www.desatech.com
118997-01B
9
OBSERVED PROBLEM
Heater will not ignite, but
motor runs for a short period
of time.
REMEDY
1. A) Add fuel to tank
B) Check fuel tank for bub-
bles of water in bottom. If
found, remove fuel (see
Stor-
ing, Transporting or
Shipping
,
page 6). Clean tank and fuel
filters (see
Fuel Filters
, page
14). Fill with clean fuel
C) Remove wrong fuel (see
Storing, Transporting or
Shipping
, page 6). Clean
tank and fuel filters (see
Fuel Filters
, page 14). Fill
with correct fuel
2. Replace nozzle (see
Noz-
zle
, page 11)
3. Move heater to warmer
place until fuel flows freely
4. Clean fuel filters (see
Fuel
Filters
, page 14)
5. Adjust pump pressure (see
Pump Pressure Adjustment
sections, page 12)
6. Connect spark plug wire to
spark plug
7. A) Adjust electrode gap to
0.075" (see
Spark Plug
,
page 11)
B) Clean fuel from spark
plug with clean, soft cloth
C) Replace plug if heavily
coated with carbon (see
Spark Plug
, page 11)
D) Inspect plug for worn or
eroded electrodes. If found,
replace plug (see
Spark
Plug
, page 11)
8. Check electrical connec-
tions and voltage to so-
lenoid. If good, replace
solenoid valve
9. Replace electronic ignitor
POSSIBLE CAUSE
1. A) Fuel tank empty
B) Water in fuel
C) Wrong fuel
2. Dirt in nozzle
3. Very low temperature may
cause fuel to thicken and
not flow
4. Dirty fuel filters
5. Wrong pump pressure
6. Spark plug wire discon-
nected from plug
7. Spark plug problems due to:
A) Wrong gap
B) Plug wet with fuel
C) Carbon deposits on plug
D) Damaged plug
8. Solenoid valve not opening
9. Damaged electronic ignitor
TROUBLESHOOTING
Continued
WARNING: High Voltage!
