Desa CB36N, CB36P operation manual Observed Problem Possible Cause Remedy

Troubleshooting

Continued

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY
Electronic Ignition Models	1. No gas supply, or shutoff		1.	Check to see if you have gas
Only Ignitor will not spark or		valve is OFF		supply and that equipment
pilot will not light				shutoff valve is opened
	2.	Air in gas line	2.	Repeat lighting procedure
				several times to purge all air
				out of lines. If after repeated
				attempts appliance does
				not light, call for qualified
				service and repair
	3.	Construction debris clog-	3.	Remove debris and dirt, and
		ging pilot orifice		inspect and clean any other
				possible obstructions
	4.	Low gas pressure	4.	Contact your gas supplier
				to check pressure
	5.	Kinked pilot line	5.	Have a qualified technician
				replace pilot line
	6.	Control valve is not open-	6.	Replace control valve (Re-
		ing		fer to Replacement Parts,
				page 31)
	7.	No power to unit or the	7.	Check that main power is
		ignition module		on and that wire connec-
				tions are made correctly
				to the ignition model (see
				Wiring Diagrams, page 13).

Check for 24 VAC at the secondary side of the trans- former. If 24 VAC is present, and the module does not operate, have the module replaced otherwise have the transformer replaced

Electronic Ignition Models 1.	Loose wiring on ignitor wire
Only Pilot will not stay lit	to ignition module and/
	or poor ground to ignition
	module
2.	Pilot flame too low to
	sense

1.Check wiring connection. Refer to wiring diagram (see Wiring Diagrams, page 13) and/or check ground wire to ignition module

2.Clean and adjust pilot burner and check gas supply and inlet pressure to unit. Note:

Have a qualified technician replace pilot assembly if broken or corroded

Electronic Ignition Models	1.	Pilot flame may be too low	1.	Clean and adjust pilot flame
Only Frequent outage of main		to sense flame causing		for maximum flame across
burner and pilot after complete		ignition module to shut		sensor rod
ignition sequence		down
	2.	Improper or restricted	2.	Locate and correct all vent
		venting		conditions (see Checking for
				Proper Venting, page 10)

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