Specifications, Technical service, Troubleshooting – Desa Btu User Manual

Page 6

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113325-01C

6

REMEDY

1. Open propane supply valve

slowly

2. Replace burner/valve as-

sembly

3. Assure ignitor electrode gap

is 0.120" (3.04 mm). Check

wire lead for damage. Replace

piezo ignitor and/or ignitor

electrode as necessary

1. Relight, hold automatic control

valve button in 45 seconds

2. Check propane tank(s) for

proper gas supply

3. Tighten connection or replace

thermocouple

4. Replace automatic control

valve assembly

1. Check gas supply; check

regulator output

2. Consult propane gas supplier

3. Replace burner assembly

POSSIBLE CAUSE

1. Propane supply valve closed

on propane tank(s)

2. Blockage in burner/valve

assembly

3. Piezo ignition system not

sparking

1. Not enough warm-up time

2. Low gas pressure

3. Thermocouple loose or needs

to be replaced

4. Automatic control valve

needs to be replaced

1. Low gas pressure

2. Low fuel supply

3. Plugged gas orifices

SYMPTOM

Burner fails to light

Burner lights but goes out when

automatic control valve button

is released

Maximum burn rate is low

TROUBLESHOOTING

WARNING: Never attempt to service heater while it is connected

to propane supply, operating, or hot. Severe burns can occur.

SPECIFICATIONS

• Rating: High - 25,000 Btu/Hr (26.375 Kj/Hr)

Low - 15,000 Btu/Hr (15.826 Kj/Hr)
• Fuel - Propane Vapor Only
• Fuel Consumption/Hour:

Gallons (Liters) - Min 0.17 (0.64), Max 0.27 (1.02)

Pounds (kg) - Min 0.70 (0.32), Max 1.16 (0.53)
• Supply Pressure (To Regulator):

Maximum - Tank Pressure

Minimum - 275.8 kPa (40 psi)
• Regulator Outlet Pressure: High - 103.4 kPa

(15 psi), Low - 34.4 kPa (5 psi)

TECHNICAL SERVICE

You may have further questions about installation,

operation, or troubleshooting. If so, contact DESA

Heating Productsʼ Technical Service Department

at 1-866-672-6040. When calling please have your

model and serial numbers of your heater ready.
You can also visit DESA Heating Productsʼ techni-

cal services web site at www.desatech.com.

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