Hearth and Home Technologies Heat & Glo Twilight II-B - Manual (Page 32)

Heat & Glo LifeStyle Collection • Twilight-II-B • 2108-900 Rev. G • 8/07 32
Intellifi re Ignition System - (continued)
Symptom Possible Cause Corrective Action
3. Continued d. Damaged pilot as-
sembly or dirty sensor
rod. Verify that ceramic insulator around the sensor rod is not cracked, damaged, 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 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.
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.