Desa B50G - Manual (Page 8)

8
102016
Wrong pump pressure
Dirty air output, air intake
and lint filters
Dirty fuel filter
Dirt in nozzle
Dirty or bad photocell lens
Bad flame-out control
Heater ignites, but
flame-out control
shuts off heater after
a short period of
time.
WARNING !
TROUBLE-
SHOOTING
Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
See Pump Pressure
Adjustment, page 10.
See Air Output, Air Intake
and Lint Filters, page 9.
See Fuel Filter, page 10.
See Nozzle, page 11.
Clean or replace photocell
lens.
Replace flame-out control.
OBSERVED FAULT POSSIBLE CAUSE REMEDY
Heater will not
ignite, but motor runs
for a short period of
time. Wrong pump pressure
Carbon deposits on spark
plug and/or improper gap
Dirty fuel filter
Dirt in nozzle
Water in fuel tank
Electronic ignitor not
grounded
Bad electronic ignitor
Motor does not start
when heater is plugged
in, fan rotates slowly
or does not turn. Flame-out control not reset
Solid state relay not
allowed to reset
Binding pump rotor
See Pump Pressure
Adjustment, page 10.
See Spark Plug, pages 10
and 11.
See Fuel Filter, page 10.
See Nozzle, page 11.
Drain and flush fuel
tank with clean kerosene.
See Storing, Transport-
ing, or Shipping, page 7.
Make sure electronic ig-
nitor mounting is tight.
Replace electronic ignitor.
Press flame-out control
reset button.
Wait two minutes
before trying to restart
heater.
If fan is hard to turn, see
Pump Rotor, page 12.
WARNING: High voltage!
!