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B. Intellifi re Ignition System
Symptom
1. Pilot won't light. The
ignitor/module makes
noise, but no spark.
2. Pilot won't light, there is no
noise or spark.
3. Pilot sparks, but Pilot will
not light.
60
Possible Cause
A. Incorrect wiring.
B. Loose connections or electrical
shorts in the wiring.
C. Ignitor gap is too large.
D. Module.
A. No power or transformer
installed incorrectly.
B. A shorted or loose connection
in wiring confi guration or wiring
harness.
C. Improper wall switch wiring.
D. Module not grounded.
E. Module.
A. Gas supply.
B. Ignitor gap is incorrect.
C. Module is not grounded.
D. Module voltage output / Valve/
Pilot solenoid ohms readings.
Heatilator • Caliber Mesh CD Series-SIT Valve • 4040-849 Rev J • 06/08
Corrective Action
Verify "S" wire (white) for sensor and "I" wire (orange) for ignitor are
connected to correct terminals on module and pilot assembly.
Verify no loose connections or electrical shorts in wiring from
module to pilot assembly. 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.
Verify gap of igniter to right side of pilot hood. The gap should be
approximately .17 inch or 1/8 in. (3 mm).
Turn ON/OFF rocker switch or wall switch to OFF position. Remove
ignitor wire "I" from module. Place a grounded wire about 3/16 in. (5
mm) away from "I" terminal on module. Place ON/OFF rocker switch
or wall switch in ON position. 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. Replace pilot if necessary.
Verify that transformer is installed and plugged into module. Check
voltage of transformer under load at spade connection on module
with ON/OFF switch in ON position. Acceptable readings of a good
transformer are between 3.2 and 2.8 volts AC.
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.
Replace any damaged components.
Verify that 110/VAC power is "ON" to junction box.
Verify black ground wire from module wire harness is grounded to
metal chassis of appliance.
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. 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.
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.
Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in (3
mm).
Verify module is securely grounded to metal chassis of appliance.
Verify battery voltage is at least 2.7 volts. Replace batteries if
voltage is below 2.7.
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