Heatiator NNXT4236IL NNXT3933I Intellifire Plus Intermittent Pilot Ignition System - continued

Intellifire Plus Intermittent Pilot Ignition System - (continued)

4. Pilot lights but con-	A. A shorted or loose connection in	Verify all connections to wiring diagram in manual. Verify connec-
tinues to spark, and	flame sensing rod.	tions underneath pilot assembly are tight. Verify flame sense or ig-
main burner will not		niter wires are not grounding out to metal chassis, pilot burner, pilot
ignite. (If the pilot		enclosure or screen if present, or any other metal object.
continues to spark
	B. Poor flame rectification or contami-	With fixed glass assembly in place, verify that flame is engulfing
after the pilot flame
	nated flame sensing rod.	flame sensing rod on left side of pilot hood. Flame sensing rod
has been lit, flame
		should glow shortly after ignition. With a multi-meter, verify that
rectification has not
		current in series between module and sense lead is at least 0.14
occurred.)
		microamps. Verify correct pilot orifice is installed and gas inlet is set
		to pressure specifications. Polish flame sensing rod with fine steel
		wool to remove any contaminants that may have accumulated on
		flame sensing rod.
	C. Module is not grounded.	Verify module is securely grounded to metal chassis of appliance.
		Verify that wire harness is firmly connected to the module.
	D. Damaged pilot assembly or con-	Verify that ceramic insulator around the flame sensing rod is not
	taminated flame sensing rod.	cracked, damaged, or loose. Verify connection from flame sensing
		rod to white sensor wire. Polish flame sensing rod with fine steel
		wool to remove any contaminants that may have accumulated on
		flame sensing rod. Verify continuity with a multi-meter with ohms set
		at lowest range. Replace pilot if any damage is detected.

Heatilator • Novus NNXT • 4055-879 • Rev. o • 2/12 67