Wayne EH - Page 9

9
PROBLEM
POSSIBLE CAUSE
SOLUTION
BURNER SMOKES
(continued)
Heavy accumulation of soot on heat
exchanger and burner assembly
Remove burner assembly from heat exchanger. Clean
thoroughly.
Faulty burner nozzle spray pattern
Replace. See page 22 for instructions.
Misaligned or damaged electrode
Realign electrodes according to Figure 14 or Figure 15 on
pages 26-27, and the oil gun depth according to Figure 16 or
Figure 17 on pages 27-28.
Obstruction in smoke stack
Check for blockage or other foreign objects.
BURNER RUNS
CONTINOUSLY WITHOUT
SATISFYING CALL FOR
HEAT
Improper fuel or water in fuel
Drain fuel tank and fill with proper fuel.
Reduced fuel pressure
Check fuel pump pressure. Check that fuel filter isn’t partially
clogged, replace as necessary. Increase fuel pressure to
manufacturer's specifications. See Figure 25 on page 36 for
pump features. Replace pump if needed.
Soot build-up on heat exchanger.
Clean heat exchanger with soot remover.
Improper burner nozzle installed, nozzle
size too small.
Contact appliance manufacturer for proper nozzle size, and
replace. See page 22 for instructions.
BURNER RUNS BUT
APPLIANCE IS
OVERHEATING
Fuel pump pressure too high
Readjust fuel pressure to appliance manufacturer's specs.
See Figure 25 on page 36 for pump features.
Oil primary control keeps energizing
burner past “call for heat”. (Applicable
only if burner comes with oil primary
control).
Identify control model. Replace Control, and wire accordingly
to Figure 3 or Figure 4 on page 16.
Faulty fuel pump shut-off valve
Replace fuel pump shut-off valve.
Defective high limit switch or
Thermostat
Replace.
Incorrect fuel nozzle size, nozzle size
too big
Contact appliance manufacturer for proper nozzle size, and
replace. See page 22 for instructions.
BURNER MOTOR WILL
NOT RUN
Overload protector activated
Wait 20 minutes for motor to cool down, will restart
automatically.
Faulty oil primary control. (Applicable
only if burner comes with oil primary
control).
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.
Fuel pump seized
Replace fuel pump. See Figure 1 on page 13 for replacement
parts
Burner fan loose or misaligned
Identify fan part number by measuring O.D of fan then
reference Table 1 on page 14 and position the fan spacing
according to Figure 26 on page 36 and tighten set screw.
Defective control switch
Replace switch.
Loose wire
Check and replace or tighten wiring.
Defective burner motor
Replace motor.
BURNER STAYS ON
WHEN NO CALL FOR
HEAT
Faulty oil primary control. (Applicable
only if burner comes with ignition
control).
Observe burner sequence of operations. Replace control if
necessary
Thermostat defective
Check for proper operation, replace if necessary.
Fuel solenoid defective
Replace fuel solenoid.