Wayne EH User Manual page 9

PROBLEM
BURNER SMOKES
(continued)
BURNER RUNS
CONTINOUSLY WITHOUT
SATISFYING CALL FOR
HEAT
BURNER RUNS BUT
APPLIANCE IS
OVERHEATING
BURNER MOTOR WILL
NOT RUN
BURNER STAYS ON
WHEN NO CALL FOR
HEAT
POSSIBLE CAUSE
Heavy accumulation of soot on heat
exchanger and burner assembly
Faulty burner nozzle spray pattern
Misaligned or damaged electrode
Obstruction in smoke stack
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 high limit switch or
Thermostat
Incorrect fuel nozzle size, nozzle size
too big
Overload protector activated
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
Defective burner motor
Faulty oil primary control. (Applicable
only if burner comes with ignition
control).
Thermostat defective
Fuel solenoid defective
Remove burner assembly from heat exchanger. Clean
thoroughly.
Replace. See page 22 for instructions.
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.
Check for blockage or other foreign objects.
Drain fuel tank and fill with proper fuel.
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.
Clean heat exchanger with soot remover.
Contact appliance manufacturer for proper nozzle size, and
replace. See page 22 for instructions.
Readjust fuel pressure to appliance manufacturer's specs.
See Figure 25 on page 36 for pump features.
Identify control model. Replace Control, and wire accordingly
to Figure 3 or Figure 4 on page 16.
Replace fuel pump shut-off valve.
Replace.
Contact appliance manufacturer for proper nozzle size, and
replace. See page 22 for instructions.
Wait 20 minutes for motor to cool down, will restart
automatically.
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 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.
Replace switch.
Check and replace or tighten wiring.
Replace motor.
Observe burner sequence of operations. Replace control if
necessary
Check for proper operation, replace if necessary.
Replace fuel solenoid.
9
SOLUTION