Heatiator Heatilator Evolution NEVO4236I NEVO3630I - Manual (Page 60)

Heatilator • Evolution • 4065-114 Rev. o • 11/11 60
Intellifi re Ignition System - (continued)
Symptom Possible Cause Corrective Action
4. Pilot sparks, but Pilot will
not light.
Note: Red LED may fl ash
twice on the Module.
A. Gas supply. Verify that incoming gas line shutoff valve is “open”. Verify that inlet
pressure reading is within acceptable limits.
B. Ignitor gap is incorrect. Verify that spark gap from ignitor to pilot hood is .17 in. or 1/8 in (3
mm).
C. Module is not grounded. Verify black ground wire from module wire harness is grounded to
metal chassis of appliance.
D. Module voltage output is low. Verify battery voltage is at least 4 volts. Replace batteries if
voltage is below 4.
5. Pilot lights but continues
to spark, and burner will
not ignite. (If the pilot
continues to spark after
the pilot fl ame has been lit,
fl ame rectifi cation has not
occurred.)
A. A shorted or loose connection
in fl ame sensing rod.
Verify all connections to wiring diagram in manual. Verify
connections underneath pilot assembly are tight. Verify
connections are not grounding out to metal chassis, pilot burner,
pilot enclosure or screen if present, or any other metal object.
B. Poor fl ame rectifi cation or
contaminated fl ame sensing
rod.
With fi xed glass assembly in place, verify that fl ame is engulfi ng
fl ame sensing rod on left side of pilot hood. Flame sensing rod
should glow shortly after ignition. Verify correct pilot orifi ce is
installed and gas inlet is set to pressure specifi cations.
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
contaminated 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 multimeter with ohms
set at lowest range. Replace pilot if any damage is detected.
E. 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. If there is no spark at “I” terminal
module must be replaced. If there is a spark at “I” terminal, module
is fi ne.
6. No pilot, no burner fl ame;
pilot lit but no burner fl ame;
3 Flashes on the Module
Red LED.
A. False fl ame detected. Shut off gas and power immediately and call a technician.
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