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Heat & Glo • SL-550 / 750 / 950TV-D • 2053-985 Rev. J • 4/0738
Intellifi re Ignition System - (continued)
Symptom Possible Causes Corrective Actions
3. ...continued d. Damaged pilot
assembly or dirty
sensor rod.
Verify that ceramic insulator around the sensor rod is not cracked, dam-
aged, or loose. Verify connection from sensor rod to white sensor wire.
Clean sensor rod with emery cloth to remove any contaminants that may
have accumulated on sensor rod. Verify continuity with a multimeter with
ohms set at lowest range.
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 po-
sition. 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.
4. Pilot sparks, but
Pilot will not light.
a. Correct gas supply. Verify that incoming gas line ball valve is “open”. Verify that inlet pressure
reading is within acceptable limits, inlet pressure must not exceed 14 in.
W.C.
b. Ignitor gap is too
large.
Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in.
c. Module is not
grounded.
Verify module is securely grounded to metal chassis of appliance.
d. Module voltage
output / Valve/Pi-
lot solenoid ohms
readings.
Verify battery voltage is at least 2.7 volts. Replace batteries if voltage is
below 2.7.