Desa 28BN - Manual (Page 8)

107396-01F
For more information, visit www.desatech.com For more information, visit www.desatech.com
8
TROUBLESHOOTING
You may have further questions about this heater. If so, contact DESA
Heating Products’ Technical Service Department at 1-866-672-6040
or visit our web site at
www.desatech.com.
Burner fails to light
Burner lights but goes out
when automatic control
valve button is released
Maximum burn rate is low
SYMPTOM POSSIBLE CAUSE REMEDY
1. Open propane/LP supply valve slowly
2. Clean burner/replace orifice elbow/hose and
regulator assembly
3. Verify ignitor electrode gap is .20". Check wire
lead for damage. Replace piezo ignitor and/or
ignitor electrode as necessary
1. Relight, hold automatic control valve button in
30 seconds
2. Check propane/LP cylinder 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/LP gas supplier
3. Clean burner/replace orifice elbow/hose and
regulator assembly
1. Propane/LP supply valve closed on
propane/LP cylinder
2. Blockage in burner/orifice elbow/hose and
regulator 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. Restriction in burner/orifice elbow/hose and
regulator assembly
WARNING: Never attempt to service heater while
it is connected to propane/LP supply, operating, or
hot. Severe burns can occur.
TROUBLESHOOTING
TECHNICAL SERVICE
TECHNICAL SERVICE
You may have further questions about installation, operation, or
troubleshooting. If so, contact DESA Heating Products’ 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 Products’ technical service web
site at
www.desatech.com .