Desa PV35VPA, PL35VPA, PD35VPA Troubleshooting, Specifications, Symptom Possible Cause Remedy

TROUBLESHOOTING

WARNING: Never attempt to service heater while it is connected to propane/LP supply, operating, or hot. Severe burns can occur.

SYMPTOM	POSSIBLE CAUSE		REMEDY
Burner fails to light	1. Propane/LPsupply valve closed		1.	Open propane/LP supply
		on propane/LP cylinder		valve slowly
	2.	Blockage in burner/orifice	2.	Clean burner/replace orifice
		elbow/hose and regulator as-		elbow/hose and regulator as-
		sembly		sembly
	3.	Piezo ignition system not	3.	Verify ignitor electrode gap is
		sparking		.20". Check wire lead for dam-
				age. Replace piezo ignitor and/or
				ignitor electrode as necessary
Burner lights but goes out when	1. Not enough warm-up time		1.	Relight, hold automatic control
automatic control valve button				valve button in 30 seconds
is released	2. Low gas pressure		2.	Check propane/LP cylinder
				for proper gas supply
	3.	Thermocouple loose or needs	3.	Tighten connection or replace
		to be replaced		thermocouple
	4.	Automatic control valve needs	4.	Replace automatic control
		to be replaced		valve assembly
	5.	Thermocouple gap is too	5.	Tip of thermocouple should
		great.		just touch the emitter material.
				Loosen bracket screws to move
				thermocouple closer to burner.
				Be careful not to allow ignitor
				to touch. Maintain 0.20"
Maximum burn rate is low	1. Low gas pressure		1.	Check gas supply; check
				regulator output
	2.	Low fuel supply	2.	Consult propane/LP gas supplier
	3.	Restriction in burner/orifice	3.	Clean burner/replace orifice
		elbow/hose and regulator as-		elbow/hose and regulator as-
		sembly		sembly

Rating	SPECIFICATIONS
High	35,000 Btu/Hr (39.927 Kj/Hr)
Low	22,000 Btu/Hr (23.211 Kj/Hr)
Fuel	Propane Vapor Only
Fuel Consumption
Gallons (Liters)/Hour	Min .24 (.91), Max .38 (1.44)
Pounds (kg)/Hour	Min 1.02 (.46), Max 1.62 (.73)
Supply Pressure (To Regulator)
Maximum	200 psi (1,379 Kpa)
Minimum, for input adjustment	20 psi (137,9 Kpa)
Manifold Pressure psi (Kpa)
High	1.8 psi (12,41 kPa)
Low	1.9 psi (13,10 kPa)
Ignitor Gap	0.120"
Minimum Temperature	-20°F (29°C) Surrounding Air Temperature
Size - L x W x H
Heater	17.5 x 15 x 42 inches (.44 x .38 x 1.06 m)
Carton	22 x 17.5 x 45 inches (.56 x .44 x 1.14 m)
Weight
Heater	3.2 kg (7 lb)
Carton	4.1 kg (9 lb)

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