Filter
Top Products
67Heatilator • Novus NNXT • 4055-879 • Rev. o • 2/12
Intellifi re Plus Intermittent Pilot Ignition System - (continued)
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
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 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 rectifi cation or contami-
nated 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. With a multi-meter, verify that
current in series between module and sense lead is at least 0.14
microamps. Verify correct pilot orifi ce is installed and gas inlet is set
to pressure specifi 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.