Desa Td101a - Manual (Page 6)

www.desatech.com 6 1749-01A
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
. 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
. 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
. Check propane/LP cylinder
for proper gas supply
3. Tighten connection or re-
place thermocouple
4. Replace automatic control
valve assembly
5. Maintain 0.17" gap between
tip of thermocouple and
emitter material
1. Check gas supply; check
regulator output
. Consult propane/LP gas
supplier
3. Clean burner/replace orifice
elbow/hose and regulator
assembly