Desa SBVBP(C), SBVBN(C) Troubleshooting, Observed Problem, Possible Cause, Remedy

TROUBLESHOOTING

Note: For additional help, visit DESA’s technical service web site at www.desatech.com.

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

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

TROUBLESHOOTING

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

OBSERVED PROBLEM POSSIBLE CAUSE REMEDY

When ignitor button is pressed, there is no spark at pilot

1.Ignitor electrode not connected to igni- tor cable

2.Ignitor cable pinched or wet

3.Piezo ignitor nut is loose

4.Broken ignitor cable

5.Bad piezo ignitor

6.Ignitor electrode broken

7.Ignitor electrode positioned wrong

1.Reconnect ignitor cable

2.Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry

3.Tighten nut holding piezo ignitor. Nut is located behind the mounting bracket.

4.Replace ignitor cable

5.Replace piezo ignitor

6.Replace pilot assembly

7.Replace pilot assembly

When ignitor button is pressed, there is spark at pilot but no ignition

1.Gas supply turned off or equipment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.Depleted gas supply (propane/LP mod- els only)

6.Pilot is clogged

7.Gas regulator setting is not correct

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down control knob. Repeat igniting operation until air is removed

5.Contact local propane/LP gas company

6.Clean pilot (see Cleaning and Mainte- nance, page 22) or replace pilot assembly

7.Replace gas control

Pilot lights but flame goes out when control	1.	Control knob not fully pressed in	1.	Press in control knob fully
knob is released	2.	Control knob not pressed in long enough	2.	After pilot lights, keep control knob
				pressed in 30 seconds
	3.	Equipment shutoff valve not fully open	3.	Fully open equipment shutoff valve
	4.	Control valve damaged	4.	Replace control valve

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106828-01C