Troubleshooting | Heatiator CD4842ILR-C, CD4236ILR-C, CD4236IR-C

Troubleshooting (continued)

Symptom	Possible Cause	Corrective Action

4. Pilot lights but contin-	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
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,	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	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.)
not occurred.)		meter, verify that current in series between module and
		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 conti-
		nuity with a multi-meter with ohms set at lowest range. Re-
		place 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 ﬁne.



58	Heatilator • CD4236IR-C, CD4842IR-C • 2207-900 Rev. J • 11/11

Heatiator CD4842ILR-C, CD4236ILR-C, CD4236IR-C, CD4842IR-C owner manual Troubleshooting

Models: CD4842IR-C CD4236ILR-C CD4842ILR-C CD4236IR-C

Troubleshooting (continued)

Symptom

Heatilator • CD4236IR-C, CD4842IR-C • 2207-900 Rev. J • 11/11