Wayne EHASR-DC Manual page 9

PROBLEM
BURNER SMOKES
(continued)
BURNER RUNS
CONTINOUSLY WITHOUT
SATISFYING CALL FOR
HEAT
BURNER RUNS BUT
EQUIPMENT IS
OVERHEATING
BURNER MOTOR WILL
NOT RUN
POSSIBLE CAUSE
Low fuel pressure
Air bubble in fuel lines
Plugged or dirty burner nozzle
Improper nozzle size installed, nozzle
size too big
Heavy accumulation of soot on heat
exchanger and burner assembly
Faulty oil nozzle spray pattern
Misaligned or damaged electrode
Obstruction in smoke stack
Scratch along surface of nozzle adapter
sealing surface, causing oil to leak and
loss of pressure to oil nozzle
Improper fuel or water in fuel
Reduced fuel pressure
Soot build-up on heat exchanger.
Improper burner nozzle installed, nozzle
size too small.
Fuel pump pressure too high
Oil primary control keeps energizing
burner past "call for heat". (Applicable
only if burner comes with oil primary
control).
Faulty fuel pump shut-off valve
Defective flow switch or
Thermostat
Incorrect fuel nozzle size, nozzle size
too big
Faulty oil primary control. (Applicable
only if burner comes with oil primary
control).
Fuel pump seized
Burner fan loose or misaligned
Defective control switch
Loose wire
Increase fuel pressure to manufacturer's specifications. See
Figure 25 on page 36 for pump features.
Check fuel lines for leaks or air bubbles. Tighten or replace
as needed.
Replace burner nozzle. See page 23 for instructions.
Contact equipment manufacturer for proper nozzle size, and
replace. See page 23 for instructions.
Remove burner assembly from heat exchanger. Clean
thoroughly.
Replace. See page 23 for instructions.
Realign electrodes according to Figure 15 or Figure 16 on
page 28, and the oil gun depth according to Figure 17 or
Figure 18 on pages 29.
Check for blockage or other foreign objects.
See Table 2 on page 15 for replacement part number and
replace.
Drain fuel tank and fill with proper fuel.
Check fuel pump pressure. Check that fuel filter is not
clogged, replace as necessary. Increase fuel pressure to
manufacturer's specifications. See Figure 25 on page 36 for
pump features. Replace pump if needed.
Clean heat exchanger with soot remover.
Contact equipment manufacturer for proper nozzle size, and
replace. See page 23 for instructions.
Readjust fuel pressure to equipment manufacturer's specs.
See Figure 25 on page 36 for pump features.
Identify control model. Replace Control, and wire accordingly
to Figure 3 on page 16.
Replace fuel pump shut-off valve.
Replace.
Contact equipment manufacturer for proper nozzle size, and
replace. See page 23 for instructions.
Observe burner sequence of operations. Check voltage going
to the burner motor if it does not run during the 15 second
trial for ignition, replace control.
Replace fuel pump. See Figure 1 on page 13 for replacement
parts
Identify fan part number by measuring the outside diameter of
the fan. Then reference Table 1 on page 14 and position the
fan spacing according to Figure 26 on page 36 and tighten
set screw.
Replace switch.
Check and replace or tighten wiring.
9
SOLUTION