Heatiator HEIR36T, HEIR42H Troubleshooting continued, Symptom, Possible Cause, Corrective Action

Troubleshooting (continued)

Symptom	Possible Cause	Corrective Action
	A. A shorted or loose connection in flame	Verify all connections to wiring diagram in manual. Verify
4. Pilot lights but contin-	sensing rod.	connections underneath pilot assembly are tight. Verify
ues to spark, and main		flame sense or igniter wires are not grounding out to metal
burner will not ignite.		chassis, pilot burner, pilot enclosure or screen if present, or
(If the pilot continues		any other metal object.
to spark after the
	B. Poor flame rectification or contaminated	With fixed glass assembly in place, verify that flame is en-
pilot flame has been lit,
	flame sensing rod.	gulfing flame sensing rod on left side of pilot hood. Flame
flame rectification has
		sensing rod should glow shortly after ignition. With a multi-
not occurred.)
		meter, verify that current in series between module and
		sense lead is at least 0.14 microamps. Verify correct pilot
		orifice is installed and gas inlet is set to pressure specifi-
		cations. 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 ap-
		pliance. Verify that wire harness is firmly connected to the
		module.
	D. Damaged pilot assembly or contami-	Verify that ceramic insulator around the flame sensing rod
	nated flame sensing rod.	is not cracked, damaged, or loose. Verify connection from
		flame sensing rod to white sensor wire. Polish flame sens-
		ing 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.
5. Appliance lights and	A. A shorted or loose connection in flame	Verify all connections to wiring diagram in manual. Verify
runs for a few minutes	sensing rod.	connections underneath pilot assembly are tight. Verify
and then shuts down		flame sense or igniter wires are not grounding out to metal
and/or appliance cycles		chassis, pilot burner, pilot enclosure or screen if present, or
on and off.		any other metal object.
	B. Poor flame rectification or contaminated	With fixed glass assembly in place, verify that flame is en-
	flame sensing rod.	gulfing flame 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
		orifice is installed and gas inlet is set to pressure specifi-
		cations. Polish flame sensing rod with fine steel wool to
		remove any contaminants that may have accumulated on
		flame sensing rod.
	C. Logs are set up incorrectly.	Remove and reinstall logs per the log placement
		instructions.
	D. Damaged pilot assembly or contami-	Verify that ceramic insulator around the flame sensing rod
	nated flame sensing rod.	is not cracked, damaged, or loose. Verify connection from
		flame sensing rod to white sensor wire. Polish flame sens-
		ing 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.

64 Heatilator • HEIR36, HEIR42, HEIR50 • 2285-900 Rev. D • 8/12