.
