Desa (V)KC42PE Cleaning and Maintenance, Troubleshooting, venting system, Observed Problem

Cleaning and

Maintenance

Continued

venting system

Conduct annual inspection of the venting system following these guidelines:

1.Check areas of venting system that are exposed to the weather for corrosion (rust spots or streaks and, in extreme cases, holes). Have these items replaced immediately by a qualified service person.

2.Remove the vent cap and shine a flashlight into the vent. Remove any foreign material.

3.Check for evidence of excessive condensation. Continuous condensation can cause corrosion of caps, pipes and fittings and can be caused by having excessive lateral runs, too many elbows or exterior portions of the system being exposed to cold weather.

4.Inspect joints to verify that no pipe section or fitting has been disturbed and loosened. Check mechanical supports such as wall straps for rigidity.

Troubleshooting

WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean pilot. This can damage pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM	POSSIBLE CAUSE		REMEDY
Ignitor will not spark or pilot	1. No gas supply or shutoff		1.	Check to see if you have gas
will not light		valve is OFF		supply and that equipment
	2.	Air in gas line	2.	shutoff valve is opened
				Repeat lighting procedure
				several times to purge all air
				out of lines. If after repeated
				attempts appliance does not
				light, call for qualified service
	3.	Construction debris clogging	3.	and repair
				Remove debris and dirt, in-
		pilot orifice		spect and clean any other
	4.	Low gas pressure	4.	possible obstructions
				Contact your gas supplier to
	5.	Kinked pilot line	5.	check pressure
				Have a qualified technician
	6.	Control valve is not opening	6.	replace pilot line
				Replace control valve (Refer to
	7.	No power to unit or the igni-	7.	Replacement Parts, page 34)
				Check that main power is
		tion module or power trans-		on and that all wire connec-
		former is bad		tions are made correctly to
				the ignition model (see Wiring
				Diagram, page 27). Check for
				24 VAC at the secondary side
				of the transformer. If 24 VAC
				is present and the module does

not operate, have the module replaced otherwise have the transformer replaced

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