www.desatech.com
123221-01A
12
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/LP supply, operating, or hot. Severe burns can occur.
POSSIBLE CAUSE
1. Propane/LP supply valve
closed on propane/LP cyl
-
inder
2. Blockage in burner/orifice
elbow/hose and regulator
assembly
3. Battery not installed, battery
power low or battery not
installed correctly
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
5. Thermocouple gap is too
great
1. Low gas pressure
2. Low fuel supply
3. Restriction in burner/orifice
elbow/hose and regulator
assembly
REMEDY
1. Open propane/LP supply
valve slowly
2. Clean burner/replace orifice
elbow/hose and regulator
assembly
3. Install new alkaline battery
in electronic ignitor. Verify
battery is installed correctly.
See page 10
1. Relight, hold automatic
control valve button in 30
seconds
2. Check propane/LP cylinder
for proper gas supply
3. Tighten connection or re-
place thermocouple
4. Replace automatic control
valve assembly
5. Maintain 0.20" gap between
tip of thermocouple and
emitter material
1. Check gas supply; check
regulator output
2. Consult propane/LP gas
supplier
3. Clean burner/replace orifice
elbow/hose and regulator
assembly
